TM  10-3930-638-24&P 4-2.   ENGINE   MAINTENANCE   (cont) h. Timing Gear Cover (cont). STEP LOCATION ITEM ACTION REMARKS REMOVAL  (cont) NOTE Do not damage aluminum wall of timing gear cover (27) while separating oil seal (14) in the following step. 5 Timing gear a. Oil Seal (14) Drive   deeper Use 2“ diameter sleeve cover (27) onto shaft b. Timing gear cover Remove Use care not to damage (27)  with  Idler  gear hub  (13) aluminum  Timing  gear cover (27) c. Gasket (30) Remove  and discard NOTE Idler gear hub (13) is press fitted in aluminum. Do not perform next step (d.) unless inspection requires replacement. d. Idler gear hub (13) Remove Push out from rear (engine side) of timing gear cover (27) e. Two studs (28) Remove Only if necessary f. Three studs (29) Remove Only if necessary 5 Crankshaft a. Oil seal (14) Remove  and discard b. Oil slinger (31) Remove 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 o clothes is made, flush with large amounts of water. If contact with eyes is made, wash eyes with water immedi- ately, and obtain medical aid immediately. WARNING Wear  safety  glasses  when  drying  parts  with  compressed  air.  Fail- ure to do so could cause serious injury to eyes and possible blind- ness. If you hurt your eyes or if a foreign object is blown into your eyes, seek medical attention immediately. Change   1   4-63