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
capscrews. Every 6,000 miles (9,600 kilometers) or annually, whichever occurs first, remove,
clean, dry, and repack trunnion bearings.
M816 HOIST WINCH
Change gear lubricant only when required by maintenance repair action, or if contaminated
by water or other foreign material.
Weekly, with boom in horizontal position, remove level plug from winch worm gear case and
winch input drive reduction gear case; if level is below level plug hole, replenish to bottom of
13. WINCH AND CRANE HOIST CABLES
After each operation, clean and oil with new OE/HDO. Every 6 months if cable is not generally
used, unwind entire cable; clean and soak; by means of a brush, with new OE/HDO. Wipe off
excess and coat cable with CW. Also coat winch drum with CW before rewinding cable on
14. M816 CRANE HYDRAULIC OIL TANK
With boom in horizontal position, remove oil filler cap and gage from top of tank. If level is
below full mark on gage, replenish to full mark. Every 12 months, remove pipe plug from drain
valve, attach hose (furnished with vehicle), and drain oil into a container. Remove plug in
bottom of tank to completely drain. Always install plug in drain valve after draining. Refill tank
to full mark on oil level gage, approximately 60 gallons (227 liters). Operate crane several
times to completely fill system, and check level.
DUMP BODY HYDRAULIC RESERVOIR
Rest weight of dump body on safety braces when performing
maintenance on hoist mechanism with dump body in raised
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 lowered 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 with OE/HDO 10. Raise and lower body several times slowly and
recheck oil level. Capacity of hydraulic system is 37 quarts (35 liters).
Every 1,000 miles (1,600 kilometers) or monthly, lubricate hinges and latches, transfer and
power takeoff shift linkage, clutch and brake pedal linkage, hand brake lever, rear winch
control lever linkage, and dump truck tailgate bearings, with seasonal grade OE/HDO.
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