Repair
18 311688L
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).
