XLB-4725A
3-12
9. Check the position of the trailer backup lever (Figure 3-11). The lever must be in
the TOWING position (up) to enable operation of the surge brakes.
10. Before towing the trailer, check the following and make all necessary adjust-
ments, corrections, or repairs:
a. Check that trailer jack and outriggers are locked in travel positions.
b. Verify that the transport pin secures the lower boom to the trailer frame. If
the boom is not secured, install the transport pin and pin keeper at this time.
c. Verify that all onboard equipment is secured.
d. Check that the BATTERY ON/OFF switch is in the OFF position.
e. Verify that trailer brake lights and marker lights work properly.
f. Check that the trailer tires are evenly inflated and not low on air.
g. Check that the indicator block and backup lever are in their correct
positions as shown in Figures 3–10 and 3–11.
Trailer Towing and Backing
After backing and before towing the boom lift on the open road, always check the posi-
tion of the backup lever. Make sure the backup lever is in the TOWING position (up).
See Figure 3-11.
Figure 3-11. Backup Lever Position
WARNING
Improper tightening of boom lift trailer wheel nuts can cause wheel lugs to shear,
causing serious injury or damage to equipment. Check and maintain the proper
wheel nut torque according to the maintenance instructions in this manual.
Periodically check the wheel nut torque according to the instructions in Section 4 of this
manual. More frequent torque checks are required when a wheel is recently installed.
After towing, while the trailer wheels are elevated for boom lift operation, check for loose
wheels and for wheel lug wear indications. If a loose wheel mounting is indicated, remove
and inspect the wheel lugs for damage. Do not tow the boom lift with worn or damaged
wheel lugs.
