TM 5-3820-233-35/2
Power Take-Off:
Clutch drive shaft nut ......................... 1 3/4-10 .................................... 225-230
ft-lb
Clutch driving ring bolt ....................... 1/2-13 ....................................... 71-75
ft lb
Clutch housing bolt ............................ 7/16-14 x 1 1/4 ......................... 46-50
ft lb
Screen Vibrator Unit
Backplate capscrews.......................... ................................................. 25
ft-lb
l. Repair and Replacement Standards. Tables 1 and 2 list manufacturer's sizes, tolerances, desired clearances, and
maximum allowable wear and clearances.
Table 1. Engine Repair and Replacement Standards
Manufacturer's
Maximum
dimensions and
Desired
allowable
tolerances in inches
clearance
wear and
Components
Minimum
Maximum
Minimum
Maximum
clearance
Cylinder Head:
------
------
------
------
0.0040
Flatness (transverse)
------
------
------
------
0.0080
Flatness (longitudinally)
3.5560
3.5680
------
------
3.5360
Distance between top deck and fire deck
0.03125
flush
------
------
------
Water Nozzles
Cam Follower Boxes
------
------
1.0620
1.0630
1.0650
Exhaust Valve Seat Inserts:
Seat width (30)
0.0625
0.09375
------
------
0.09375
Valve seat runout
------
0.0020
------
------
0.0020
Exhaust Valves:
Stem diameter
0.3417
0.3425
------
------
0.3406
Valve head to cylinder head
0.0020
0.0280
------
------
------
protrusion
Valve Guides:
Height above cylinder head
1.59375
1.59375
------
------
1.59375
Diameter (inside)
0.3445
0.3445
------
------
0.3465
Clearance stem to guide
------
------
0.0020
0.0038
0.0060
Rocker Arms and Shafts:
Rocker shaft diameter
------
------
------
Rocker arm shaft bushing inside diameter
0.8760
------
------
------
Clearance-shaft to bushing
------
------
0.0010
0.0025
0.0040
Cam Followers:
Diameter
1.0600
1.0610
------
------
------
Clearance-follower to head
------
------
0.0010
0.0030
0.0060
Cam Follower Rollers and Pins:
Clearance-pin to bushing
------
------
0.0013
0.0021
0.0100
Side clearance-roller in follower
------
------
0.0150
0.0230
0.0230
Crankshaft:
Journal diameter-main bearing
3.499
3.500
------
------
------
Journal diameter-connecting rod
2.749
2.750
------
------
------
Journal out of-round
------
0.00025
------
------
0.0010
Journal taper
------
0.0005
------
------
0.0015
Runout on journals:
No. 2 and No. 5 journals
------
0.002
------
------
------
No. 3 journal
------
0.004
------
------
------
Thrust washer, thickness
0.1205
0.1220
------
------
------
End thrust clearance (end play)
------
------
0.0040
0.0110
0.0180
Main Bearings:
Bearing inside diameter (vertical axis)
3.5014
3.5034
------
------
------
Clearances-bearing to journal
------
------
0.0014
0.0044
0.0060
Bearing thickness-90from parting line
0.1548
0.1553
------
------
0.1530
(min.)
1-5
