TM  10-3930-638-24&P 2-56.   HYDRAULIC   LIFT   SYSTEM   MAINTENANCE   (cont) d. Lift Chains and Pulleys (cont). STEP LOCATION ITEM ACTION REMARKS CLEANING WARNING Dry cleaning solvent (P-D-680), used to clean parts is toxic and flammable. Wear protective goggles and gloves and use only in a well ventilated area. Avoid contact with skin, eyes, and clothes and don’t breathe vapors. Do not use near open flame or exces- sive heat and don’t smoke when using it. Failure to do so could cause serious injury. If you become dizzy while using cleaning solvent, get fresh air immediately, and get medical attention. If contact with skin or clothes is made, flush with large amounts of water. If contact with eyes is made, wash eyes with water immed- iately,  and  obtain  medical  aid  immediately. 4 All parts Clean Use  cleaning  solvent  P-D-680 INSPECTION 5 Hose bumpers (5) Inspect Replace if cracked, chipped or mounting hole  enlarged 6 Step bolts (9) Inspect Replace if body is worn or cracked or if threads are damaged 7 Hose pulleys (11) and Inspect Replace as an assembly if pulley is cracked, bushings (12) bent  or  damaged.  Replace  bushing(12) (step 2i above) if inside diameter is 0.79 inch or more (use bore gage to measure) 8 Pulley bar (16) Inspect Replace if bent or cracked; chase outer threaded hole with 1/4-20 tap; chase inner threaded hole with 7/16-1 4 tap 9 Chain  pulleys  (18)  and Inspect Replace as an assembly if pulley is cracked, bearing (19) bent or damaged. Replace bearing (19) (step 20 above) if rolling action is rough or if inside diameter is 1.24 inches or more (use bore gage to measure) 2-407