Lull 944E-42 Service Manual - Manual (Page 86)

Axles, Drive Shafts, Wheels and Tires
5-14 944E-42
4. Block all four wheels to help prevent the machine
from moving after the parking brake is disabled.
5. Position the towing vehicle in place. Attach a rigid
tow bar to the disabled machine.
6. Remove the cover (1) from the cab floor to gain
access to the valve plate under the cab.
7. Attach a remote portable hydraulic pressurizing unit
to the parking brake gauge port (2) on the
accumulator charge/secondary function valve (3)
located under the cab floor.
8. Clear the area of all unnecessary personnel.
9. Have an operator seated in the machine.
10. Turn the key 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.
DO NOT exceed 650 psi (45 bar). Close the pump
needle valve on the pressurizing unit.
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. Remove the blocks from the wheels. SLOWLY tow
the machine to a secure location.
14. When towing is completed, remove the pressurizing
unit and replace the cab floor.
WARNING
BLOCK ALL FOUR WHEELS. Failure to do so could
result in machine roll-away.
CAUTION
DO NOT exceed 650 psi (45 bar) when pressurizing
the park brake. Applying to much pressure may
damage the brake seals.
OU0742
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