TM 5-3805-281-24-2
Crankshaft, Main Bearings, and Flywheel
CRANKSHAFT, MAIN BEARINGS, AND FLYWHEEL SPECIFICATIONS
ITEM
SPECIFICATION
WEAR LIMIT
Crankshaft Fillet Radius:
Thrust Journal (Tangential) ..........................................................................
3.56--4.06 mm (0.140--0.160 in.)
_____
Main Journals (Tangential) ...........................................................................
3.94--4.44 mm (0.156--0.175 in.)
_____
Rod Journals (Undercut) ..............................................................................
4.01--4.37 mm (0.158--0.172 in.)
_____
Engine Stroke ...............................................................................................
128.5mm (5.059 in.)
_____
Crankshaft End Play ....................................................................................
0.038--0.380 mm (0.0015--0.0150 in.)
_____
Crankshaft Main Bearing Journal O.D. ........................................................
95.201--95.227 mm (3.7480--3.7491 in.)
_____
Main Bearing Assembled I.D. W/Bearing ....................................................
95.270--95.320 mm (3.7508--3.7528 in.)
_____
Main Bearing-to-Journal Clearance .............................................................
0.030--0.107 mm (0.0012--0.0042 in.)
_____
Crankshaft Connecting Rod Journal O.D. ...................................................
76.149--76.175 mm (2.9980--2.9990 in.)
_____
Crankshaft Rear Oil Seal-to-Housing Maximum Runout .............................
0.152 mm (0.0060 in.)
_____
Journal Taper per 25.4 mm (1.00 in.) Length ..............................................
0.0025 mm (0.0001 in.)
_____
Journal Out-of-Roundness ...........................................................................
0.025 mm (0.0010 in.)
_____
Undersized Main Bearings Available ...........................................................
0.292, 0.552 mm (0.0115, 0.0217 in.)
_____
Undersized Rod Bearings Available ............................................................
0.292 mm (0.0115 in.)
_____
Oversize Thrust Washer Available ...............................................................
0.18 mm (0.007 in.)
_____
Main Bearing Cap Bore Specifications:
101.651--101.677 mm (4.0020--4.0030
I.D. without Bearing Inserts ..........................................................................
in.)
_____
Maximum Bore Diameter Taper ...................................................................
0.013 mm (0.0005 in.)
_____
Maximum Bore Diameter Variation ..............................................................
0.038 mm (0.0015 in.)
_____
Maximum Straightness Variation
(Any Bore-to-Adjacent Bores) ......................................................................
0.038 mm (0.0015 in.)
_____
Maximum Straightness Variation
(5 Center Bores-to-End Bores) ....................................................................
0.076 mm (0.0030 in.)
_____
Centerline of Bore-to-Top
Deck of Block ...............................................................................................
352.35--352.50 mm (13.872--13.878 in.)
_____
Main Bearing Cap Surface Width ................................................................
36.28--36.78 mm (1.428--1.448 in.)
_____
Continued on next page
RG,RG34710,1148
1923OCT971/3
