TM 5-2420-230-24-2
Cylinder Head Cracks - Reuse Guidelines (2-08)
Cylinder Head - Group 2
Page 2-12
B Series Shop Manual
Cylinder Head Cracks - Reuse Guide-
lines (2-08)
These guidelines apply only to cracks extending through
the valve seats.
The reuse guidelines for a cylinder head with a crack
extending from the injector bore to the valve seat is as
follows:
If the crack does not extend into the valve seat, the head
is reusable.
If the crack extends into or through the valve seat, the
head must be repaired by installing a valve seat insert per
the Alternative Repair Manual, Bulletin No. 3810234.
Valve Spring Inspection (2-09)
Inspect the Valve Springs.
Measure the valve spring.
Limits
Approx. Free Length (L) : 55.63 mm [2.190 in.]
Maximum Inclination: 1.0 mm [0.039 in.]