Graco Inc 237000, 307741, 235525, 220106, 03695A manual To prevent the spring-loaded director valves

Page 11

Service

NOTE: Refer to Fig. 4 for steps 6 to 11.

6.Remove the screws (31) and lockwashers (13) from the manifold (20).

7.To prevent the spring-loaded director valves

(3)from popping out, carefully lift the manifold

(20)up about 51 mm (2 in.) from the cylinder (36). Place one hand under the manifold to hold the director valves in the valve housing (5), then continue lifting the manifold. Remove your hand slowly, allowing the valve springs to release gently. Inspect the director valves (3) and compression springs (4).

8.Turn the manifold (20) over. Place wrenches on the flats of the adjusting screw (11) and nut (12) and turn the screw further into the nut until you can remove it. Do this in all four positions.

WARNING

The openings in the valve plates (2) are very sharp. Be careful not to cut yourself.

20

31

13

7

6

5

4

3 3

4

40

10

38

36

9.Remove and check the valve plates (2), handling them carefully. Clean the plates and mating sur- faces of the manifold (20). Remove the rubber pad

(8).

NOTE: If you replace the valve plates, also replace the seals (1).

CAUTION

Be careful not to damage the surface of the trip rod (40), which would restrict its free movement. Special padded pliers, 207579, are available.

10.Pull the trip rod (40) up and grasp it with the padded locking pliers (order 207579). Hold the flats of the valve housing hub (10) with a wrench, screw off the trip rod nut (7) and remove the air valve housing (5). Remove the lockwasher (6) and screw off the hub (10). Now release the pliers.

11.Remove the gasket (38) from the air cylinder (36).

Detail of Air Manifold and Valve Plates

20

8

2

1

1

2 12

11

07282A

Fig. 4

307741 11

Image 11
Contents This manual contains important warnings and information 307741Part No , Series a Part No , Series BSymbols Table of ContentsInjection Hazard Fire and Explosion Hazard General Information Grounding InstallationAir Motor Icing Noise ReductionStalled Motor TroubleshootingPressure Relief Procedure Always follow the Pressure Relief Procedure whenever youAir Leaks Check Chart45, *46 Tools Required ServiceDisassembly To prevent the spring-loaded director valves Service 07283A 07421A 03701 Reassembly 39 2 02963 Lubricate the housing 18, spring 17, and guide Model 220106, Series a PartsTrip ROD Assy Description QtyModel 235525, Series B 26n 166221 Ring nitrile rubber Model 237000, Series a Muffler Model DimensionsCategory Data Technical DataManual Change Summary Page 307741 Toll Free Graco Standard WarrantyGraco Phone Number