Lull 1044C-54 Series II Service Manual - Manual (Page 362)

Axles and Brakes
9-18 31200079
Manually Releasing the Park Brake
If it is necessary to tow the vehicle a short distance to avoid a potentially
hazardous situation such as being in an unsafe area on the worksite or on
a roadway, prepare the vehicle for towing as follows;
1. Remove the load from the vehicle.
2. Fully retract the transfer carriage.
3. Fully retract the boom. Position the forks approximately 24" above the
ground.
4. Block all four wheels to prevent any unexpected movement of the
vehicle after the parking brake is disabled.
5. Position the towing vehicle in place. Attach a rigid tow bar to the
disabled vehicle.
6. Disconnect hose (2) from elbow (1) that is located on front of frame.
7. Attach a remote portable hydraulic pressurizing unit to elbow (1).
8. Clear the area of any unnecessary personnel.
9. Have an operator seated in the seat.
10. Turn the ignition switch to the ON position (with the engine not
running), release the park brake (park brake switch OFF).
11. Pressurize the park brake with the pressurizing unit. Pump pressure
into the park brake system. DO NOT exceed 425 psi.
12. Watch the pressure gauge on the pressurizing unit to ensure that the
pressure in the park brake system does not drop during the towing
operation.
13. Carefully remove the blocks from the four wheels of the vehicle.
14. The vehicle can now be towed or pushed out of the way. Tow or push
the vehicle at a very slow speed!
Manually Resetting the Park Brake
Important: Block the wheels of the machine BEFORE attempting to reset the
machine’s park brake. Once the park brake is released the machine’s
park brake AND service brakes are inoperable.
1. Disconnect remote portable hydraulic pressurizing unit from elbow (1).
2. Connect hose (2) to elbow (1) that is located on front of frame.
3. After repairs to the machine have been made, start the machine and
check the park brake and service brakes for proper function.