TM-9-2320-361-24-1 Field Maintenance Manual Volume 1 for M44A2 Series Trucks
Page 373 of 1176
TM 9-2320-361-24-1 0021 00 0021 00-3 GENERAL MAINTENANCE PROCEDURES (Contd) GENERAL INSPECTION PROCEDURES (Contd) 4. Inspect all gears for cracks, using a magnifying glass and strong light. No cracks are allowed. Inspect gear teeth for wear, sharp fins, burrs, and galled or pitted surfaces. Check keyway slots for wear and/or damage. 5. Check all bushings and bushing-type bearings for secure fit, evidence of overheating, wear, burrs, nicks, and out-of-round condition. Check for dirt in lubrication holes or grooves. Holes and grooves must be clean and free from damage. 6. All seals must be replaced with new seals. 7. Inspect core hole expansion plugs for leakage. Replace plugs when leakage is present. 8. Inspect machined-tooled parts for cracks, breaks, elongated holes, wear, and chips. 9. Inspect machined surfaces for cracks, evidence of wear, burrs, nicks, pitted surfaces, and scratches. 10. Inspect mated surfaces for remains of old gaskets or seals, evidence of leakage, pitting, and secure fit. 11. Inspect surfaces for rust, pitting, holes, and severe damage. 12. Inspect oil bathed internal parts for cracks, nicks, burrs, evidence of overheating, and wear. 13. Inspect air actuated internal parts for cracks, nicks, burrs, evidence of overheating, and wear. 14. Inspect externally exposed parts for breaks, cracks, rust damage, and wear. 15. Inspect springs for broken, collapsed, and twisted coils. GENERAL REPAIR PROCEDURES Use the appropriate Work Package within this manual for the part or component being repaired and the guidelines listed below. CAUTION Repaired items must be thoroughly cleaned to remove metal chips and abrasives. Metal chips and abrasives can enter working parts of vehicles and cause damage to equipment. 1. All cracked castings must be replaced. Only minor repairs to machined surfaces, flanges, and gasket mating surfaces are permitted. Use the following methods to remove minor nicks, burrs, and/or scratches: a. File with a fine mill file. b. Wipe surface with a crocus cloth dipped in cleaning solvent. c. Smooth rough surfaces using a surface plate. 2. Remachining of machined surfaces to repair damage, warpage, or uneven surfaces is not permitted. Replace castings. 3. Repair damaged threaded pipe plugs and/or screw threads with a screw tapper. Repair oversized holes with threaded inserts. 4. Refer to TM 9-214 for repair of bearings.