TM-5-4310-389-14
6.
Install the four nuts and washers. Torque nuts; refer to Appendix F.
7.
Reinstall head assembly (refer to paragraph 4-8).
c.
Removal / Installation 4th Stage Cylinder and Piston.
1.
Remove the three oil pump regulator fittings.
2.
Remove the four cylinder retaining nuts and washers.
3.
Remove the entire cylinder from the float piston, being careful not to drop the 4th stage piston (place
thumb over the piston hole to hold in place). Remove 0-ring and discard.
NOTE
Fourth stage piston and cylinder sleeve are replaced as a matched set.
4.
Remove floating piston by removing the circlips and piston pin.
5.
Reinstall float piston and piston pin onto connecting rod using new circlips.
6.
Install new 0-ring on the cylinder sleeve.
d.
Piston Rings (1st, 2nd and 3rd Stage Pistons).
1.
Remove rings from piston with a ring expander.
2.
Clean rings and pistons.
3.
Replace rings as required.
4.
Install piston ring into the cylinder about 3/4-1 inch (20 mm) and square with piston head. Measure ring
end gap. Refer to table 4-8.
5.
Measure the piston ring groove clearance. Refer to table 4-8.
6.
Install piston rings onto piston using a ring expander. Refer to figure 4-1 for correct ring location. Stagger
ring gaps equally.
INSPECT
a. Measuring Cylinders.
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