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MK3 > Boat Trailers > Flashcards

Boat Trailers Flashcards

1
Q

List of sequential numbers and letters issued by a manufacturer to track trailer production, options, and modifications. Also used to license a trailer

A

TIN/VIN

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2
Q

TIN/VIN

A

Trailer/vehicle identification number

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3
Q

VIN requirements defined by

A

Code of federal regulations (49 CFR 565)

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4
Q

Consists of a 17-digit combination of numbers and letters

A

VIN

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5
Q

Never use ____ when reassembling a trailer

A

Pneumatic tools

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6
Q

First rule of thumb for trailering

A

Ensure the tow vehicle is capable of handling the weight of the trailer, with boat and equipment, as well as passengers and equipment carried in the vehicle

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7
Q

Hitches are labeled with

A

The proper weight and classifications

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8
Q

Total weight of the trailer plus everything on it

A

Gross trailer weight

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9
Q

Weight forced down on the hitch ball

A

Tongue weight

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10
Q

Maximum tongue weight is usually about ____ of the maximum gross trailer weight

A

10%

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11
Q

CG trailer hitches need to have ____ stamped on them

A

Class V weight carrying (WC)

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12
Q

Class 1 trailer hitch: gross trailer weight up to ___. Tongue weight up to _____

A

2000, 200

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13
Q

Class 2 trailer hitch: gross trailer weight up to ___. Tongue weight up to _____

A

3500, 350

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14
Q

Class 3 trailer hitch: gross trailer weight up to ___. Tongue weight up to _____

A

5000, 500

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15
Q

Class 4 trailer hitch: gross trailer weight up to ___. Tongue weight up to _____

A

12000, 1200

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16
Q

Class 5 trailer hitch: gross trailer weight up to ___. Tongue weight up to _____

A

13000, 1300

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17
Q

Two classification on a hitch identification tag

A

Weight carrying (WC), weight distribution (WD)

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18
Q

Works by forcing down on the entire frame, transferring the weight through the full length of the tow vehicle in order to keep the tow vehicle and trailer as level as possible

A

Trailer hitch system

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19
Q

Attaches to the trailer hitch providing a secure fitting to mount the trailer ball

A

Ball mount

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20
Q

The ball must be ____ inches and have a rating of ______

A

2 5/16 inches, 10000 lbs or greater

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21
Q

The tongue weight should be _____ when the trailer is level

A

800 lbs or less

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22
Q

Usually encompasses the couple, surge brake actuator, safety chains, hydraulic reservoir, emergency breakaway chain, and tongue jack assembly

A

Tongue

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23
Q

Engages the ball and provides a positive mechanical lock between the trailer and the tow vehicle

A

Coupler

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24
Q

Two common type of brake actuators

A

Surge brake actuators

Electro hydraulic actuators

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25
Q

Actuates the breakaway lever

A

Breakaway chain

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26
Q

Hydraulic brake actuators safety chain must be attached to the hitch using

A

1/4 inch shackle and an additional 1/2 inch shackle

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27
Q

Prevents the brakes from activating in surge brake applications, gets an electrical signal from the reverse lights of the tow vehicle

A

Reverse solenoid

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28
Q

Provide trailer retention to the vehicle should the coupler disengage from the ball

A

Two crisscrossed safety chains

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29
Q

Safety chains must be

A

1/2 inch galvanized steel

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30
Q

Safety chains are attached to tow vehicle’s hitch with

A

1/2 inch galvanized screw pin shackles that are rated for two tons

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31
Q

Made to support the load of the boat and trailer while not in tow

A

Tongue jack

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32
Q

The standard jack for the TANB is rated for a maximum static load of ____, with a maximum lift rated at _____

A

8000, 5000

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33
Q

The standard jack for the RB-S is rated for

A

2500 lbs

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34
Q

Winches are rated in

A

Line pull

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35
Q

Line pull is usually measured in

A

Pounds or kilograms

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36
Q

The rated line pull is with

A

The first layer of strap or wire rope on the winch drum

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37
Q

As a guide for each layer of a strap or wire rope on the drum, deduct ___ off the rated line pull

A

10%

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38
Q

Winches operate in three directions

A

Neutral, forward, reverse

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39
Q

TANB: winch rated at ____ equipped with a ____ minimum rated breaking strength of _____

A

3500 lbs, 5/16 inch synthetic rope, 14000 lbs

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40
Q

RB-S: winch rated at ____ first layer, _____ with a full drum and equipped with a strap rated with a maximum safe working load of ____

A

3700 lbs, 1500 lbs, 4000 lbs

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41
Q

Attached and tightened between the pad-eyes found on the boat and the trailer prior to transporting the boat

A

Tie down straps

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42
Q

Tie down straps need to be rated for at least

A

6000 lbs

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43
Q

Key function of a boat’s trailer frame

A

Distribute the weight and load for safe transportation

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44
Q

Coast guard trailers use ____ for the frames, and _____ for the cross members and support structures

A

Aluminum, galvanized steel

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45
Q

Two basic types of support systems on trailers

A

Bunks and rollers

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46
Q

Have long, support bunks, usually made of wood or aluminum, and covered with carpet or plastic to soften the surfaces

A

Bunk systems

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47
Q

Work best on steep ramps where you are able to submerge the trailer deep enough to partially float the boat off and on the trailer

A

Bunk trailers

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48
Q

Transom should be even with

A

The back end of the bunk

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49
Q

Type of suspension in coast guard trailers

A

Torsion axle suspension

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50
Q

This technology produces quicker centering, less lateral sway, and more control

A

Torsion axle suspension

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51
Q

Within the suspension system, self contained lever within the axle tube surrounded by four natural rubber cords encased in the main structural member of the axle beam

A

Torsion arm

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52
Q

Attached to the torsion arm which is fastened to the rubber encased bar

A

Wheel/hub spindle

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53
Q

If torsion axle is damaged

A

Replace it, do not weld it

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54
Q

Where the bearings, hub, and brake caliper are mounted to the axle

A

Spindle

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55
Q

Has a threaded connection that is used to retain the bearings and hub assembly

A

Spindle

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56
Q

If the spindle is damaged, it is recommended

A

The entire axle be replaced

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57
Q

Two types of braking configurations

A

Disc and drum

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58
Q

Actuator supplies hydraulic force through the hydraulic line, through the caliper, to the piston, pushing against the brake pad

A

Disc brake

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59
Q

Disc brakes are separated with ____ which ____

A

A vane or vent

Helps force air through the brakes and cool them

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60
Q

Trailers with a GVW between ____ and drawn at a speed over ____ may have brakes that operate both wheels of the rear axle

A

4500 & 15000 lbs, 30 mph

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61
Q

Trailers with a GVW in excess of ___ must have brakes that operate each wheel

A

15000 lbs

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62
Q

Trailers with a GVW of ____ may use surge or inertia brakes to satisfy the braking requirements

A

15000 lbs or less

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63
Q

Federally mandated safety measure that will stop the trailer if it becomes disconnected from the tow vehicle

A

Breakaway brake

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64
Q

Must be completely independent of the tow vehicles braking system or electrical system

A

Breakaway brake

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65
Q

Can be used in place of semi metallic pads and generate less dust and wear on both the pads and the rotors. Also provide much quieter braking

A

Ceramic compounds and copper fibers

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66
Q

Due to health risks has been replaced with alternative materials such as mineral fibers, cellulose, aramid, PAN, chopped glass, steel, and copper fibers

A

Asbestos

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67
Q

Provide strength and conduct heat away from the rotors but also generate noise and are abrasive enough to increase rotor wear

A

Semi-metallic pads

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68
Q

What bolts must be used for installation of the hitch system

A

Grade 8 bolts

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69
Q

If any element of the hitch system is loose

A

A disabling casualty exists

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70
Q

If the tow vehicle and complete hitch system are rated for less than the maximum weight requirement, a manufacturers stamp must be attached, if not

A

A disabling casualty exists

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71
Q

Those that restrict the operations of the trailer such that it can perform some, but not all missions safely

A

Restrictive discrepancies

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72
Q

What kind of discrepancy. Damage or disfigurement of the wheel rim flange which results in exposure of the tire bead and/or damage or disfigurement which warps the circular shape of the rim

A

Restrictive discrepancy

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73
Q

What kind of discrepancy (RB-S). Tire pressure below 20 psi

A

Restrictive discrepancy

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74
Q

What kind of discrepancy (RB-S). Three or more tires with air pressure below 40 psi

A

Restrictive discrepancy

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75
Q

What kind of discrepancy. Tire tread depth less than 4/32” (1/8”)

A

Restrictive discrepancy

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76
Q

What kind of discrepancy (RB-S). Brake/tail light incandescent bulb extinguished (defender A class)

A

Restrictive discrepancy

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77
Q

What kind of discrepancy (RB-S). Brake/tail light with one or more extinguished LEDs (defender B class)

A

Restrictive discrepancy

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78
Q

What type of discrepancy. Missing lug nut

A

Restrictive discrepancy

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79
Q

What type of discrepancy. Missing or flat, improper size, damaged or worn tires

A

Restrictive discrepancy

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80
Q

What type of discrepancy. Trailer running lights inoperative or wrong characteristic

A

Restrictive discrepancy

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81
Q

What type of discrepancy. Brake actuator or backup solenoid inoperative or no fluid

A

Restrictive discrepancy

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82
Q

What type of discrepancy. Wheel bearings or brakes have excessive noise or play

A

Restrictive discrepancy

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83
Q

What type of discrepancy. Structural cracks

A

Restrictive discrepancy

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84
Q

What type of discrepancy. (RB-S). Missing safety chains or breakaway brake actuator safety chain

A

Restrictive discrepancy

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85
Q

What type of discrepancy. Emergency brake latch fails to operate

A

Restrictive discrepancy

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86
Q

What type of discrepancy. Missing tie down straps

A

Restrictive discrepancy

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87
Q

How many tie down straps required for the RB-S

A

Six not including winch strap

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88
Q

How many tie down straps required for the TANB

A

Two not including winch strap

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89
Q

What kind of discrepancy (TANB). Tire air pressure below 40 psi

A

Restrictive discrepancy

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90
Q

What kind of discrepancy (TANB). Brake/tail light incandescent bulb extinguished

A

Restrictive discrepancy

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91
Q

What kind of discrepancy (TANB). Missing safety wire cables or brake emergency chain

A

Restrictive discrepancy

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92
Q

Those that degrade the effectiveness of the trailer to perform one or more missions

A

Major discrepancies

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93
Q

What kind of discrepancy. Loose, missing, improper hardware

A

Major discrepancy

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94
Q

What type of discrepancy. Brake fluid level low

A

Major discrepancy

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95
Q

What kind of discrepancy. Nonstandard tie down straps

A

Major discrepancy

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96
Q

What type of discrepancy (RB-S). Missing/damaged E/Z jack

A

Major discrepancy

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97
Q

What type of discrepancy. Missing section of DOT reflective tape

A

Major discrepancy

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98
Q

What type of discrepancy (RB-S). Tire air pressure 20 - 39 psi

A

Major discrepancy

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99
Q

What type of discrepancy (RB-S). Tire air pressure above 50 psi

A

Major discrepancy

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100
Q

What type of discrepancy (RB-S). Clearance light extinguished (defender A class)

A

Major discrepancy

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101
Q

What type of discrepancy (RB-S). Clearance light with one or more extinguished LEDs (defender B class)

A

Major discrepancy

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102
Q

What type of discrepancy. Bearing lubricator damaged or missing

A

Major discrepancy

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103
Q

What type of discrepancy. Damage or disfigurement of the wheel rim flange which does not result in exposure of the tire bead

A

Major discrepancy

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104
Q

What type of discrepancy (TANB). Missing/damaged/misaligned bunks

A

Major discrepancy

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105
Q

What type of discrepancy (TANB). Missing/damaged tire change kit

A

Major discrepancy

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106
Q

What type of discrepancy (TANB). Tire air pressure 50 - 65 psi

A

Major discrepancy

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107
Q

What type of discrepancy (TANB). Tire air pressure above 80 psi

A

Major discrepancy

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108
Q

What type of discrepancy (TANB). Clearance light extinguished

A

Major discrepancy

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109
Q

TCTO

A

Time compliance technical order

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110
Q

Basis for changing an asset

A

TCTO

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111
Q

OEM

A

Original equipment manufacturer

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112
Q

ORDs

A

Operation requirement documents

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113
Q

Who can initiate a TCTO

A

Anyone

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114
Q

Provides information necessary to properly maintain and service a trailer

A

Manufacturers service manual

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115
Q

Manufacturers service manual for a trailer contains what 8 sections

A 
Index of topics
Weight specifications
Torque specifications
Safety precautions and warnings
Procedures for servicing wheels and bearings
Service procedures
Drawings and schematics
Exploded views of different sections
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116
Q

Use of MPCs for performing inspections is

A

Mandatory

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117
Q

Best way to ensure trailer and trailer component life

A

Rinsing off all trailer components with fresh water immediately after the trailer has been removed from the salt water

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118
Q

RB-S hitch system rating

A

10000 lbs, class V

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119
Q

TANB hitch system rating

A

10600 lbs, class V

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120
Q

Welding the hitch to the frame is

A

Unauthorized

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121
Q

Ball mount needs

A

To be stamped or have a sticker indicating class rating, maximum trailer weight, and maximum tongue weight

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122
Q

Proper height of hitch ball mount for TANB

A

24 inches

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123
Q

Ensure the coupler latch is

A

Free from corrosion and operates correctly

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124
Q

Inspect surge brake for

A

Deformity or damage

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125
Q

Ensure the back half of the surge brake actuator is

A

Properly greased and lubricated

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126
Q

Remove surge brake reservoir cap using

A

1 1/16-inch socket

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127
Q

The brake fluid reservoir should be at least ____ full of fluid

A

3/4

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128
Q

Keeping the brake fluid reservoir at least 3/4 full helps reduce

A

Condensation

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129
Q

If brake fluid shows contamination

A

Flush the system as per appropriate MPC

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130
Q

If the brake reservoir is low

A

Add brake fluid (DOT 3)

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131
Q

Keep automotive brake fluid, DOT 3, away from

A

High temperatures and all sources of ignition and oxidizers

132
Q

Wear what when handling brake fluid

A

Chemical safety glasses or goggles and rubber or neoprene gloves

133
Q

Ingestion of brake fluid may cause

A

Gastrointestinal tract irritation

134
Q

Inspect the emergency breakaway lever to ensure ____ and that the hardware holding the breakaway locks are ____

A

it is functioning correctly

secure and tight (90 to 120 inch-pounds of torque)

135
Q

How tight should the hardware holding the breakaway locks be

A

90 to 120 inch-pounds of torque

136
Q

When the emergency breakaway lever is in the down position (N) it indicates

A

it is in the ready position

137
Q

Check for what on the electrical leads for the reverse solenoid

A

Brittle, chaffed, or broken wires

138
Q

Inspect brake hose for

A

cracks, dry rot, and leaking connections

139
Q

Electric hydraulic brake actuator unit shall be filled to ____

A

The bottom of the filler neck

140
Q

If the ball rating is not 2 5/16 inches or properly installed

A

A disabling casualty exists

141
Q

If inferior bolts are used for installation of the hitch system

A

A disabling casualty exists

142
Q

Whenever a disabling casualty exists, the boat/trailer package shall be

A

Immediately placed in charlie status and repaired

143
Q

Illuminate the location and size of a boat trailer

A

Boat trailer lights

144
Q

Prevent road debris from damaging vehicles following the trailer and from damaging the boat exterior during towing

A

Fenders

145
Q

Type of jack equipped with the RB-S trailer

A

Emergency roll on jack

146
Q

Flat spots indicate

A

Wheel lockup and tire skidding

147
Q

Cupping indicates

A

Out of balance

148
Q

Toe wear indicates

A

Incorrect toe in

149
Q

Side wear indicates

A

Loss of camber or overloading

150
Q

Edge wear indicates

A

Under inflation

151
Q

Center wear indicates

A

Over inflation

152
Q

Tread depth for the RB-S

A

1/16 inch

153
Q

Tread depth of TANB

A

1/4 inch

154
Q

Maximum inflation of the RB-S is

A

50 psi

155
Q

Inflation of the TANB is normally

A

80 psi

156
Q

Check tire inflation pressure how often

A

Weekly

157
Q

Most important factor in tire life

A

Tire inflation pressure

158
Q

A force of 85 pounds applied at the end of a wrench one foot long will yield

A

85 ft lbs of torque

159
Q

Relationship of the centerline of the tire to the hub face of the axle

A

Offset

160
Q

Three characteristics of wheels

A

Bolt circle, capacity, offset

161
Q

Combination of the tire and rim

A

Wheel

162
Q

The amount of up, down, and side to side motion that the bearings allow the hub assembly to move

A

End play

163
Q

Support both radial and axial loads, and generally can carry higher loads than ball bearings due to the greater contact area

A

Tapered roller bearings

164
Q

Currently being used on the TANB trailer. This system converts the standard system into a pressurized leak-proof system that keeps salt water and contaminates out of wheel bearings

A

Air-tight bearing protector

165
Q

House the bearing sets that allow the entire wheel hub assembly to spin on the axles spindle

A

Bearing hubs

166
Q

Brake discs are manufactured out of

A

Cast iron, grey iron, or stainless steel

167
Q

Have a removable disc that separates from the hub

A

Two piece systems

168
Q

Has a hub incorporated into the disc

A

One-piece system

169
Q

Harness the friction applied by the calipers and brake pads to stop the trailer

A

Brake discs

170
Q

Squeal when the pad has worn down to its replacement thickness

A

Wear indicators

170
Q

Whenever a disabling casualty exists, who should be notified

A

CO/OIC

170
Q

What bolts must be used for installation of the hitch system

A

Grade 8 bolts

171
Q

If the brake fluid shows contamination ____

A

Flush the system as per appropriate MPC and consult the proper technical publication for proper flushing procedures

172
Q

When using general purpose grease or equivalent via the zerk fitting ____

A

Fully cycle the tongue jack while lubricating the gears

173
Q

Remove the tongue jack cap to inspect

A

For cracks in the cap and corrosion in the gears

174
Q

Boat winches are to inspected with the ____

A

Rope or strap fully paid out

175
Q

Inspect the winch rope/strap for ___

A

Fraying, tears, fiber separations, and creases

176
Q

Inspect the winch drum gears for ____

A

Missing teeth, corrosion and rust

177
Q

Inspect and lubricate the winch gears and brake actuator using ____

A

General purpose grease or equivalent

178
Q

Before taking the trailer and boat into tow, you must ensure ___

A

That the boat is properly secured to the trailer

179
Q

The final mechanism to keep the vessel or asset from coming off the trailer if involved in an accident

A

Safety tie-downs and straps

180
Q

Always ____ tie-downs when inspecting them

A

Remove

181
Q

Lubricate trailer straps mechanism with ___

A

All-purpose grease or equivalent

182
Q

Inspect trailer tie-down points for

A

Loose bolts and/or missing bolts and nuts

183
Q

Best way to prevent corrosion and rust

A

Fresh water flushing

184
Q

The only way to prevent trailer degradation

A

Continuous maintenance

185
Q

____ will corrode faster than steel bolted to steel

A

Dissimilar metals

186
Q

Inspect trailer structure for ___

A

Bent structures, corrosion, rust, cracks, and/or deformities

187
Q

All hardware and securing eyes should be ___

A

Tight and free from rust or corrosion

188
Q

Ensure rivets, skid plates, and protection pieces are ___

A

Flushed thoroughly and are in good repair

189
Q

Ensure the ladder is ___

A

Securely fastened to the trailer frame and has good non-skid strips on the steps

190
Q

Ensure all retro reflective material is

A

Marking and is in good repair

191
Q

Inspect all instructions and warnings ensuring they are

A

Legible and in the proper location

192
Q

Very important in ensuring the hull structure remains uniform and undamaged during long and varying transits through diverse conditions

A

Support systems (bunks and rollers)

193
Q

Bunk height should be ____

A

Uniform side to side, fore, and aft

194
Q

Keeps rust and corrosion from accumulating on the running gear and axles

A

Flush kit

195
Q

Flushes the wheels, brakes, and axles

A

Flush kit

196
Q

If replacing any hardware, only replace with

A

Manufacturer’s recommended hardware

197
Q

When inspecting brake lines, ensure ___

A

the brake lines are not bent, chaffed, kinked, cracked or loose

198
Q

Most of the Coast Guard’s brake lines are constructed of ____

A

1/8-inch stainless steel tubing with brass fittings

199
Q

Brake line tubing terminations are usually

A

Double-flared

200
Q

The entire brake line assembly is rated at

A

3000 psi

201
Q

Brake hoses are constructed of

A

Synthetic rubber and wire impregnated or reinforced 1/8-inch hose, capable of resisting the chemical properties of brake fluid

202
Q

Brake hoses must be

A

DOT approved and rated for 3000 psi

203
Q

When inspecting brake hoses, ensure ____

A

there is no chafing, kinks, binds, crack, or dry rot, and that they are affixed correctly

204
Q

Trailer brake lines are coiled because ___

A

Trailers are built to flex

205
Q

Which part of the trailer may have a need for chafe gear

A

Brake lines and hoses

206
Q

Before conducting maintenance on a trailer ____

A

Notify your first line supervisor and the EPO

207
Q

First step to completing trailer maintenance

A

Ensure the trailer has no load, is on a level surface, and the tires are chocked

208
Q

Where should the danger tag for maintenance on a trailer go

A

Trailer tongue

209
Q

Loosen lug nuts how much and where

A

Half a turn only on the rims to be removed

210
Q

Where is the jack point on a trailer

A

Under the frame in front of the tongue jack

211
Q

Jacks should always be used in conjunction with ____

A

A rated weight support device or jack stand

212
Q

Before removing the lug nuts ____

A

Check the wheel bearing end play

213
Q

Any noticeable end play could indicate

A

Loose axle nut or most likely worn wheel bearings

214
Q

After lug nuts are removed place them ____

A

In a plastic bag

215
Q

Inspect the lug nuts and studs for ____

A

Corrosion and rust, damaged threads, loose studs

216
Q

If not removing the brake line from the caliper

A

Set the caliper on a stable surface or wooden block

217
Q

If removing the brake line

A

Make sure a suitable container is placed under the brake line once it is disconnected

218
Q

It is recommended that a brake pad be replaced if it is ____ of its original size and/or ____

A

1/4 inch

The wear indicator in the pad has worn off of the squealer where the indicator has made contact with the rotor

219
Q

The thickness of a new inner brake pad is approximately ____

A

0.640-inch (including mount plate)

220
Q

The thickness of a new outer brake pad is approximately ____

A

0.450-inch (including mount plate)

221
Q

What should be worn when working on brakes

A

Approved filter mask

222
Q

Never blow out brakes with ____

A

Compressed air

223
Q

Use of _____ to clean brakes is a fire danger

A

Petroleum-based solvents

224
Q

Brake pads must be replaced in ____

A

Pairs

225
Q

Ensure retention tangs are not

A

Rusted or missing

226
Q

Ensure the bleed valve has not been _____ and that the hex has not been ____ on the brake calipers

A

Crushed

Rounded

227
Q

Ensure the fittings of the calipers are ____

A

Brass

228
Q

Inspect the brake disk for

A

Warping
Pitting
Cracking
Scoring

229
Q

If the dial indicator exceeds _____, the rotor is warped (brake disc)

A

.004

230
Q

If the rotor is warped beyond .004 it should be ____

A

Machined or replaced

231
Q

Remove the forced bearing lubricator cup by ____

A

tapping on the outer edges until you can remove it from the hub

232
Q

If any bearing is ever dropped it must be ___

A

Replaced

233
Q

Never ____ a grease seal

A

Re-use

234
Q

Clean all grease from the hub using

A

Dry cleaning solvent, MIL-PRF-680, Type III

235
Q

If one race is damaged

A

All the bearings and races are to be renewed for the entire axle

236
Q

When replacing bearing races, use a ____ to tap out the races

A

Brass punch

237
Q

Tap out the inner race in ______ pattern

A

Crisscross

238
Q

When inspecting the spindle, check for ___

A

Burrs, barbs, and discoloration

239
Q

Measure both bearing lands to ensure

A

The bearings did not seize or spin

240
Q

Inspect the grease sealing surfaces of the spindle to ensure

A

It is not corroded or damaged

241
Q

Check the threads on the spindle by ___

A

Chasing the spindle nut up and down the threads

242
Q

Preferred method for installing a wheel bearing race is with ____

A

Arbor press

243
Q

Secondary method for installing a wheel bearing race

A

Brass punch

244
Q

Pack the ____ bearing first

A

Inner

245
Q

Wear when applying grease to wheel bearings

A

Powder free latex gloves

246
Q

When packing wheel bearings, apply approximately ____ of bearing grease to the palm of your hand

A

One tablespoon

247
Q

Ensure the brake bleed valve hose is installed on ___

A

The top of the caliper

248
Q

Open the bleed valve on the caliper about ___ using a ____ wrench

A

1/2 turn

1/4-inch

249
Q

When installing lug nuts, ensure ____

A

The taper side is mounted in the rim

250
Q

Start all lug nuts by hand to avoid

A

Cross-threading

251
Q

After ____ miles, re-torque the lug nuts to ____, using a _____ pattern

A

100
85 foot-pounds
Star

252
Q

Trailer lights use ____ for their wiring

A

16 - 14 American Wire Gauge (AWG) stranded copper

253
Q

Primary cause of trailer electrical failures

A

Corrosion

254
Q

Vehicles with a gross vehicle weight (GVW) below ____ must display at nighttime or when visibility is below ____

A

4500 lbs

1000 ft

255
Q

Tail lamps must be at a height of ____ and ___

A

15 - 72 inches

At the same level, as widely spaced as possible

256
Q

The tail lamps must consist of

A

A red light plainly visible at 1000 ft, and a tail lamp or separate lamp that emits a white light to illuminate the rear license plate, clearly visible at 50 ft

257
Q

Stop lamps must be

A

Red or amber light, or a colour in between, plainly visible at 300 ft in sunlight, may be part of another lamp

258
Q

Turn signals must be

A

White or amber, or a colour in between if mounted in front of the vehicle

259
Q

Turn signals must be visible from ____ of the front and rear of the vehicle if the vehicle is 80 inches wide, ____ if it is less than 80 inches wide

A

500 feet

300 feet

260
Q

Reflectors must be

A

At a height of 15 - 60 inches, visible at night at all distances, visible from 100 - 600 feet when directly in front of lawful lower beams of headlamps

261
Q

Trailers that are at least 80 inches wide will also be equipped with

A

Four clearance lights, two front, two rear. Four side marker lights, four reflectors, and hazard lamps

262
Q

Trailers that are at least 30 ft long shall be equipped with

A

Two side marker lamps, one centrally mounted on each side. Two reflectors, one centrally mounted on each side. And hazard lamps.

263
Q

Front or center clearance lamps, identification lamps, side marker lamps or reflectors must be or reflect ___

A

Amber

264
Q

Rear clearance lamps, identification lamps, side marker lamps, or reflectors must be or reflect ____

A

Red

265
Q

Reflectors must be mounted at a height from ____, or ____

A

24 - 60 inches

As high as practical if less than 24 inches

266
Q

Clearance lamps shall be mounted to ___

A

Indicate the extreme height and width

267
Q

Clearance and side marker lamps may be mounted ____

A

In combination

268
Q

Clearance lamps, side marker lamps, and identification lamps must be visible under normal atmospheric conditions at all distances between ___

A

50 and 100 feet

269
Q

Reflectors must be visible at nighttime distances from ____

A

100 - 600 feet of lawful lower beam headlamps

270
Q

Standard boat trailers are required to have (lighting)

A

Retro-reflective tape, reflectors, tail lights, brake, signal, and license plate lights

271
Q

The filament is made from ___

A

A material with greater resistance than the wires linking the battery and bulb

272
Q

White wire in a trailer’s light connections

A

Ground wire

273
Q

Red wire in a trailer’s light connections

A

Reverse solenoid

274
Q

Blue wire in a trailer’s light connections

A

Brakes

275
Q

Brown wire in a trailer’s light connections

A

Tail/running lights

276
Q

Black wire in a trailer’s light connections

A

12-volt power supply

277
Q

Green wire in a trailer’s light connections

A

Right turn signal

278
Q

Yellow wire in a trailer’s light connections

A

Left turn signal

279
Q

RB-S uses how many pins in the 7 pin connector

A

5 (1, 5, 3, 6, and 7)

280
Q

TANB uses how many pins in the 7 pin connector

A

6 (1 - 6)

281
Q

Pin #1

A

White ground

282
Q

Pin #2

A

Blue electro hydraulic brakes

283
Q

Pin #3

A

Brown tail/running lights

284
Q

Pin #4

A

Black 12-volt power supply

285
Q

Pin #5

A

Yellow left turn signal

286
Q

Pin #6

A

Green right turn signal

287
Q

Pin #7 (or center)

A

Orange (or purple) reverse solenoid

288
Q

Best defense for preventing corrosion and damage to trailer wiring systems

A

Heat shrink used in conjunction with wire tinning

289
Q

Impervious rubberized material that keeps water from entering a butt splice or wire connection. It has chemical on the inside surface that is heat activated

A

Waterproof heat shrink

290
Q

Plating each strand of wire with a thin coat of solder is called ____

A

Tinning

291
Q

Solder is typically made of

A

60% tin

40% lead

292
Q

Tinned wire is sometimes called

A

Marine Grade Wire

293
Q

A solenoid valve coil can be tested by ___

A

Taking a resistance check across the solenoid

294
Q

A good coil has a resistance of ___ (reverse solenoid)

A

15.8 ohms

295
Q

Device in the tow vehicle that supplies power from the tow vehicle to the electro hydraulic brake actuator

A

Electric trailer brake controller

296
Q

When adjusting the electric trailer brake controller, drive the vehicle at ____

A

10 - 15 mph

297
Q

Mounted on the trailer and takes the signal voltage from the tow vehicle brake controller and converts the power to proportional hydraulic pressure that is sent to the trailer brakes

A

Electro-hydraulic brake actuator

298
Q

Has a direct current motor with a hydraulic pump

A

Electro-hydraulic brake actuator

299
Q

Electro-hydraulic brakes must be equipped with

A

A breakaway switch and emergency power supply

300
Q

Built in on the electro-hydraulic brake actuator to protect the trailer breakaway battery from overcharging

A

Small charging unit

301
Q

Black wire going to the electro-hydraulic brake actuator

A

Battery voltage from the tow vehicle and the battery on the trailer/charger (20 amp, 12-volt supply)

302
Q

Blue wire going to the electro-hydraulic brake actuator

A

Output from in-cab electronic brake controller

303
Q

White wire going to the electro-hydraulic brake actuator

A

Trailer and tow vehicle ground

304
Q

Yellow wire going to the electro-hydraulic brake actuator

A

Cold side of breakaway switch

305
Q

The input and output wires from the tow vehicle to the actuator must be properly sized and terminated, using a dedicated ______ circuit on the tow vehicle, and ____ gauge wire minimum

A

25 - 40 amp

12

306
Q

___ gauge wire is recommended to optimize performance with the electro hydraulic brake actuator

A

10

307
Q

Low temperature applications below 0*F require a ______ circuit (Electro hydraulic brake actuator

A

40-amp

308
Q

Minimum brake force is applied when ____ is applied to the hydraulic brake actuator

A

3 VDC

309
Q

Maximum brake force is applied when ____ is applied to the hydraulic brake actuator

A

12 VDC

310
Q

Submersible wiring for the lamp assembly enters the watertight enclosure by means of _____

A

A grommet or seal

311
Q

Cover the electrical tips at the base of the bulb with ____ to keep off the corrosion

A

Dielectric grease

312
Q

If none of the lights work check

A

The ground wire

313
Q

If some of the lights work check

A

The bulbs and sockets for corrosion or a burned out bulb
The hot wire that forms the rest of the circuit to the light fixture
Broken wires

314
Q

Safer way of checking vehicle wiring, shows if the tow circuit is properly configured, one end tests a 7 way plug, and the other tests a 4 way plug. Pinpoints where problem exists

A

Trailer circuit tester

315
Q

Clean and lube trailer light connection plug and wiring with

A

Silicone insulated grease

316
Q

Another name for silicone insulated grease

A

Molykote DC 44, Mil-L-15719A

317
Q

First step in replacing electrical parts on the trailer

A

Tag out

318
Q

On brake lines, do not apply pipe sealant to threads that are ___ from the end of the pipe or closer

A

1/8”

319
Q

Thread sealant is also called

A

Loctite 565 PST

320
Q

Loctite 565 PST may cause

A

Dermatitis

321
Q

Ensure that no sealant contaminates the ____ of the brake lines

A

Interior

322
Q

The reverse solenoid ground wire should be attached to ____

A

Trailer actuator bolt

323
Q

The reverse solenoid ground wire should be a ____ length of number _____ wire and terminate with a ____

A

3-foot
14
Ring-type terminal connector

MK3 (10 decks)

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