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 TM 55-1905-220-14-5
3-89.1. CYLINDER HEAD-MAINTENANCE INSTRUCTIONS (Cont).
LOCATION
ITEM
ACTION
REMARKS
INSPECTION AND REPAIR (Cont)
Maximum Longitudinal Warpage
Maximum Transverse Warpage
INCHES
CENTIMETER
INCHES
CENTIMETER
.010
.025
.004
.010
b. Use the measurements
obtained and the limits
given in the table as a
guide to determine the
adviseability of reinstall-
ing the head on the engine
or of refacing it. The number
of times a cylinder head may
be refaced will depend upon
the amount of stock previously
removed.
c. If the cylinder head is to be refaced,
refer to Direct Support Maintenance.
CAUTION
When a cylinder head has been refaced, critical dimensions such as the protrusion of valve
seat inserts, exhaust valves, injector tubes and injector spray tips must be checked and
corrected. The push rods must also be adjusted to prevent the exhaust valves from striking
the pistons after the cylinder head is re-installed in the engine.
3-1461
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