Repair
334127D
13
6. Pull the intake seat (15) and seal (16) out the bot-
tom of the intake housing (13).
NOTE:
If the seat (15) is difficult to remove, insert a
brass rod through the top of the housing (13) and drive
the seat out with a hammer.
7. Firmly tap the piston rod with a rubber mallet until
the valve assembly comes free. Take care not to
drop the valve assembly (V) as it comes free.
8. To repair the piston, cylinder, seals, and rods, see
Repair the Piston
on page
14
.
9. Slide the intake housing (13) onto the priming piston
rod (17), making certain that the smooth surface of
the valve stop (VS) is facing down toward the pump
intake. Screw the housing (13) onto the cylinder (8).
See Figure 7.
10. Lubricate the priming piston rod (17), then slide the
pre-assembled intake valve (V) into the rod, making
certain that the packing nut (31) goes on the rod
first. Push the valve assembly up the rod as far as
possible. Use a rubber mallet on the priming piston
rod (17) to drive the valve assembly up to the stop
(VS).
11. The intake seat (15) is reversible. Push it into the
housing (13) until it seats securely. Lubricate the
seal (16) and install it in the bevel around the bottom
of the seat.
12. Screw the intake cylinder (8) into the intake housing
(13). Using a pipe wrench on the hex of the cylinder
(8), torque the cylinder to 385-400 ft-lb (522-542
N•m).
13. Replace the priming piston. See
Replace the Prim-
ing Piston
on page
11
.
14. Reconnect the displacement pump to the air motor
as explained in the instructions for the system you
are using.
F
IG
. 6: Remove Valve Assembly
F
IG
. 7: Replace Valve Assembly
WLD
9
WLD
96
9
