Inlet And Outlet Valve - WAGNER ProSpray 3.29 Owner's Manual

PS 3.29 / 3.31
11.2

INLeT ANd ouTLeT VALVe

1. Remove the four screws in the front cover and then remove
the front cover.
Danger of crushing - do not reach with the fingers
or tool between the moving parts.
2. Turn the pressure control knob to minimum pressure. The
DESC screen should say "PRIME".
3. Press the #1 key on the DESC control panel. The "CREEP
MODE" screen will now appear.
4. Slowly turn the pressure control knob clockwise to increase
the pressure. The crankshaft/slider assembly will begin to
move very slowly.
5. When it reaches the bottom, dead-center of its stroke, turn
the pressure control knob back to minimum pressure. The
crankshaft/slider assembly should stop.
6. Unplug the power plug from the outlet.
7. Pull off clamp on suction tube and remove return hose.
8. Unscrew the connection hose (Fig. 12, item 1) from the
high-pressure filter.
9. Turn the knob on the side of the cart clockwise to unlock
the cart. Tilt the cart backwards until it locks into place.
10. Loosen and unscrew inlet valve housing (2) from the lower
housing (3) with light blows from a hammer or unscrew
with an adjusting wrench.
11. Remove bearing ring (4), O-ring (5), O-ring (6), inlet valve
seat (7), inlet valve ball (8) and upper ball guide (9).
12. Clean all the parts with the corresponding cleaning agent.
Check the inlet valve housing (2), inlet valve seat (7)
and inlet valve ball (8) for wear and replace the parts if
necessary. If the worn inlet valve seat (7) is unused on one
side, install it the other way around.
13. Carry out installation in the reverse order.
Lubricate O-ring (5) with machine grease and ensure
proper seating in the inlet valve housing (2).
3
9
8
7
6
14. Unscrew lower housing (Fig. 13, Item 10) with adjusting
wrench while holding the upper housing (11) securely
with a second adjusting wrench.
15. Remove bearing ring (13) and O-ring (12).
16. Screw out outlet valve housing (14) from the piston (15)
with 3/8 inch hexagon socket head wrench.
17. Remove the upper seal (16), upper ball guide (17), outlet
valve ball (18), washer (19) and outlet valve seating (20).
18. Clean all the parts with the corresponding cleaning agent.
Check outlet valve housing (14), outlet valve seat (20),
outlet valve ball (18) and upper ball guide (17) for wear
and replace parts if necessary. If the worn outlet valve seat
(20) is unused on one side, install it the other way around.
19. Carry out installation in the reverse order.
Lubricate O-ring (12) with machine grease and ensure
proper seating in the lower housing (10).
11
16
17
18
19
20
14
repairs at the unit
1
5
4
2
15
12
13
10
53