Disassemble the Pump
If not yet done, follow steps in
Disconnect the Air Motor, page 11
. Note: Be
careful not to scratch the displacement rod. Carry
to the bench for service.
1. Use a pick to move the o-rings (208) to the center
of the inlet seat pin (214). Slide the pin halfway
out, remove the o-rings (108), then slide the pin
the rest of the way out.
2. Use a screwdriver in the slot to remove the
inlet valve assembly. Remove the retaining pin
(212) and ball (213). Push the seat (210) out
the bottom of the inlet housing (209). Remove
o-rings (211 and 216). Clean and inspect the
parts.
Figure 7
3. Pull the displacement rod (202) out of the top of
the cylinder (201) a few inches, but do not remove
all the way. Then, remove the cartridge (215).
Remove o-rings (216, 220). Use a screwdriver
to push the u-cup (217) out of the center of the
cartridge. Be careful not to damage the lips.
Figure 8
3A2977K
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