WCB 11060 (PDF Format)
18
© Copyright Eaton Corp., 1998. All rights reserved
June, 1998
4.5.4
Clean and completely dry the gasket
surfaces on the pressure plate (13),
reaction plate(s) (30) and mounting flange
(1). These surfaces should be free of nicks
and scratches to prevent leaks. Nicks and
scratches may be filled with Loctite
Superflex
®
#596 Sealant.
4.5.5
Apply a uniform bead of Loctite Superflex
®
#596 Sealant in the grooves of the pressure
plate, reaction plate(s) and mounting flange.
Recommended bead diameter is 0.060" -
0.090" (1.5 mm - 2.3 mm).
4.5.6
Inspect the new wear plates and remove
any scratches or raised edges with very
fine sandpaper or steel wool. Position the
smoothest side of the wear plate on the
mating surface being careful to align the
holes.
Loctite Superflex
®
#596 Sealant will
begin to set up and skin over in
approximately 10 minutes. The wear
plate must be fastened to the mating
component within 10 minutes of
applying the sealant.
4.5.7
Install the new screws and locknuts provided
with the wear plate replacement kit and
secure finger tight.
To prevent excessive warpage and
to ensure a good seal, the following
hardware tightening procedure must
be followed.
4.5.8
For each wear plate being replaced, follow
the tightening sequence shown in Figure 12
for the first 16 screws. The remaining screws
may be tightened in any reasonable cross-
wise pattern. See Table 12 for tightening
torques.
Allow the Loctite Superflex
®
#596
Sealant 24 hours to completely cure
before performing the following leak
test procedure.
4.5.9
24 hours after completion of assembly, each
water cavity should be checked for leaks.
Premature pressurization may
cause leaks
4.5.9.1
Using lifting straps, suspend each assembly
with the water outlet port at the 12 o’clock
position. Connect a water supply line to the
inlet port (at 6 o’clock position). See Table 13
for water port size.
4.5.9.2
Slowly fill with water to purge all air from wa-
ter cavities.
4.5.9.3
Install a pipe plug in the outlet port and
apply 40 PSIG (2.7 bar) water pressure
measured at the inlet. Maintain this
pressure for 30 minutes.
4.5.9.4
Check for leakage at O.D. and I.D. seal
areas. NO leakage is allowed.
4.5.9.5
If the assembly leaks, check the torque on
each screw and retest. If leaks still occur,
the wear plate(s) may be damaged. Repeat
procedure from 4.5.4.
Figure 12
Table 12
Wear Plate Fastener Torque-ft-lb (Nm) Lubed
Model
Size
Torque
18WCB
5/16-18NC
21 (28)
24WCB
5/16-18NC
21 (28)
36WCB
3/8-16NC2
40 (54)
Table 13
Inlet and outlet port sizes
Model
Size
18WCB
1/2-14NPT
24WCB
3/4-14NPT
36WCB
1 1/4-11NPT
