Graco Manzel MVB 563565, Instructions Manual

Page: 6 / 12

Disassembly Procedure
6 3A2334A
Disassembly Procedure
All reference numbers in parenthesis refer to F
IG
. 3 on
page 8.
1. Disconnect the power source.
2. Follow Pressure Relief Procedure , page 4.
3. Place the pump upside down in a vise with the
pump body in a soft-jaw vise for protection.
4. Depress the piston guide (6) and remove the
self-locking ring (8e) and piston guide (6).
5. Withdraw the piston assembly and piston return
spring (4).
6. With the bottom of the piston visible remove the
retainer ring (8c or 8f), retainer spring (1), and pis-
ton return spring (4).
7. Remove the pump from the vise and turn over. Put
the pump in soft-jaw vise with the adjustment nut
facing upward.
8. Loosen set screw (8k) to relieve locking force on the
piston valves (5). Removal is not necessary.
9. Remove pipe plug (8h or 8j). Unthread and remove
the piston valve (5), being careful not to cut the
o-rings.
10. Replace o-ring and backup rings, if damaged or
worn.
11. Remove the pump from the vise.
12. Place the piston valve (5) in the vise and remove the
indicator port adapter (9).
13. Remove the piston valve (5) from the vise and
remove the ball (8a) and spring (3).