Maintenance

Question 1

Lowering of the cab may be stopped by returning the tilt valve selector handle to the ___

Answer 1

neutral position.

Question 2

If the distance measured exceeds__ on the REAR BRAKES, the brakes are out of adjust- ment and require immediate attention.

Answer 2

2”

Question 3

To manually release the spring brake chamber, unscrew (turn counter-clockwise) the ___ located at the end of the spring brake chamber utilizing a ___ or socket assembly.

Answer 3

1/2” diameter bolt / 3/4” box end wrench

Question 4

The alternator is a Niehoff Model C619-1 ___amp.

Answer 4

340

Question 5

12.84 volts

Answer 5

100%

Question 6

12.50 volts

Answer 6

75%

Question 7

12.18 volts

Answer 7

50%

Question 8

11.88 volts

Answer 8

25%

Question 9

The Seagrave apparatus has a special receptacle located underneath on the____ for connecting to electrical jumper cables.

Answer 9

left side of the pump panel

Question 10

Before using jumper cables, make sure the booster vehicle also has a negative ground system (____).

Answer 10

negative terminal attached to a metal part of the vehicle

Question 11

To avoid damage to vehicle electronic components, voltage supplied to a vehicle’s electrical system must not exceed __ volts.

Answer 11

16.0

Question 12

Check system voltage with engine off and all electrical accessories off (____).

Answer 12

12.9 Volts minimum

Question 13

Start and run engine, engage high idle and check voltage again (____).

Answer 13

13.7 Volts minimum

Question 14

Weekly
Run engine for ___ at high idle (1000 rpm) with air conditioning at maximum cool and all electrical accessories activated.

Answer 14

10 minutes

Question 15

Check pressures by gauge (___ front, ___ psi rear).

Answer 15

120 psi

Question 16

Check operation of pressure governor by opening the tank to pump & tank fill valves fully and setting the discharge pressure at ___.

Answer 16

150 psi

Question 17

Steering Box and Steering Linkage

Have an assistant move the steering wheel back and forth with short (___) rapid movements.

Answer 17

4” to 6”

Question 18

Report defect if belt tension is loose enough to allow more than ___ deflection measured at a point midway between pulleys.

Answer 18

1/2”

Question 19

Dry Vacuum test

Answer 19

This should be at least 20” of vacuum.

Question 20

Special Lubing King Pins (Steering Axles)
The correct method for lubricating the front axle king pin thrust bearings is to ___ each wheel at the axle. This will remove the load on the bearings.

Answer 20

jack up

Question 21

When lubricating the universal joints, it is most important to observe the grease seeping past all _____. If grease does not show at any of the seals, tap the opposite side yoke firmly with a plastic or similar type hammer while applying lube gun pressure. If you are unable to get the grease through, report this condition to the shops.

Answer 21

four cross bearing seals

Question 22

To prevent drive shaft slip yoke galling or seizure, it is necessary to apply grease to the fitting until it appears at the ___ in the end of the yoke plug.

Answer 22

relief hole

Question 23

The brake caliper assembly takes a special, ____ required by Meritor. The shops will lube these parts at Annual Pump Test or whenever a brake job is performed.

Answer 23

high temperature, high-pressure grease /

Question 24

The lighthead reaches its maximum efficiency when operated at an angle of ___

Answer 24

+45 degrees.

Question 25

The 70 watt metal halide lamps have an average life expectancy of ____, operate at high temperatures, and at pressures up to 50 psi.

Answer 25

10,000 hours

Question 26

Turn the lamp off at least once a week for a minimum of ___ minutes.

Answer 26

15

Question 27

Do not run the lighthead without its___ in place!

Answer 27

protective lens