Lull 644E-42 Operation Manual - Manual (Page 99)

Emergency Operations
97 Model 644E Origin 3/04
11. Pressurize the park brake with the pressurizing unit. Pump pressure into
the park brake system. 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 pres-
sure 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!
15. Place the cab floor plate back inside the cab when towing is complete.
Reinstall the capscrews and torque the capscrews (4) to 18 lb-ft (25 Nm).
CAUTION:
DO NOT exceed 650 psi (45 bar) when pressurizing
the park brake. Applying too much pressure may damage the brake
seals.
OU0741
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