TM 10-3930-638-24&P 4-6. REAR AXLE TRUNNION (cont) STEP LOCATION I T EM ACTION REMARKS CLEANING  (cont) 2 All parts Clean Use cleaning solvent P-D-680. Dry thor- oughly  with  moisture  free  compressed  air INSPECTION 3 Grease  fittings  (1) Inspect Replace if cracked or broken, or if threads and pivot pins (5) damaged 4 Washers (3 and 4) and Inspect Replace if scored, worn or damaged bushings  (7) 5 Trunnion (6) Inspect Repair by welding if cracked or if welds broken. Replace if severely cracked or otherwise damaged INSTALLATION 6 Rear axle a. Two bushings (7) Install Use rod that will contact outer race of trunnion bushing, and press bushing into pivot bore of trunnion until flush with surface of trunnion b. Trunnion (6) Position Use chain hoist with eye bolts to raise trunnion until holes in vehicle frame and trunnion are aligned WARNING Be sure vehicle is securely blocked and chain hoist is securely at- tached to trunnion before performing following steps. Failure to do so could cause serious injury or death by equipment fall- ing on you. NOTE Make sure pivot pins (5) are clean and free of grease or oil before installation. c. Pivot pins (5) Install From inside of trunnion, insert pins through trunnion and frame d. Two large washers (4), Install  and Use chain wrench or pipe wrench on grease small washers (3) tighten fitting end of pivot pin to prevent pin and new lock nuts (2) from turning. Tighten lock nuts (2) to 460-500  pounds  foot  torque e. Two grease fittings (1) Install  and Until  securely  mounted tighten f. Two grease fittings (1) Lubricate Refer to current lubrication order 4-253  (4-254  blank)