10. STEERING GEAR HYDRAULIC SYSTEM RESERVOIR
Fill and maintain 3/4 full. Capacity is 8- 1/2 quarts (8 liters). Do not fill completely. Service every
12,000 miles (19,000 kilometers) or 12 months, whichever occurs first.
11. BRAKE MASTER CYLINDER
Use only brake fluid silicone BFS (MIL-B-46176).
Check level weekly. Fill to 1/2 inch (12.7 millimeters) from top of master cylinder. Use BFS
(MIL-B-46176) for brake master cylinder.
12. REAR SPRING TRUNNION BEARINGS
Every 3,000 miles (4,800 kilometers) or 6 months, whichever occurs first, loosen screws on
bearing cap, and lubricate through fittings until lubricant appears around cap. Tighten
capscrews. Every 6,000 miles (9,600 kilometers) or annually, whichever occurs first, remove,
Weekly, check fluid level and drain only when required by maintenance repair action, or if
contaminated by water or other foreign material. Set boom in horizontal position and remove
drain plug from case. Remove breather and level plug; fill drum to level of plug hole. Install
plug. Clean and install breather.
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 with new OE/HDO. Wipe off excess and coat cable
with CW before rewinding cable an drum.
15. CRANE HYDRAULIC OIL TANK
With boom in horizontal position, remove plug from top of tank; if level is below bottom mark
on gage, replenish to top mark. Every 12 months, remove plug from bottom of tank and drain.
To completely drain system, operate crane several times, disconnect hydraulic lines, and allow
to drain. Clean and install plug, and connect hydraulic lines. Refill tank with 33 gallons
(125 liters) of oil (M543, M543A1, M543A2 wrecker 70 gallons [265 liters]). Operate crane
several times to completely fill system. Check level.
16. DUMP BODY HYDRAULIC RESERVOIR
Rest weight of dump body on safety braces when performing
maintenance with dump body in raised position.
Remove filler plug slowly to release pressure. Do not overfill.
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