Part
Valve:
(140F oil temperature) ...........Exhaust 0.027 inches
Adjusting screw nut ................. 70 foot-pounds
Intake 0.014 inches
Fuel inlet and drain connections. .20/25 foot-pounds
(b) Valves (crane engine).
Injector cup ............................. 45 foot-pounds
(70'F oil temperature) ..............Exhaust 0.027 inches
Vibration damper capscrews ... 35/45 foot-pounds
Intake 0.017 inches
Crankshaft flange .................... 130/140 foot-pounds
(140'F oil temperature) ...........Exhaust 0.025 inches
Cross-head adjusting screw nuts 25/30 foot-pounds
Intake 0.015 inches
Tappet guide screws ............... 95/115 inch-pounds
(c) Alternator regulator adjustments.
Oil pan capscrew ........... 25/30 foot-pounds
Cutout relay air gap .................0.048 in.
Water header cover plate
Contact points .........................0.035 in.
capscrew .30/35 foot-pounds
Voltagp regulator air gap .........0.084 in.
Lubricating oil filter center
Cutout relay closing voltage ....26 volts
capscrews ..................... 25/30 foot-pounds
Voltage regulator opening
Tappet guide plate capscrews . 18/20 foot-pounds
voltage ........................... 29.2 volts
Gear housing capscrews ........ 30/35 foot-pounds
Current regulator maximum
Vibration damper and crankshaft
amperage ......................40 amperes
pulley ............................ 200/205 foot-pounds
(4) Repair and replacement standards. Table 1-1 lists
Injector cup .................... 50/55 foot-pounds
manufacturer's sizes, tolerances, desired clearances,
Orifice plug ..................... 6/8 inch-pounds
and maximum allowable wear and clearances for the
(3) Adjustment Data
carrier and crane engines. Manufacturer's Maximum
(a) Valves (carrier engine)
dimensions and Desired allowable tolerances clearance
(70'F oil temperature) ............. Exhaust 0.029 inches
wear and in inches clearances
Intake 0.016 inches
Table 1-1. Repair and Replacement Standards.
Manufacturer's
Desired
Maximum
dimensions
clearance
allowable
Component
and tolerance
wear and
in inches
clearance
Minimum
Maximum Minimum
Maximum
CRANE ENGINE:
Cylinder block:
Height from center of main bearing
bore to top of block
15.122
15.124
15.114
Maximum amount removed in resurfacing
0.010
Liner counterbore depth
0.309
30.3105
0.3105
Maximum depth after repair
0.4023
Liner protrusion above block
0.0045
0.00675
0.0045
Main bearing cap fit in block
-0.002
-0.004
0.001
Main bearing bore
4.124
4.125
4.1255
Camshaft bushing I.D.
1.8745
1.8765
1.878
Cylinder liners I.D.
4.125
4.126
4.130
Camshaft end clearance
0.007
0.011
0.015
Camshaft thrust bushings I.D.
1.750
1.761
1.753
Cam thrust bushing
Out of round at top one inch only
Note. Liner may contact block if it does not
force liner out-of-round
Interference fit, liner and block0.0005-0.0045-0.005
Crankshaft:
Main journals
3.874
3.875
3.872
Rod journals
2.624
2.625
2.622
Fillet radii
O ;41
0.164
0.141
Main bearings
Shell thickness
0.1231
0.1286
0.1216
Journal clearance
0.0018
0.0048
0.0068
End clearance
0.004
0.015
0.022
Connecting rod bearings
Shell thickness
0.07225
0.07276
0.07100
Journal clearance
0.0020
0.0045
0.008
Connecting rod:
Center to center
9.498
9.500
9.498
1-2
