Quantcast e.  Assembly (M915A1/Big Cam)

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TM 9-2815-225-34&P 3-61.  FUEL PUMP FRONT COVER AND GOVERNOR REPAIR (Contd) LOCATION/ITEM ACTION REMARKS e.  Assembly (M915A1/Big Cam) 20.     Bushing (6) and gear (7) a.  Install bushing on tachometer drive shaft (2). b.  Put a 0.004 in. (0.101 mm) feeler gauge on top of bushing (6). c.  Press gear onto tachometer There should be 0.002-0.005 in. drive shaft (2). (0.050-0.127 mm) clearance between bushing (6) and gear (7). 21.     Shaft (2), bushing (6), a.  Line up oil groove in top of and gear (7) (assembled) bushing (6) with fuel pump drive shaft (20). b.  Press into cover assembly (8) until bushing (6) bottoms. 22.     Tachometer drive spacer (5) Install on top of tachometer drive Spacer (5) must bottom on bushing (6) with slotted edge bushing (6). down. 23.     Tachometer drive seal (4) Using front cover tachometer Front cover tachometer seal seal driver (36), install with spring driver (36) is part of front cover side down.   and main shaft assembly tool kit (3375175). 24.     Tachometer drive housing Screw into cover assembly (8). Do not overtighten housing.  This (3) will compress tachometer drive spacer (5) too much and will reduce its effectiveness. 25.     Fuel pump drive gear (12) Using main shaft gear and Use front cover and main shaft bearing installation tool (35), assembly tool kit (3375175).  Flat press onto fuel pump drive shaft side of gear should face away from (20) until against bearing (10). bearing. 26.     Fuel pump drive coupling a.  Lubricate fuel pump drive (13) shaft (20) and bore of coupling. b.  Press onto fuel pump drive shaft (20) until against fuel pump drive gear (12). 3-414


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