TM-5-2815-241-34-P
ENGINE, DIESEL NTC-290
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT, MAINTENANCE (INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST)
MARCH 1987
TM-5-2815-241-34-P - Page 210 of 738
TM 5-2815-241-34&P
CYLINDER HEAD - CONTINUED
ACTION
LOCATION
ITEM
REMARKS
INSPECTION - CONTINUED
WARNING
Safety goggles must be worn to prevent eye injury caused by flying steel chips.
20.
Valve (1)
a.
Using a wire brush, clean valves and
polish with crocus cloth.
b.
Inspect valve head (2) for cups,
cracks, pits.
If cups, cracks, or pits are found,
discard valve.
c.
Using 0- to 1-inch micrometer, check
valve head rim thickness (3).
If thickness Is less than 0.105 Inch
(2.87 mm), discard valve.
d.
Using 0- to 1-inch micrometer (4),
check valve stem diameter (5).
If valve stem diameter (5) is less
than 0.449 Inch (11.41 mm), dis-
card valve.
e.
Check collet recesses (6) for wear.
If new collet will not fit in recesses
securely, discard valve.
TA 242461
2-188
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