Graco 25T817, Instruction Manual

Page: 23 / 32

Repair
3A8570B 23
12. Place the gasket onto the terminal box.
13. Replace the terminal box cover onto the terminal
box.
14. Insert the four terminal box cover screws and
tighten (see F
IG
. 22).
15. Complete using the Installation information
beginning on page 9.
Clean and Inspect Pressure
Relief Valve Assembly
Disassembly
1. Follow Pressure Relief Procedure . page 10.
2. Turn off and disconnect the power to the pump.
3. Remove the pump from the tank.
4. Remove the suction tube from the pump.
5. Remove the relief valve housing (F
IG
. 34).
NOTE: Do not loosen the cap nut and nut since this will
change the pressure setting.
6. Remove the spring (9) (F
IG
. 34).
7. Remove the spring guide (8) (F
IG
. 34).
8. Remove the relief ball (7) (F
IG
. 34).
9. Inspect for damage, excessive wear of the ball and
the ball seat, and for any contamination. If
damaged or excessive wear is present, replace the
pump housing assembly. If neither is present,
proceed to reassembly.
F
IG
. 32
F
IG
. 33
E1
Strain Relief Nut
Strain Relief
Inlet
Outlet
F
IG
. 34
7
8
9
Relief Valve
Housing
Cap Nut
Nut