Repair
3A8572B 37
Reassemble the Overmolded Diaphragms
1. On the side of the shaft (1a) opposite of the wrench
flat, install the air-side plate (21), diaphragm backer
(14), and diaphragm assembly (13, 15) into the shaft
(1a). Firmly tighten.
NOTE: Regardless of any markings on the
diaphragm backer (14), always assemble the
diaphragm backer (14) so that the outer bead cups
around (not away from) the outer bead of the
diaphragm (13).
NOTE: Apply thread locker to the fastener (15) for
all diaphragm assemblies.
FIG. 19: Reassemble Overmolded Diaphragms
2. Use an applicable wrench to hold flat of the shaft
(1a) firmly in place. At the same time, grip the
diaphragm (13) securely around the outer edge and
rotate clockwise to firmly tighten.
3. Rotate the shaft (1a) until it is centered in the motor
(1).
4. On the side of the equipment with the installed
diaphragm, align the fluid cover (3) to the motor (1).
5. Loosely install the fasteners (7, 7b, if applicable) to
hold the fluid cover (3) in place.
6. On the side of the shaft (1a) with the wrench flat,
install the air-side plate (21), diaphragm backer (14),
and diaphragm assembly (13, 15) into the shaft (1a).
Firmly tighten.
7. Align the fluid cover (3) to the motor (1).
8. Loosely install the fasteners (7, 7b, if applicable) to
hold the fluid cover (3) in place.
NOTE: To ensure proper spacing and alignment of
the manifolds (4, 5), install fasteners (7, 7b, if
applicable) loose enough to allow for fluid cover
movement before securing the fluid covers (3) in
place.
9. Torque all fasteners (7, 7b, if applicable). Follow
Torque Fasteners, page 39.
10. Reassemble the check valves and manifolds as
explained in Reassemble Check Valves, page 33.
FIG. 20: Tighten Overmolded Diaphragms
NOTICE
After reassembly, allow the thread locker to cure for
12 hours, or per instructions of the manufacturer,
prior to operating the equipment. The equipment will
be damaged if the diaphragm shaft fastener loosens.
3
7
7b
13
1
1a
Apply a medium-strength thread locker to the shaft
side of the fastener to attach the diaphragm to the
shaft.
15
21
14
3
7
7b
13
1
See Torque Fasteners, page 39.
5
5
To Next Page
Loading...
