Table 1. Engine Repair and Replacement Standards - Continued .
Desired
Maximum
Maximum
Manufacturer's
clearance
allowable
allowable
dimensions and
tolerance in
wear
clearance
inches
Minimum
Maximum
Minimum
Maximum
Pistons Pins
Length ..................................................................- 4.524........... 4.539
Diameter ............................................................... 1.7498......... 1.7500 ...................... ..................... ................... ............. 0.003
Desired fit-light push bushing hole
dia. finish ......................................................... 1.7503 ........ 1.7505 ...................... ..................... ................... ............. 0.001
Pin clearance in bushing.................................................. .................... ............ 0.0003 ......... 0.0007 .................. ............. 0.001
Crankshaft
Main bearing journal diameter ................................3.749........... 3.750
Crankpin diameter ..................................................3.499........... 3.500
End play.......................................................................... .................... .............. 0.005 ........... 0.008
Main Bearings
Bearing bore ...........................................................3.999........... 4.000
Shell thickness ..................................................... 0.1232......... 0.1237
Clearance ....................................................................... .................... ........... 0.0016 ......... 0.0046 .................. ............. 0.001
Connecting Rods:
Length, center-to-center ........................................ 10.498......... 10.502
Bushing hole diameter .......................................... 1.8745......... 1.8755
Bearing hole diameter ........................................... 3.6925......... 3.6935
Bearing thickness ................................................. 0.0950......... 0.0955
Clearance ....................................................................... .................... ............ 0.0015 ......... 0.0045 .................. ........... 0.0055
Width at bearing end ..............................................2.426........... 2.428
Camshaft ............................................................................ .................... .............. 0.008 ............ 0.012
Bearing journals diameter
Bearing journals ................................................. . 2.2475......... 2.2480 ....................... ..................... ......... 0.0015
Cam lift .......................................................................... ........... 0.391
Bushings diameter . ............................................. 2.2495......... 2.2500 ....................... ..................... ......... 0.0020
Clearance ....................................................................... .................... ............ 0.0015 .......... 0.0025 .................. ............. 0.004
End play ......................................................................... .................... .............. 0.005 ............ 0.009
Tappets
Tappet diameter ................................................... 0.6082......... 0.6087 ...................... ..................... ......... 0.0015
Tappet hole diameter clearance....................................... .................... .......... 0.0002 . ........... 0019 . ................... ............. 0.001
Tappet guide hole diameter .................................. 0.6089 ........ 0.6101
Oil Pemp
Clearance between gears and pump body ....................... .................... ....................... ..................... ................... ......... 0.001 to
0.003
Clearance between gears and cover.................................... .................... ....................... ..................... ................... ....... 0.0015 to
0.006
AGO 8456A
13
