TM-5-4310-389-14
NOTE
The valves of the 4th stage are located in the valve head of the 4th stage. The inlet
valve includes a valve disc and a Wavy washer. The inlet valve seat is machined
directly into the cylinder liner of the 4th stage piston. The discharge valve includes the
valve seat, valve disc, valve spring, and stroke limiter.
The valve head includes the bottom section and the upper section. The valve head is
secured by means of valve head screw connecting the cylinder.
d.
Head Removal (1st Stage).
1.
Loosen six bolts to remove fan guard.
2.
Remove 1st stage head oiler and pressure line.
3.
Remove cooling fan guard (see paragraph 4-9, a and b).
4.
Remove the four head nuts and remove head and head gasket.
WARNING
Valve pieces may fall out when removing the 4th stage head.
e.
Head Removal (2nd, 3rd, and 4th Stage).
1.
Remove intake and exhaust lines.
2.
Remove the six allen head bolts.
3.
Remove the head.
f. Head Reassembly (1st Stage).
1.
Place new gasket on cylinder and install the head.
2.
Tighten the four head nuts in accordance with Appendix F and in torque sequence as listed in figure 4-7.
g.
Head Reassembly (2nd, 3rd, and 4th Stages).
1.
Place head on cylinder and install allen head nuts.
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