TM 5-3895-373-34
2.17
DIESEL ENGINE REPAIR - Continued.
D.
REPAIR - Continued.
BALANCER UNIT, CENTER MOUNTED
Drive shaft diameters
At front bearing .....................................................................................1.124 to 1.125 in.(28,562 to 28,575 mm)
At rear bearing......................................................................................0.936 to 0.937 in.(23,787 to 23,800 mm)
Oil pump drive splines
Diameter ...............................................................................................1.124 to 1.125 in.(28,562 to 28,575 mm)
Spur gear splines
Diameter ...................................................................................................0.650 to 0.651 in.(15,51 to 15,53 mm)
Diameter of front bearing bore (gear shaft) ..................................................1.374 to 1.375 in.(34,912 to 34,937 mm)
Front bearing (gear shaft)
Outer diameter....................................................................................................................1.3748 in.(34,92 mm)
Inner diameter ......................................................................................................................1.125 in.(28,58 mm)
Diameter of rear bearing bore (gear shaft)...................................................1.800 to 1.805 in.(29,972 to 29,993 mm)
Rear bearing (gear shaft)
Outer diameter......................................................................................................................1.181 in.(30,00 mm)
Inner diameter ...................................................................................................................... 0.937 in.(23,8 mm)
Diameter of balancer unit frame and frame end bushing bores ...................1.656 to 1.657 in.(42,070 to 42,095 mm)
Balance frame and frame end bushings
Outer diameter......................................................................................................................1.66 in.(42,164 mm)
Inner diameter ......................................................................................1.501 to 1.503 in.(38,133 to 38,174 mm)
Clearance of spur gear shafts in bushings ...................................................0.0025 to 0.0047 in.(0,064 to 0,120 mm)
Spur gears
Shaft diameter ......................................................................................1.498 to 1.499 in.(38,054 to 38,069 mm)
Minimum and maximum backlash ..............................................................0.004 to 0.010 in.(0,10 to 0,265 mm)
Backlash of gear shaft to spur gear .................................................................0.002 to 0.007 in.(0,051 to 0,200 mm)
End floats
Spur gear..............................................................................................0.0073 to 0.0148 in.(0,186 to 0,377 mm)
Gear shaft.....................................................................................................0.004 to 0.012 in.(0,10 to 0,30 mm)
Number of teeth on timing gear................................................................................................................................ 37
Gear backlash
Timing/gear shaft..........................................................................................0.003 to 0.014 in.(0,07 to 0,35 mm)
Engine crank/timing gear..............................................................................0.004 to 0.016 in.(0,10 to 0,40 mm)
Inner diameter of gear bore......................................................................1.8754 to 1.8760 in.(47,635 to 47,650 mm)
Timing gear bearing
Outer diameter......................................................................................................................1.875 in.(47,62 mm)
Inner diameter ............................................................................................................................1.5 in.(38,1 mm)
Outer diameter of timing gear hub .............................................................1.4996 to 1.500 in.(38,090 to 38,100 mm)
Timing gear hub screw ............................................................................................................................ 7/16-20 UNF
Timing gear end float............................................................................................0.003 to 0.009 in.(0,06 to 0,23 mm)
Flat washer
Thickness .....................................................................................................0.163 to 0.169 in.(4,14 to 4,29 mm)
Outer diameter...........................................................................................................................2.323 in.(59 mm)
Inner diameter ...........................................................................................................................0.787 in.(20 mm)
GO TO NEXT PAGE
2-208
