Graco 311688L Repair the Shaft and Bearings, Fluid Inlet and Outlet Adapters, Disassembly

Repair

Repair the Shaft and Bearings

NOTE: Parts marked with a (♦ ) are included in Shaft repair kit 233841. For the best results, use all parts in the repair kit.

Parts marked with a (❖) are included in Bearing repair kit 15J647.

Disassembly

1.Remove the diaphragms. See page 13.

2.Disassemble the air valve. See page 16.

3.Remove the housing (54).

•Sleeve clamp (6) is visible inside the air valve cavity. Spread the sleeve clamp (6) with pliers DIN 5254A, nominal size 19, and at the same time, slide the shaft assembly (7) out from the end where housing (54) was removed.

NOTE: The valve carriage (5) will remain free inside the diaphragm housing.

4. Remove clip (42) and bearing (3).

Reassembly

1.Replace o-ring (2) in bearing, lubricate internal o-rings.

2.Install new bearing (3) and clip (42) inside housing (54).

3.Insert shaft assembly (7) into diaphragm housing (1) through the valve carriage, spreading the sleeve clamp to allow full insertion. Be careful to release sleeve clamp (6) in the correct location along the shaft to engage it in all three grooves.

4.Reinstall the housing (54).

5.Replace o-rings on the carriage, air valve plate, and plugs and reinstall the air valve section. (See page 16.)

6.Replace the diaphragms (page 13).

7.Replace the ball check seals (29) (page 20) and reinstall the fluid covers.

Fluid Inlet and Outlet Adapters

If the fluid inlet adapter (1a) or outlet adapter (1c) have been removed, apply sealant primer and high strength anaerobic sealant to the adapter threads before install- ing. Be sure to install new o-rings (1b, 1d). Torque the adapters to 12.5-14.7 ft-lb (17-20 N•m).

18 311688L