TM 5-2420-230-24-2
A/C Cylinder Head (SS 191 Model) (012-101)
B3.9 and B5.9 Series Engines
Page 12-30
Section 12 - Compressed Air System - Group 12
Inspect the unloader seal bore for scoring or pitting.
Replace the cylinder head if damaged.
Assemble (012-101-025)
Turn the cylinder head bottom side up, and install it in a
soft-jawed vise.
Install the following parts.
a. New washer (2)
b. Inlet valve seat (13)
c. Inlet valve (10)
d. Inlet valve spring (11).
Tighten the cage (12).
[80 ft-lb]
Install the following parts:
a. New washer (2)
L-1234