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TM 9-2320-304-14&P
3-4
Operator Maintenance Instructions (Cont)
3-2. GENERAL LUBRICATION INSTRUCTIONS (CONT).
LOAD HANDLING SYSTEM (LHS).
CAUTION
Sliders may require frequent greasing (possibly every load, depending on environment) to
minimize container jerking during load/unload sequence. Container jerking can result in
damage to container and/or contents.
NOTE
If the part does not purge clean lubricant, notify Organizational Maintenance.
a. Purging of Lubricant. When using a grease gun, apply lubricant to the fitting until clean lubricant
squeezes out of the part being lubricated.
a.1 Lubricate fittings with a manual grease gun. Do not use an air-powered grease gun.
b. Apply grease to lift hook more often if M1120 truck mileage is low, but LHS usage is high.
c. The 50 hour interval is based on actual LHS operating hours. The hours can be tracked by the operator
and recorded in the logbook. The LHS should be lubricated on a monthly or 50 actual operating hour inter-
val, whichever comes first.
d. To allow access to the hook arm cylinder rear grease fittings and LHS hook arm pin, LHS should be
fully extended.
e. Remove safety pin and washer to remove LHS hook arm pin. Lubricate LHS hook arm pin and reinstall
with washer and safety pin.
f. Oil Can Points. Lubricate pivot points every 1,500 mi. (2 414 km) or semiannually. Lubricate moreoften
if usage is high.
Section II. Troubleshooting Procedures
3-2.1. TROUBLESHOOTING INTRODUCTION.
Table 3-1 lists common malfunctions that you may find with LHS and CHU. Refer to TM 9-2320-279-10 for
Troubleshooting. Perform the tests, inspections, and corrective actions in the order they appear in the table.
This table cannot list all malfunctions that may occur, all tests or inspections needed to find the fault, or all
corrective actions needed to correct the fault. If a malfunction is not listed or actions listed do not correct the
fault, notify your supervisor.
3-3. TROUBLESHOOTING PROCEDURES.
To quickly find a troubleshooting procedure, use the Malfunction Index. Table 3-1 contains the operator trou-
bleshooting steps.
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