TM 5-3805-248-23-2
HEAD ASSEMBLY OVERHAUL - CONTINUED
0343 00
REPAIR
WARNING
Wear safety goggles and respirator when grinding. Failure to follow this procedure may result in injury.
NOTE
Cylinder head may appear streaked or discolored after grinding. This appearance is normal and does not
indicate any defect in either the material or reconditioning procedure. New cylinder heads from the factory
may also have the same appearance but are completely satisfactory for use.
1.
Use grinding stone or equivalent to grind smooth all gas and coolant erosion on combustion surface of cylinder head.
2.
Remove warpage of combustion surface. Use milling machine: table traverse 600 in./min.; down feed 0.001 in./cycle.
Make 0.010 in. (0.254 mm) rough cut and 0.005 in. (0.127 mm) finish cut.
3.
Check thickness of cylinder head. Refer to Inspection in this work package.
4.
Check flatness of cylinder head. Refer to Inspection in this work package.
5.
Install valves and springs (WP 0263 00).
6.
Install head assembly (WP 0259 00).
END OF WORK PACKAGE
0343 00-5/-6 Blank
