D. Excess Vibration May Cause Failure Of One Or More Castings
A "WARNING" label (part number 3097-105-158, item 58, page 14) has been attached to each set
of castings. If, after installing the System and ladders, you note excessive movement of the ladders
while operating the vehicle, check the following (referring to drawings on pages 11 & 15 and bill of
materials on page 14 and information provided below). Remove the ladders before proceeding.
1. Actuator Retainer Adjustment (see Figure 1, page 11)
a. Check hex head bolts (items 46 and 47) to see if either one is loose. If one or both are loose,
proceed as follows. If they are tight, proceed to Section VI. D. 2.
b. To adjust (refer to Chart 2, page 14 for item numbers in parenthesis):
1
. Lower system approximately one-half way down and remove ladders.
2
. Loosen locking nut (6) and turn hex head bolt (5) all the way in to the inside arm
casting
(2).
3. Snip and remove locking wire (53).
4. Raise the unit until the electric actuator is fully extended and the clutch ratchets. In the
raised, or stored position, the inside arm casting should be almost parallel with hose bed
wall (actually 1 to 2 degrees less than parallel).
5. Lower unit to provide better adjustment access. Loosen jack bolt (46) and adjust tension
bolt (47).
• To increase outward lean, turn out on tension bolt (47)
• To decrease outward lean, turn in on tension bolt (47)
6. Re-tighten jack bolt (46) and raise unit completely to check adjustment.
7. When both bolts are tight and the outward lean of the inside arm casting (2) is 1 to 2
degrees, the adjustment of the actuator retainer is complete.
8
. Replace safety wire.
9
. Now re-adjust the Adjustment Stop (5 and 6). See Section VI. D. 2.
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