Table 2-1. Unit Level Preventive Maintenance Checks and Services (PMCS) (CONT).
Item to Be
If an air-operated grease gun does not purge
the fitting, use a hand-operated grease gun.
If the part does not purge, remove fitting
and clean, install fitting and grease again. If
part still does not purge, refer to
maintenance task for that component.
When using a grease gun, apply lubricant to
the fitting until clean lubricant squeezes out
of the part being lubricated.
While operating Material Handling Crane
(MHC), check that engine maintains 1800 50
rpm during hoisting operation. If engine
surges erratically refer to troubleshooting,
Engine does not main-
tain 1800 50 rpms.
Check torque of inner turntable bearing screws
(1). Tighten screws to 370 lb-ft (502 N.m).
Screws are missing.
Check torque of crane base mount bolts and
ensure jam nuts are present.
Any bolt or jam nut is
Check hydraulic tubes and hoses for splits,
cracks, leaks or signs of wear.
Crane tubes or hoses are