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Page Title:
Table I-I. Repair and Replacement Stanadards-Continued |
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 TM 10-3930-634-34
Table I-I. Repair and Replacement Stanadards-Continued
New Parts
Wear
Engine parts (standard size)
Minimum
Maximum
limits
0.0019"
0.010"
0.0010"
Clearance-Pin-to-Rod Bushing
PISTON RINGS1
0.060"
0.0460"
0.0200 "
Compression Rings Gap (Chrome ring)
Clearance-Ring-to- Groove
0,012"
0.0060"
0.0030"
Top (No. 1)
0.014"
0.0100"
0.0070"
No. 2
0.012 "
0.0070"
0.0045 "
No. 3 and 4 (21:1 Piston)
Oil Rings
0.044 "
0.0250 "
0,100"
Gap
0.0055"
0.008 "
0.0015 "
Clearance-Ring-to- Groove
CONNECTING RODS1
8.8010"
8.7990"
Length-Center-to-Center
2.7525"
2.7515"
Lower Bore-Diameter
1.6010"
1.6000 "
Upper Bore-Diameter
1.3765"
1.3760 "
Bushing Inside Diameter
0.0120"
0.0060"
Normal Rod Side Clearance
CRANKSHAFT 2
3.000"
2.9990"
Journal Diameter-Main Bearing
2.5000"
2.4990"
Journal Diameter-Connecting Rod
0.00025 "
Journal Out-of-Round
0.0030"
0.0005 "
Journal Taper
0.0020"
Runout at Journal-Total Indicator Reading 4-53
0.1220"
0.1205"
Thrust Washer Thickness
0.0180"
0.1100"
0.0040"
End Thrust Clearance
MAIN BEARINGS1
Bearing Inside Diameter
(Vertical Axis)
3.0030"
3.0020"
Bearing Thickness-90 from Parting Line
0.1230"
0.1250"
0.1245"
0.0040 "
0.0060"
Clearance-Bearing-to-Journal 1
0.0010"
CONNECTING ROD BEARINGS
Bearing Inside Diameter
(Vertical Axis)
2.5035"
2.5015"
Bearing Thickness-90 from parting line
0.1250"
0.1230"
0.1245"
0.0046 "
0.0060"
Clearance-Bearing-to-Crankshaft Journal
0.0015"
CYLINDER HEAD1
Cam Follower Bore
1.0626 "
1.0636 "
Exhaust Valve Seat Insert:
1.1600"
Counterbore Diameter
1.1590"
VALVE SEAT INSERTS1
1.1605"
Outside Diameter
1.1615"
3/64 "
5/64 "
5/64 "
Seat Width
0,0020"
0.0020 "
Valve Seat Runout
EXHAUST VALVES'
0.2488 "
Stem Diameter
0.2480"
See guide clear-
ance
VALVE GUIDES1
0.0400"
0.0100"
Distance Below Top of Head (Plain Guide)
0.2200 "
Distance Below Top of Head (Guide Machined for Oil Seal)
0.1900"
0.2515"
0.2505 "
Diameter-Inside
Clearance-Stem-to-Guide:
0.0017"
0.0035 "
Current
ROCKER ARMS AND SHAFTS1
0.8740"
0.8735 "
Rocker Arm Shaft Diameter
Injector Rocker Arm Bushing
0.8760 "
Inside Diameter
0.8750"
0.8753 "
0.8763"
Diameter of Bore in Exhaust Valve Rocker Arm for Rocker Arm Shaft
0.0025 "
0.0010"
0,0040"
Clearance-Shaft-to-Injector Rocker Arm Bushing
0.0028"
0.0040"
0.0013 "
Clearance-Shaft-to-Exhaust Valve Rocker Arm Bore
CAM FOLLOWERS1
1.0610"
Diameter
1.0600 "
0,0060"
0.0036"
Clearance-Follower-to-Head-Current
0.0016"
0.5685 "
Width of Roller Slot
0.5635 "
1-4
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