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Repair
Standard Diaphragm
Diaphragm Repair
Standard
Standard
Diaphragm
Tools
Tools Required:
Tools
Required:
Required:
• Torque wrench
• 5/8 in. wrench
• 19 mm open end wrench
• O-ring pick
• Lithium base grease
NOTE:
NOTE:
NOTE: Center section gasket is dependent on
diaphragm material. If changing diaphragm material,
it may be necessary to also replace the center section
air cover gaskets. See
air cover gaskets.
Disassemble the
the Standard
Standard Diaphragms
Disassemble
Disassemble
the
Standard
NOTE:
NOTE:
NOTE: Diaphragm kits are available in a range of
materials and styles. See Parts section.
1. Follow the
Pressure Relief Procedure, page 9
2. Remove the manifolds and disassemble
the check valves as explained in
Check Valve Repair, page
3. Remove the clamps (21) from the fluid covers
(15), then pull the fluid covers off of the pump.
4. With both fluid covers removed, using two 5/8 in.
wrenches, hold the wrench flats on the plates (Y)
of each diaphragm assembly and loosen. One
diaphragm assembly will come free and the other
will remain attached to the shaft.
14
Repair
Repair
Parts, page
22, for affected
Diaphragms
Diaphragms
12.
5. Disassemble the free diaphragm assembly.
6. Remove plate (12) with bolt (14) installed,
diaphragm (10), backer (11) if present, and plate
(9).
7. Pull the other diaphragm assembly and the
.
diaphragm shaft (24) out of the center housing
(101). Hold the shaft flats with a 19 mm open end
wrench, and remove the diaphragm assembly
from the shaft. Disassemble the remaining
diaphragm assembly.
8. Inspect the diaphragm shaft (24) for wear or
scratches. If it is damaged, inspect the bearings
(111) in place. If the bearings are damaged, refer
to
Center Section Repair, page
9. Clean all parts and inspect for wear or damage.
Replace parts as needed.
19.
812.0064
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