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Service
Replacing Diaphragms
Replace the diaphragms as follows. See Fig. 5 and Fig. 6.
1.
Relieve the pressure, and disconnect the air line from
the pump.
Warning
To reduce the risk of serious injury whenever you are
instructed to relieve pressure, always follow the Pressure
Relief Procedure on page 7.
2.
Remove the eight screws (58) that fasten the two fluid
covers (51) to manifold (52), and remove the fluid cover/
center housing assembly from the manifold.
3.
Remove the six screws (58) that fasten each fluid
cover (51) to the center housing (1), and pull the fluid
covers off of the center housing.
4.
Remove the diaphragm plates (50) from the shaft (10),
and remove the diaphragms (30), and air-side dia-
phragm plates (11).
1
Fig. 5
12 819.6247
9
12
13
10
11
57
5.
Remove the diaphragm pins (8), remove and replace the
o-rings (9), and reinstall the diaphragm pins in the center
housing (1).
6.
Reinstall the diaphragm shaft (10).
7.
Install the new diaphragms (30) with the concave side
toward the center housing (1).
8.
Screw the diaphragm plates (50) onto the shaft (10), and
torque to 40 in-lb (4.5 N.m)
9.
Replace the fluid covers (51) on the center housing (1),
replace the screws (58) that fasten the fluid covers to the
center housing, and torque the screws to 40 in-lb
(4.5 N.m). See Torque Sequence on page 17.
10. Replace the manifold covers/center housing assembly
on the manifold (52), replace the screws (58) that fasten
the manifold covers/center housing assembly to the
manifold, and torque the screws to 40 in-lb (4.5 N.m)
11. Reconnect the pump.
8
30
50
58
51
58
06180C
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