TM 55-1925-286-13&P
0024 00
2. Remove the suction valve (figure 2, item 2) from the head assembly (figure 2, item 5).
3. Remove the six bolts (figure 2, item 6) from the diaphragm cover plate (figure 2, item 7). Remove the cover
plate and the diaphragm (figure 2, item 8). Discard the diaphragm.
4. Remove the unloader body (figure 2, item 9), diaphragm disc (figure 2, item 10), unloader piston assembly
(figure 2, item 11), and spacer ring (figure 2, item 12) from the valve cover plate (figure 2, item 3). Discard the
spacer ring.
5. Remove the four bolts (figure 2, item 13) that secure the discharge valve's valve cover plate (figure 2,
item 14) to the head assembly (figure 2, item 5). Remove the valve cover plate and gasket
(figure 2, item 15). Set aside the valve cover plate and discard the gasket.
6. Remove the discharge valve (figure 2, item 16) from the head assembly (figure 2, item 5).
7. Remove the six bolts (figure 2, item 17) that secure the valve cover plate (figure 2, item 18) to the head
assembly (figure 2, item 5). Remove the valve cover plate and gasket (figure 2, item 19). Set aside the valve
cover plate and discard the gasket.
8. Remove the six bolts (figure 2, item 20) from the diaphragm cover plate (figure 2, item 21). Remove the
cover plate and diaphragm (figure 2, item 22). Discard the diaphragm.
9. Remove the unloader body (figure 2, item 23), diaphragm disc (figure 2, item 24), unloader piston assembly
(figure 2, item 25), and gasket (figure 2, item 26) from the valve cover plate (figure 2, item 18). Discard the
gasket.
10. Remove the suction valves (figure 2, items 27 and 28) from the head assembly (figure 2, item 5).
11. Remove the six bolts (figure 2, item 29) that secure the valve cover plate (figure 2, item 30) to the head
assembly (figure 2, item 5). Remove the valve cover plate and gasket (figure 2, item 31). Set aside the valve
cover plate and discard the gasket.
12. Remove the discharge valves (figure 2, items 32 and 33) from the head assembly (figure 2, item 5).
CLEANING AND INSPECTION
WARNING
Do not allow compressor oil or cleaning solvents to come in contact with unpro-
tected skin or eyes. Prolonged skin contact can cause illness or injury. Eye con-
tact can cause serious injury. Always wear chemical protective gloves and goggles
when handling compressor oil and cleaning solvents. Failure to follow these pre-
cautions can result in illness or serious injury.
1. Thoroughly clean all suction and discharge valves and valve cover plates in cleaning solvent. Allow parts to
air dry.
2. Inspect the suction and discharge valves for signs of burning, pitting, scarring or other damage. Replace any
burned, pitted, or scarred suction valves.
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