TM 5-3895-346-14
SPECIFICATIONS
ENGINE OVERHAUL
SPECIFICATIONS
Specifications, clearances, and wear limits are listed below. It should be specifically noted that the clearances
apply only when all new parts are used at the point where the various specifications apply. This also applies to
references within the text of the manual. The column entitled Limits in this chart lists the amount of wear or
increase in clearance which can be tolerated in used engine parts and still ensure satisfactory performance. It
should be emphasized that the figures given as limits must be qualified by the judgement of personnel respon-
sible for installing new parts. These wear limits are, in general, listed only for the parts more frequently re-
placed in engine overhaul work. For additional information, refer to the text.
TABLE OF SPECIFICATIONS, NEW CLEARANCES, AND WEAR LIMITS
These limits also apply to oversize and undersize parts
MINIMUM
MAXIMUM
LIMITS
ENGINE PARTS (Standard Size, New)
(inch)
(inch)
(inch)
Cylinder Block
Block bore:
Diameter (top) ............................................................................
4.5195
4.5215
4.5235
Diameter (center) ........................................................................
4.4865
4.4880
4.4900
Diameter (bottom) .......................................................................
4.3565
4.3575
4.3595
Out-of -round...............................................................................
0.0015
0.0020
Taper .........................................................................................
0.0015
0.0020
Cylinder liner counterbore:
Diameter ....................................................................................
4.8200
4.8350
Depth ..........................................................................................
0.3000
0.3020
Main bearing bore:
Inside diameter............................................................................
3.2510
3.2520
Cam and balance shaft bore (oversize cam bearings):
End .............................................................................................
2.3850
2.3860
Intermediate ................................................................................
2.3750
2.3760
Center .........................................................................................
2.3650
2.3660
Top surface of block:
Flatness--transverse (all) .............................................................
0.0030
Flatness--longitudinal ..................................................................
0.0070
Depth of counterbores (top surface):
Cylinder head seal strip groove ...................................................
0.0970
0.1070
Waterholes ..................................................................................
0.1090
0.1150
Oilholes ......................................................................................
0.0920
0.0980
Cylinder Liner
Outside diameter (upper seal ring surface) ..................................
4.4850
4.4860
Outside diameter (lower seal ring surface)...................................
4.3550
4.3560
Inside diameter............................................................................
3.8752
3.8767
Out-of-round (inside diameter ......................................................
0.0020
0.0030
Taper (inside di ameter) ..............................................................
0.0010
0.0020
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