Check Valve Repair; Removal; Installation - Graco DutyMax 24M054 Repair Manual

Check Valve Repair

Check Valve Repair
This equipment stays pressurized until pressure is
manually relieved. To help prevent serious injury from
pressurized fluid, such as skin injection, splashing fluid
and moving parts, follow the Pressure Relief Proce-
dure when you stop spraying and before cleaning,
checking, or servicing the equipment.

Removal

1. Flush pump. Perform Pressure Relief Procedure,
page 9.
2. Remove Displacement Pump, page 26.
3. Remove check valve assembly (64) from
displacement pump (111).

Installation

1. Apply pipe sealant to check valve inlet (64f) threads
and install o-ring (64a) to housing (64b).
64f
64b
ti18598a
28
ti18699a
64a
2. Use 1.5 in. (38 mm) wrench to securely tighten
check valve to pump.
3. Replace Displacement Pump, page 27.
4. Connect paint hose and hand tighten to 70 in-lb
(8 N•m).
5. Verify latch lock is in locked position.
6. Attach drain hose to sprayer.
ti18703a
ti18702a
ti18600a
ti18698a
3A2247A