TEST OR INSPECTION
Stay clear of equipment ladder rack area unless equipment ladder rack is locked in
raised position or in fully lowered position with POWERED EQUIPMENT RACK
MASTER switch in OFF position. Failure to comply may cause injury or death to
Front and rear ladder rack motors operate independently from one another. If either motor
operates to a point of binding, actuator arm may begin to make an audible ratcheting
Clutch ratcheting of ladder rack drive motor actuator is normal operation.
Front and rear ladder rack drive motors are a matched set. If motors do not move at same
speed, it may be necessary to replace both motors as a set.
Pull ladder rack detent straps and release (WP 0011). Put POWERED EQUIPMENT
RACK LIFT switch to DOWN position (WP 0004). Check if front and rear ladder rack
motors operate equipment ladder rack to lowered position.
If both front and rear equipment ladder rack motors do not operate, go to
Put POWERED EQUIPMENT RACK LIFT switch to UP and back to DOWN position
(WP 0004). Check if either front or rear equipment ladder rack actuator motors operate
equipment ladder rack to lowered position.
If both equipment ladder racks operate, fault corrected.
Remove ladders from equipment ladder rack (WP 0011). While an assistant pulls non-
operating ladder rack detent strap and holds (WP 0011), put POWERED EQUIPMENT
RACK LIFT switch to DOWN position (WP 0004). Check if non-operating ladder rack
actuator motor operates equipment ladder rack to lowered position.
If non-operating equipment ladder rack does not operate to lowered
position, go to Step 38.