TM 9-2350-287-20-1
TABLE 2-1. PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS) FOR M992A1
S= SEMIANNUAL A= ANNUAL
ITEM INTERVAL
ITEM TO BE
PROCEDURE
NOT FULLY MISSION
NO.
INSPECTED
CAPABLE IF
17
A
COOLING SYSTEM
a. Remove and clean cooling system
a. Any missing screws or
PRESSURE RELIEF
pressure relief valve as follows:
broken or missing valve
VALVE
parts, or any coolant leaks.
(1) Unscrew nut (22) and remove hose
(21) from lower end of relief valve (23).
(3) Wipe off accumulation of rust from
relief valve (23). Depress spring to
make sure relief valve (23) is not
broken.
(4) 'Position relief valve (23) in place
and install four screws (24).
(5) Install hose (21) on lower end of
relief valve (23) and tighten nut (22).
18
A
COOLANT
Test radiator coolant for proper
a. Coolant does not pass
protection (refer to TB 750-651).
alkalinity test in TB 750-651.
Not protected to -200F.
a. Check coolant system for leakage.
b. Check coolant level (refer to
TM 9-2350-287-10).
19
A
EXHAUST DUCTS
Check all components. Replace any
Any damaged component,
damaged components. Check all
loose clamps, or exhaust
clamps (25) and mount bolts (26).
leaks.
2-26