Diaphragm Repair - VERDER VERDERAIR VA-E50 Manual

Diaphragm Repair

Repair
Diaphragm Diaphragm Repair
Disassemble Disassemble Disassemble the the the Diaphragms Diaphragms Diaphragms
NOTE: NOTE: Diaphragm kits are available in a range of NOTE:
materials and styles. See Parts section.
1. Follow the Pressure Relief Procedure, page
Remove power from the motor. Disconnect all
hoses.
2. Remove the manifolds and disassemble
the ball check valves as explained in
Check Valve Repair, page
3. Use a 13 mm socket wrench to remove the bolts
(5) from the fluid covers, then pull the fluid covers
off of the pump.
4. To remove the diaphragms, the piston must
be moved fully to one side. If the pump is not
attached to the gearbox, turn the shaft by hand
to move the piston. If the pump is still attached
to the gearbox, loosen the screws and remove
the fan cover. Turn the fan by hand to rotate the
shaft to shift the piston to one side.
TIP: TIP: TIP: The air cover has 2 holes (H), one at the
9 o'clock position and another at the 3 o'clock
position (shown below). Use pin (131), placed in
either hole (H) as a brace for the wrench while
removing or installing diaphragm bolts.
859.0765
11.
11.
5. All All Diaphragms All Diaphragms Diaphragms
Metal Pumps: Pumps: Hold a 28 mm wrench on the
a. Metal Metal Pumps:
wrench flats of the exposed piston shaft. Use
another wrench (10 mm hex key) on the shaft
bolt (13) to remove it. Then remove all parts
of the diaphragm assembly.
Plastic Pumps: Plastic Plastic Pumps: Hold a 28 mm wrench on Pumps:
the wrench flats of the exposed piston shaft.
Use a 24 mm socket or box end wrench on
the hex of the fluid side diaphragm plate to
remove the cover. Then use a 10 mm hex
key to remove the bolt.
b. Rotate the drive shaft to move the piston
fully to one side. See instructions in step 4.
Repeat step 6a.
6. To continue with disassembly, see
Disassemble the Center Section, page
Repair
15.
13