TM 9--2815--247--34
0061 00--7
CYLINDER HEAD ASSEMBLY REPAIR -- CONTINUED
0061 00
Inspection -- Continued
6. Take cylinder bore (21) measurements at point A through E. Measure diameter approximately parallel to line of
valves.
7. Take measurements 90 degrees to first measurement at point A through E.
8. Average the measurements.
9. If head end average measurements exceed flange end average measurements, replace cylinder.
NOTE
Cylinder bores may taper slightly at head end, at room
temperature. The tapered section expands and is essen-
tially straight at operating temperature.
10. Compare the measurements taken 90 degrees apart. Each two measurements must be within 0.003 inch (0.0762
mm) of each other. If the difference exceeds 0.003 inch (0.0762 mm), the cylinder is out--of--round and must be
replaced.
11. Compare the measurements to limits in the following table. If cylinder is out of limits, replace cylinder.
POINT OF MEASUREMENT
SIZES AND FITS OF NEW PARTS
inches (mm)
WEAR LIM-
ITS
Standard bore diameter A through E
5.7510
(146.0754)
5.7530
(146.1262)
5.7600
(146.304)
0.0100 (0.25) oversize bore diameter A through
E
5.7610
(146.3294)
5.7630
(146.3802)
5.7700
(146.558)
0.0200 (0.50) oversize bore diameter A through
E
5.7710
(146.5834)
5.7730
(146.6342)
5.7800
(146.812)
0.0300 (0.762) oversize bore diameter A
through E
5.7810
(146.8374)
5.7830
(146.8882)
5.7900
(147.066)
0.0400 (1.01) oversize bore diameter A through
E
5.7910
(147.0914)
5.7930
(147.1422)
5.8000
(147.32)
Maximum out--of--round of cylinder bore
0.0020 (0.0508)
0.0030
(0.0762)
8.25 (209.55)
9.75 (247.65)
10.50 (266.70)
6.25 (158.75)
Figure 5
A
B
C
DE
2.25 (57.15)
21
BOTTOM
OF SKIRT
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