3-6
500 HOUR OR 6 MONTH INTERVAL:
1. 50 and 250 hour maintenance.
2. 50, 250 and 500 hour lubrication.
3. Change fuel filter element.
4. Change air filter element.
5. Check antifreeze for protection level and cleanliness.
6. Inspect engine fan and belt.
7. Check water pump and connections for leaks.
8. Check fuel pump and connections for leaks.
9. Change hydraulic filter element, if not changed in the last 250 hours and inspect oil
from element.
10. Change transmission filter element and inspect oil from element.
11. Check condition of all operational and warning placards.
12. Torque mounting bolts on swing bearing and gearbox, winch and axles. (See page 3-23)
13. Inspect boom sections for signs of overload, excessive wear, or other damage.
14. Check axle toe-in.
1000 HOUR OR 12 MONTH INTERVAL:
1. 500 hour maintenance.
2. 50, 250, 500,1000 hour and 12 month lubrication.
3. Adjust engine valve clearance per engine manual.
4. Perform engine maintenance specified in engine manual.
5. Change hydraulic fluid and filter and clean breather and reservoir.
6. Change transmission fluid and filter and clean strainer.
7. Replace vapor block inside slip ring. See turret sub-assembly in parts manual.
24 MONTH INTERVAL:
1. 12 month maintenance.
2. Pressure test engine cooling system.
3. Flush cooling system.
4. Change engine thermostat.
5. Fill with new coolant and distilled water.
6. Perform engine maintenance specified in engine manual for 24 month interval.
S/N:_______________ HOURS:________ DATE:___________ BY:______________
COMMENTS & PARTS REQUIRED:____________________________________________
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Property of American Airlines
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