TM 5-3805-262-343-1. ENGINE MAINTENANCE (CONT)j. Valves(Cont).CLEANING(1)Clean valves (6 and 9) using power driven fine wire brush. Do not scratchvalve stems.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 ventilatedarea. Avoid contact with skin, eyes and clothes and don-t breathevapors. Do not use near open flame or excessive heat and don-t smokewhen using it. Failure to do so could cause serious injury. If you be-come dizzy while using cleaning solvent, get fresh air and medicalattention immediately. If contact with skin or clothes is made, flushwith large amounts of water. If contact with eyes is made, wash eyeswith water and get medical aid immediately.(2)Clean all parts using cleaning solvent P-D-680. Dry using clean cloths.INSPECTION/REPAIR (SHEET 1 OF 6)(1)Check each spring (3) using spring gage. Check that force required tocompress spring (3) to 1.484 inches is 153 to 167 pounds. Check thatforce required to compress spring (3) to 1.937 inches is 50.5 to 60.5pounds. Replace spring (3) if measured force does not fall within theseranges.(2)Inspect valve (6 or 9) for conditions shown. Replace valve if any ofthese defects are seen.3-76
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