LO-9-2320-272-12
TRUCK, 5-TON, 6X6, M939, M939A1 AND M939A2 SERIES (DIESEL)
LUBRICATION ORDER
JUNE 1990
LO-9-2320-272-12 - Page 30 of 34
NOTES (Cont’d)
10.
REAR SPRINGS TRUNNION BEARINGS
Every 3,000 miles (4,800 kilometers) or 6 months, whichever occurs first, loosen screws on
bearing cap, lubricate through fitting until lubricant appears around cap, and tighten
screws. Every 12,000 miles (19,000 kilometers) or 12 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 6 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 6 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 gage from top of
reservoir. If level is below full mark on gage, replenish to full mark. Every 12,000 miles
(19,000 kilometers) 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 gage (approximately 100 gallons (378.5 liters)),
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.
CAUTION
Remove filler plug slowly to release pressure. Do not overfill.
Weekly, remove filler plug, gage, and screen; clean and install screen, replenish with oil to
third mark from top on gage with body down in traveling position. Install gage 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, gage, and filler plug. Raise and lower body
several times slowly and recheck oil level.
15.
OIL CAN POINTS
Every 1,000 miles (1,600 kilometers) or monthly, 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.
TA 350565
LO 9-2320-272-12
CARD 31 OF 33
Back to Top
