Apparatus L-7 Rearmonut Aerial

Question 0

How many feet on the side of the rear mount aerial do you need to put stabilizers down

Answer 0

5.2 feet

Question 1

The load capacity of the aerial varies from ____lbs to ___ at the tip depending on the degree of elevation

Answer 1

250 to 750

Question 2

Dimensions of rearmount

Answer 2

36 feet long 
8 ' wide with stabilizers nested 
18.4 with stabilizers down 
10'8" high 
60,000 ibs unloaded

Question 3

Sequence for activating PTO on rearmount aerials

Answer 3

1. Place transmission into neutral
2. Engage maxi- brake
3. Move front brake lock switch to on position ( front brake light will illuminate )
4. Open red cover of PTO control switch and flip to up position .. PTO light on

Question 4

True or false the aerial ladder must be bedded and stabilizers fully nested to disengage PTO

Answer 4

True

Question 5

Sequence for disengaging PTO

Answer 5

1. Bed aerial ladder and nest stabilizers
2. Store wheel chocks and stabilizer pads and make sure all compartments closed
3. Close red cover of PTO control switch
4. Move front brake lock switch to off position

Question 6

The interlock diverted valve allows the aerial ladder to move when the stabilizers are properly engaged . Can you override the IDV

Answer 6

Yes in emergency if there is a malfunction and emergency exists and stability of apparatus and safety of all persons and equipment is considered

Inform IC immediately if IDV override is operated

Question 7

When extending and lowering stabilizers you should start with

Answer 7

The stabilizer on the working side (inboard ) first

Note .. Exception if aerial is not level start with low side first .. This may or may not be inboard side depending on position of rig

Question 8

Short jacked means

Answer 8

A stabilizer that is not fully extended horizontally

Question 9

When should the ground stabilizer pads be placed on the ground

Answer 9

Right before stabilizers contact ground

Question 10

When ground is not level and apparatus leaning you should lower which side first

Answer 10

On lowest side first(direction apparatus leaning)

Note :
lower the low side stabilizer fully
Lower the high side as necessary to a point that levels apparatus ( use inclinometer )
If the inboard side is the high side then it must be fully extended horizontally than lower the distance to level apparatus

Question 11

Manual safety pins should be placed where

Answer 11

In the highest hole possible in the stabilizer

Question 12

How can you tell how far the ladder is extended form the pedestal of the aerial

Answer 12

When the extension footage numbers on the base section vertical struts and the corresponding bright colored vertical strut of second section line up ladder is that length

Question 13

When should the aerial emergency hydraulic operation be used

Answer 13

When normal PTO fails or the engine shuts down and the aerial ladder or jacks need to be used

May not work if aerial losses hydraulic fluid ..however still make attempt. Reason for failure must be addressed before the emergency system can function

Question 14

The engine should be running when the normal/hydraulic switch his placed into auxiliary position

Answer 14

False cannot be running

Question 15

Steps for emergency aerial ladder operations

Answer 15

1. With engine off place ignition ON and place transmission in neutral and apply all brakes
2. On aerial control panel place PTO switch to ON and move the normal/emergency switch to auxiliary position? (Red indicator light will illuminate )
3. At pedestal depress aerial enable for switch
4. Activate the emergency pump switch ( this is a momentary switch ,which means it must hold switch in ON POSITION) and at same time activate the function that u want to perform
5. Once ladder has completed that function release both control lever and emergency pump switch and allow for cool down period before attempting another function

Question 16

When you activate the emergency pump switch you must continually hold the switch until the ladder has completed tins function

Answer 16

True is momentary toggle switch

Question 17

The rotation limiting device limits turntable rotation on the short jacked side too

Answer 17

No more than 15 degrees from center line

Question 18

When may you override the rotation limit switch

Answer 18

If mechanical malfunction occurs and you have confirmed that the stabilizer are fully extended horizontally and loaded vertically

Alarm will sound when using switch
Light will illuminate ate
Only when absolutely necessary

Question 19

If there a malfunction of rotation limit switch

Answer 19

Notify fleet services ASAP

Question 20

How many ff do you need to place stabilizers for aerial ladder

Answer 20

One

Question 21

What are the 2 functions of the interlock diverter valve

Answer 21

1. When ground stabilizers are loaded vertically the aerial interlock valve opens and allows movement of aerial
2. When the aerial ladder is moved from cradle ,it closes the stabilizer interlock valve and prevents movement of the stabilizers

Question 22

Points about lowering stabilizers on Un level ground

Answer 22

1. Start with stabilizer on low side first (regardless if inboard or outboard side)…low side is direction that apparatus leaning
2. Low side stabilizer shall be fully extended horizontally and lowered to max
3. High side is extended as necessary and lowered to point that levels apparatus( utilize inclinometer at rear of apparatus )
4. If inboard side is high side it must be fully extended horizontally and lowered the distance necessary

Question 23

You should match these two things to get the proper load capacity of the aerial

Answer 23

The inclinometer ( located on the inside of aerial base section) and the extension footage numbers

Question 24

When using the aerial emergency hydraulic operation you must perform each function with a deliberate no rush approach . You should perform each function consecutively with no rest .

Answer 24

No when you perform a function ( retract, lower, rotate) you must wait a period so the batteries and electric pump can cool down