Graco HydroShield WABH00 Instructions - Parts Manual page 105

14. With the air cylinder (319) up, place the air cover
(320) onto the air cylinder (319). Make sure that
o-ring (318) is in place on the cover. Grease the
o-ring.
15. Align the air port hole on the air cover with the
front of the pump. The hole should align between
the fluid port fittings on the fluid cover (311).
16. Spin the tie rod screws (312), lock washer (304),
and plain washer (322) into the air cover (320).
Tighten in a cross pattern only until snug.
17. Lay the pump on its side to tighten the tie rod
screws (312) in a cross pattern. Torque to 160
in-lb (18 N•m).
18. Attach the air valve assembly (323-326) to the air
cover (320). Tighten so that the air fitting faces
to the left.
19. Grease the o-ring at the base of the linear sensor
(321). Insert the sensor (321) into the top of the
air cover (320). Screw until tight.
Figure 49 Align Covers with Weep Holes
3A8492A
Remove Remove the Remove the the Merkur Merkur Merkur Pump
Many Merkur AA fluid pump (75) maintenance
and repair steps are possible with the pump in the
cabinet. See your Merkur manual for details. Use
this procedure to remove the entire Merkur AA fluid
pump (75) from the isolation cabinet for service.
1. Prepare the isolation system for service. Follow
the steps under Prepare the Isolation System for
Service, page 90.
2. Use a flat blade screwdriver to open the isolation
cabinet door.
3. Slide the electrostatic shield (82) up to remove.
4. Slide the electrostatic shield (12) to the left to
remove.
5. Disconnect the air supply line from the Merkur
air motor.
6. Disconnect the fluid hose (84) from the inlet of
the inlet fittings on the Merkur AA fluid pump (75).
7. Disconnect the fluid hose (116) from the outlet
fittings of the fluid filter (131).
8. Loosen four nuts (134) holding the pump bracket
(21) in the cabinet. Lift the pump and remove to
a workbench.
Reinstall the Reinstall Reinstall the Merkur the Merkur Pump Merkur
1. With the nuts (134) loosely installed on the
captured mounting bolts (133), install the Merkur
AA fluid pump (75) with pump bracket (21) by
sliding the slots in the bracket over bolts (133).
Tighten nuts (124) to secure).
2. Connect the fluid hose (116) to the fittings on the
fluid filter (131).
3. Connect the fluid hose to the inlet fittings on the
Merkur AA fluid pump (75).
4. Connect the air supply to the Merkur air motor.
5. Reinstall electrostatic shields (12 and 82) inside
the cabinet.
Repair
Pump from Pump from the from the Cabinet the Cabinet Cabinet
Pump in in in the Pump the Cabinet the Cabinet Cabinet
105