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Repair
Repair the Standard
Diaphragms
Required Tools:
•
10 mm socket wrench (for all VA-2E25 models,
VA-2E40 plastic models, and VA-2E50 plastic
models)
•
13 mm socket wrench (for VA-2E40 metal models
and VA-2E50 metal models)
•
Torque wrench
•
25 mm open-end wrench
®
•
Lubriplate
Synxtreme HD-2 grease, part number
814-0347 (or equivalent NLGI Grade 2 synthetic
grease with calcium sulfonate base)
•
15 mm hex wrench
See F
. 15–F
. 17.
IG
IG
NOTE: Lubricate the motor rotor when replacing
diaphragms. See your related motor manual. See
Related Manuals, page 2.
Disassemble the Standard Diaphragms
To avoid severe burns, do not touch hot fluid or hot
equipment.
1. Follow Prepare Equipment for Repair, page 32.
2. Follow Disassemble Check Valves, page 33.
3. Remove all fasteners (7, 7b, if applicable) from the
fluid covers (3). Remove the fluid covers (3).
4. Use an applicable wrench to firmly hold one
diaphragm fastener (15) in place. At the same time,
use an applicable wrench to loosen the fastener
(15) on the opposite side.
5. Remove the fastener (15), seal (16, if applicable),
fluid plate (11), diaphragm (13), and diaphragm
backer (14) from the shaft (1a) on the side of the
pump with the loosened fastener (15).
6. Loosen the remaining diaphragm fastener (15).
If the first loosened diaphragm fastener (15) is
on the side of the shaft (1a) with the wrench flat:
a. Use an applicable wrench to firmly hold the flat
of the shaft (1a) in place. At the same time, use
34
an applicable wrench to loosen the remaining
diaphragm fastener (15). See F
If the first loosened diaphragm fastener (15) is
opposite the wrench flat on the shaft (1a):
a. Follow the procedure to lubricate the rotor in
your related motor manual to access the flat of
the shaft (1a). See Related Manuals, page 2.
b. After the flat of the shaft (1a) is accessible, use
an applicable wrench to firmly hold the flat of
the shaft (1a) in place. At the same time, use an
applicable wrench to loosen the remaining
diaphragm fastener (15). See F
7. Remove the remaining fastener (15), seal (16, if
applicable), fluid plate (11), diaphragm (13), and
diaphragm backer (14), and air-side plate (21) from
the shaft (1a).
NOTE: Do not remove the diaphragm shaft (1a)
from the motor (1).
NOTICE
To avoid damage to the rotor or equipment, do not
remove the shaft (1a) from the motor (1). Removing
the shaft will cause the rotor balls to dislodge from
the rotor and the rotor will not function properly.
8. Clean and inspect parts for wear or damage.
Replace parts as needed.
9. Lubricate the rotor. See your related motor manual.
See Related Manuals, page 2.
1
1a
21
14
13
F
. 15: Standard Diaphragms
IG
. 17.
IG
. 17.
IG
7
3
7b
16
15
11
813-0525B
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