TM 5-3810-289-34
Table 2-2. Reference Data-Continued
Manufacturer's
Desired
Maximum
dimensions
clearance
allowable
Component points of measurement
and tolerance
wear and
in inches
clearance
Minimum
Maximum Minimum
Maximum
Connecting Rod Dimensions:
Crank pin Bore ..........................................................
2.7725
2.7730
Out of Round ..........................................................
0.0015
Piston Pin Bushing ...................................................
1.5000
1.5005
1.5015
Connecting Rod Twist:
Without Bushing ........................................................
0.020
With Bushing ..........................................................
0.010
Connecting Rod Length.....................................................
9.498
9.500
Bore Misalinement ..........................................................
0.001
Piston and Piston Rings:
Piston Ring Gap (new or reconditioned liner)
Pt. No. 68788 .................................................
0.013
0.023
Pt. No. 109410 ................................................
0.013
0.023
Pt. No. 144980 ................................................
0.013
0.023
Pt. No. 126480 ................................................
0.013
0.025
Pt. No. 146140 ................................................
0.015
0.055
Standard Piston Skirt Diameter (700 F)
130360, 130500, 11738, 144840, 149200,
168430, compression ratio
16.3:1 Gage Point BC .......................................
4.1180
4.1190
4.1150
Piston Pin Bore ........................................................
1.4988
1.4990
1.5000
Piston Pin Diameter ..................................................
1.4988
1.4990
1.4978
Pistons and Rings Oversize .....................................
0.020
0.030
0.040
e. Camshaft.
Camshaft Journal Diameter:
No. 1 Journal only..............................................
1.747
1.748
1.746
All Other Journals ..............................................
1.872
1.873
1.871
Camshaft Lobe Lift
f. Injection Spec BTC 64, A r 19. Valve Overlap 880.
Exhaust Opens BBC 620. Intake Opens BTC 440.
Exhaust Closes ATC 440. Intake closes ABC 400.
Valve Lobe Lift 0.251 in.
Injection Lobe Lift 0.112 in.
g. Gear Cover.
Accessory Drive Bushing I.D.:
139810 Std ........................................................
1.314
1.319
1.3205
139811 0.010 in.................................................
1.304
1.309
1.3105
139812 0.020 in.................................................
1.294
1.299
1.3005
h. Cylinder Head.
Crosshead Guide Dimensions:
Solid type (OD.).................................................
0.3750
0.3755
0.3740
Head Height ......................................................
5.000
5.010
4.970
i. Valve Seats and Insert
Valve Seat Insert Run-Out.........................................
0.002
Oversize Diameter Std. Depth Std. Insert O.D.
1.4300/11.4305. Cylinder Head I.D. 1.427/1.428.
Insert Thickness 0.156/0.161.
I. Valve Crossheads.
Crosshead Dimensions:
Solid Stem .........................................................
0.3708
0.3713
0.370
k. Valves, Guides and Springs.
Valves Stem Dimensions:
Four-valve Head ...............................................
0.3400
0.3410
0.3390
Valve Guide I.D.:
Four-valve Head ................................................
0.3425
0.3432
0.3442
Valve Guide Protrusion:
Four-valve Head ................................................
1.240
1.260
2-6
