Lull 1044C-54 Series II Service Manual - Manual (Page 361)

Axles and Brakes
31200079 9-17
5. Record the lowest pressure observed before the accumulator
recharges. The pressure should be 950–1200 psi. This reading is the
accumulator recharge pressure.
6. Shut the engine off.
7. Slowly pump the brake pedal while closely watching the pressure
gauge.
8. Record the lowest pressure observed before the pressure drops to
nearly zero. This reading is the nitrogen pre-charge. This pressure
should be 375–425 psi.
9. If either of the recorded readings are outside the recommended
ranges, contact the JLG Service Department.
Towing a Disabled Machine
Towing a disabled machine should only be attempted as a last resort, after
exhausting all other options. Make every effort to repair the machine, and
move it under its own power, before using the emergency towing
procedure outlined below.
Important: In the event the vehicle is disabled and cannot be moved under
engine power, the situation must be properly evaluated and dealt with
on an individual basis. Contact your local JLG Service Department at
(877) 554-5438 or (717) 485-6657 for specific instructions for your
particular situation.
Fig. 9-5: Park Brake Hoses
MV0340
1
2