Graco 25P784, Instructions Manual

Page: 10 / 28

Maintenance
10 3A7519A
Maintenance
Suggested tools
1/8 in. hex key
3/4 in. socket
15/16 in. socket
15/16 in. open-end wrench
1-7/16 in. socket
1-13/16 in. socket
1-15/16 in. socket
2 in. socket
socket extension
O-ring pick
Torque wrench (50 - 250 ft-lb/ 67.8 - 339 N•m)
Torque wrench (70 in-lb/ 7.9 N•m)
Large adjustable wrenches (1-1/4 in. jaw capacity)
Disassemble
1. Close the bleed type master air valve (E, F
IG
. 1) to
stall the pump while it is in the down stroke position
(F
IG
. 3).
2. Relieve pressure following the Pressure Relief
Procedure , page 8.
3. Disconnect the air supply hose from the pump air
motor (1).
4. Disconnect the fluid hose.
5. Remove the pump from the container and place on
a workbench.
6. Remove the muffler (27).
NOTE: Removing the muffler (27) allows easier
movement of the internal pump components to expose
the flats.
7. Remove the four screws (31) holding the mounting
flange (7) using 1/8 in. hex key (F
IG
. 5).
8. Remove the mounting flange (7), exposing the flats
(F
IG
. 5).
F
IG
. 3
F
IG
. 4
F
IG
. 5
27
7
31
Flat