Graco QUANTM i30 Instructions Manual page 35

Reassemble the Standard 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.
1. Assemble the air-side plate (21), diaphragm
backers (14), diaphragms (13), fluid side plates (11),
and seals (16, if applicable) with the fasteners (15)
exactly as shown for your equipment model. See
your related parts manual. See Related Manuals,
page 2.
NOTE: Face the rounded side of the fluid side plate
(11) toward the diaphragm (13).
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.
Apply a medium-strength thread locker to the shaft
side of the fastener to attach the diaphragm to the
1
shaft.
Rounded side faces toward the diaphragm (13).
2
1
21
1a
14
13
F . 16: Reassemble Standard Diaphragms
IG
3A8572B
3
7
7b
15
1
16
11
2
2. Install the assembled diaphragm assemblies into
the shaft (1a) and hand-tighten the fasteners (15).
3. Use an applicable wrench to firmly hold one
fastener (15) in place. At the same time, use an
applicable wrench to torque the opposite fastener
(15) to 50 ft-lb (68 N•m). See F
Torque to 50 ft-lb (68 N•m).
4
See Torque Fasteners, page 39.
5
13
15
F . 17: Tighten Standard Diaphragms
IG
4. Rotate the shaft of the motor to center it in the
motor, so that neither diaphragm is extended away
from the housing, which could inhibit installing the
fluid covers.
NOTE: If it is not possible for both diaphragms to
be in contact with the housing, choose one
diaphragm to position first. Once the first fluid
cover is fastened, slowly drive the motor so that the
other diaphragm is in contact with the housing.
Then fasten the second fluid cover.
5. Align the fluid covers (3) to the motor (1).
6. Install fasteners (7, 7b, if applicable) to hold the
fluid covers (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.
7. Torque all fasteners (7, 7b, if applicable). Follow
Torque Fasteners, page 39.
8. Reassemble the check valves and manifolds as
explained in Reassemble Check Valves, page 33.
Repair
. 17.
IG
1
3
7b
4
7
5
5
35