TM 5-3895-373-34
2.17
DIESEL ENGINE REPAIR - Continued.
D.
REPAIR - Continued.
MAIN BEARING THIMBLES
Outside diameter of thimble shank...................................................................... 0.7475 to 0.7485 in.(18,99 to 19,01)
Engine block thimble bore diameter ...............................................................0.750 to 0.7513 in.(19,05 to 19,08 mm)
Thimble running clearance in bore ...................................................................0.0015 to 0.0038 in.(0,04 to 0,10 mm)
ROCKER SHAFT ASSEMBLY
Outside diameter of shaft .............................................................................0.7485 to 0.7495 in.(19,01 to 19,04 mm)
ROCKER ARMS
Inside diameter of arm bore .........................................................................0.7505 to 0.7520 in.(19,06 to 19,10 mm)
Lever clearance on rocker shaft assembly.........................................................0.001 to 0.0035 in.(0,03 to 0,09 mm)
ROCKER ARMS WITH REPLACEABLE BUSHINGS
Arm parent bore .............................................................................................0.875 to 0.8762 in.(22,23 to 22,26 mm)
Outside diameter of bushing ..........................................................................0.877 to 0.8785 in.(22,28 to 22,31 mm)
Interference fit of bushing in bore.....................................................................0.0008 to 0.0035 in.(0,02 to 0,09 mm)
Finish machine bushing bore .........................................................................0.7505 to 0.752 in.(19,06 to 19,10 mm)
Clearance of bushing on shaft............................................................................0.001 to 0.0035 in.(0,03 to 0,09 mm)
VALVE CLEARANCES
Clearances between valve stem and rocker arm ................................................................... 0.012 in.(0,30 mm) cold
CAMSHAFT GEAR
Inside diameter of gear boss ............................................................................1.375 to 1.376 in.(34,93 to 34,96 mm)
Outside diameter of camshaft hub ...............................................................1.3741 to 1.3747 in.(34,90 to 34,91 mm)
Fit of gear on camshaft hub .................................................................... -0.0009 to +0.0013 in.(-0,002 to +0,03 mm)
FUEL INJECTION PUMP GEAR
Inside diameter of gear bore ............................................................................1.750 to 1.751 in.(44,45 to 44,47 mm)
Fuel injection pump hub diameter ..................................................................1.748 to 1.7488 in.(44,40 to 44,42 mm)
IDLER GEAR AND HUB - STANDARD
Bore diameter of gear bushing (requires boring in situ) ...............................1.9998 to 2.0007 in.(50,79 to 50,82 mm)
Outside diameter of gear hub.......................................................................1.9610 to 1.9975 in.(49,80 to 50,74 mm)
Running clearance of gear on hub ...................................................................0.0023 to 0.0047 in.(0,06 to 0,12 mm)
Idler gear width including bushings ..............................................................1.1865 to 1.1875 in.(30,14 to 30,16 mm)
Hub width......................................................................................................1.1915 to 1.1945 in.(30,26 to 30,33 mm)
Idler gear end float ...............................................................................................0.004 to 0.008 in.(0,10 to 0,20 mm)
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