Graco MERKUR ES 24F150, Instructions - Parts Manual

Page: 18 / 44

Repair
18 3A0732P
Repair Air Valve
Replace Complete Air Valve
1. Stop the pump. Follow Pressure Relief Procedure ,
page 10.
2. Disconnect the air line to the motor.
3. See F
IG
. 14 on page 23. Remove four screws (211).
Remove the air valve (214) and gasket (209*

).
4. To repair the air valve, go to Disassemble the Air
Valve, page 18. To install a replacement air valve,
continue with step 5.
5. Align the new air valve gasket (209*

) on the mani-
fold, then attach the air valve (214). Torque screws
(211) to 95-105 in-lb (11-12 N•m).
6. Reconnect the air line to the motor.
Replace Seals or Rebuild Air Valve
NOTE: Air Valve Seal Kits are available. See page 35.
Parts are marked with an †.
Air Valve Repair Kits are available. See page 35. Parts
are marked with an

.
Air Valve End Cap Kits are available. See page 35.
Parts are marked with an

.
Disassemble the Air Valve
1. Perform steps 1-3 under Replace Complete Air
Valve, page 18.
2. See F
IG
. 8. Use a 2 mm or 5/64 hex key to remove
two screws (309†

). Remove the valve plate
(305

), cup (312

), and spring (311

).
3. See F
IG
. 9. Remove the snap ring (310

) from each
end. Use the piston to push the end caps (307

) out
of the ends. Remove end cap o-rings (306†

).
4. Remove the piston (302

). Remove the u-cup seals
(308†

) from each end and the detent assembly
(303

) and detent cam (304

) from the center.
F
IG
. 8. Air Plate Removal
309†

305

312

311

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