TM-9-2320-272-23-5
TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)
TECHNICAL MANUAL; FIELD MAINTENANCE MANUAL; VOLUME 5 OF 5
SEPTEMBER 2012
TM-9-2320-272-23-5 - Page 437 of 623
10.
REAR SPRINGS TRUNNION BEARINGS
Every 36,000 mi (57,940 km) or 36 months, whichever occurs first, remove, clean, dry, and repack
trunnion bearings.
11.
M936, M936A1 AND M936A2 HOIST WINCH
Weekly, with boom in horizontal position, remove level plug from winch worm gearcase and winch input
drive reduction gearcase; if level is below level plug hole, replenish to bottom of hole. Every 12 months,
remove level plugs, fill plug, and drain plugs, and drain gearcases. Install drain plugs and fill to level
plugs. Install level plugs and fill plug.
12.
WINCH AND CRANE HOIST CABLES
Clean and oil with new OE\HDO 30 after each operation. If used infrequently or in very damp or salty
conditions, lubricate with CW-II. Do not lubricate winch cable in dry, dusty conditions. Every 12 months,
unwind entire cable soak and clean with new OE\HDO 30. Wipe off excess and coat cable and drum with
CW before rewinding.
13.
M936, M936A1 AND M936A2 CRANE HYDRAULIC OIL RESERVOIR
Weekly, with boom in horizontal position, remove oil filler cap and gauge from top of reservoir. If level is
below full mark on gauge, replenish to full mark. Every 12,000 mi (19,000 km) or 12 months, whichever
occurs first, remove pipe plug from drain valve, attach hose (furnished with vehicle), and drain oil into a
container. Remove plug in bottom of reservoir to completely drain. Always install plug in drain valve after
draining. Refill reservoir to full mark on oil level gauge (approximately 100 gal (378.5 l)), operate crane
several times to completely fill system check level.
14.
DUMP BODY HYDRAULIC OIL RESERVOIR
WARNING
Support weight of dump body on safety braces when performing maintenance on hoist
mechanism with dump body in raised position. Failure to comply may result in injury or
death to personnel.
CAUTION
Remove filler plug slowly to release pressure. Do not overfill.
Weekly, remove filler plug, gauge, and screen; clean and install screen, replenish with oil to third mark
from top on gauge with body down in traveling position. Install gauge and plug. Raise and lower body
several times slowly and recheck oil level. Drain every 12 months. Remove drain plug from reservoir and
drain with dump body in lowered position. Clean and install drain plug. Refill reservoir, install screen,
gauge, and filler plug. Raise and lower body several times slowly and recheck oil level.
15.
OIL CAN POINTS
Every 3,000 mi (4,800 km) or 6 months, whichever occurs first, lubricate hinges and latches, transfer
case and power takeoff shift linkage, parking brake lever, rear winch control lever linkage, dump truck
tailgate bearings, and spare tire carrier boom roller with seasonal grade OE/HDO.
16.
DO NOT LUBRICATE
Springs, alternator, water pump, or shock absorbers.
TM 9-2320-272-23-5
0820
0820-32
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