Graco Inc 308178, 224895 Service, Servicing the Shaft O-Rings, Servicing the Diaphragm and Shaft

Service

Servicing the Shaft O-Rings

1.Relieve the pressure.

WARNING

To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Pressure Relief Procedure on page 4.

2.Place a container under the surge suppressor, disconnect the hoses, and turn the surge suppressor on end to drain the fluid.

3.Remove the v-clamp (6). See the Parts Drawing on page 12.

4.Separate the housing (8) from the cover (7) to expose the diaphragm and shaft assembly. Pull the diaphragm and shaft out of the housing. See Fig. 2.

5.Remove the three o-rings (19) from the shaft (11).

6.Lubricate the three new o-rings (19*) with lithium-based grease and install them in the grooves on the shaft.

7.Lubricate the inner diameter of the housing (8) with lithium-based grease. Slide the shaft and diaphragm assembly into the housing (8). Place the cover (7) on the housing (8).

8.Position the clamp (6) around the housing (8) and cover (7). Apply thread lubricant to the threads of the v-clamp, secure with the nuts, and torque to 6 to 10 ft-lb (1.4 to 13.6 N.m). See the Parts Drawing on page 12.

Servicing the Diaphragm and Shaft

NOTE: Diaphragm Repair Kits are available. See page

14.Parts included in the kits are marked with asterisks. The kits include some parts which are not used on the surge suppressor. Use all the applicable parts in the kit for the best results.

1.Relieve the pressure.

WARNING

To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Pressure Relief Procedure on page 4.

2.Place a container under the surge suppressor, disconnect the hoses, and turn the surge suppressor on end to drain the fluid.

3.Remove the v-clamp (6). See the Parts Drawing on page 12.

4.Separate the housing (8) from the cover (7) to expose the diaphragm and shaft assembly. Pull the diaphragm and shaft out of the housing. See Fig. 2.

5.Hold the bolt (14) steady with a wrench. Wrap a rag around the shaft (11) to protect it, then unscrew the shaft from the bolt using locking pliers. Remove the nut (31), upper diaphragm plate (32*), diaphragm (13), PTFE diaphragm (Models 224892 and 224894 only), lower diaphragm plate (12), and o-ring (15) from the bolt. Clean and inspect all parts for wear or damage.

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