Graco Inc 309856P, TI3840a, 2004230905 important safety instructions Check Valves

Check Valves

Before disassembling, press on ball (36c) to test check valve for proper movement and spring action.

1. Follow Pressure Relief Procedure, page 18.

2. Flush Gun, page 22.

3. Disconnect air (D) and remove fluid manifold (G).

Clean and inspect check valve mating surfaces and fluid ports.

G

D

TI3837a

CAUTION

To prevent cross-contamination of the check valves, do not interchange A component and B component parts. The A component check valve is marked with an A.

4. Pry out check valves (36) at notch.

Repair

WARNING

Read warnings, page 9. Damaged check valve o-rings (36f, 36g) may result in external leakage. Replace o-rings if any damage is seen.

5. Slide filter (36d) off. Clean and inspect parts. Thor-

oughly inspect o-rings (36f, 36g). If necessary, remove screw (36b) and disassemble check valve.

B

	A	36b
		36e
		36c
		36d
36		36g
		36a
		36f	TI3836a

6. Reassemble check valves. Screw (36b) should be

flush (within 1/16 in. or 1.5 mm) of housing (36a) surface. Liberally lubricate o-rings (36f, 36g) and carefully reinstall in fluid housing.

7. Attach fluid manifold. Connect air. Return gun to service.

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