WCB11070 (PDF FORMAT)
20
©
Copyright Eaton Corp. 2007, All Rights reserved.
4.6.6
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.
4.6.7
Install new screws and locknuts provided with the
wear plate replacement kit and secure finger tight.
Sizes 18 and larger require clamp rings to be posi-
tioned between the screws or nuts and the wear
plates. See
Figure 2
.
To prevent excessive warpage and to ensure
a good seal, the following hardware tighten-
ing procedure must be followed.
4.6.8
For each wear plate being replaced, follow the tighten-
ing sequence shown in
Figure 17
for the first 16
screws. The remaining screws may be tightened in
any reasonable crosswise pattern. See Table 11 for
tightening torque values.
Figure 17
Allow the Loctite Superflex
®
#596 Sealant 24
hours to completely cure before performing
the following leak test procedure.
4.6.9
After completion of the assembly, each water cavity
should be checked for leaks.
4.6.9.1 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 posi-
tion). In reaction plates, plug the remaining inlet port.
See Table 12 for water port sizes.
4.6.9.2 Slowly fill with water to purge all air from water cavi-
ties.
4.6.9.3 Install pipe plug(s) in the outlet port(s) and apply
appropriate water pressure (40 psi) (2.7 bar) for size
36 and 48 WCB2 units and 45 psi (3.1 bar) for all other
sizes) measured at the inlet. Maintain this pressure
for a minimum of 30 minutes.
4.6.9.4 Check for leakage at O.D. and I.D. seal areas.
NO
leakage is allowed.
4.6.9.5 If the assembly leaks, check the torque on each screw
and re-test. If leaks still occur, the wear plate(s) or
sealant groove may be damaged. Repeat procedure
from 4.6.1.
4.6.9.6 Follow steps in Section 4.9 to reassemble the ten-
sioner.
4.6.10 Machining of the wear surfaces is required for sizes
36" and 48" after replacement of the wear plates or
the adjoining friction material. See
Figure 18
for
machining specifications. Clean all wear surfaces
after machining to remove any residual contaminates.
TABLE 11
Wear Plate Fastener Torque: ft.lb.(Nm)
Model
Size
Torque
8 WCB2
#10-24NC
5 (7)
14 WCB2
1/4-20NC2
12 (16)
18 WCB2
5/16-18NC
21 (28)
24 WCB2
5/16-18NC
21 (28)
36 WCB2
3/8-16NC2
40 (54)
48 WCB2
3/8-16NC2
40 (54)
TABLE 12
Inlet and Outlet Port Sizes
Model
Size
8 WCB2
3/8-18NPT
14 WCB2
1/2-14NPT
18 WCB2
1/2-14NPT
24 WCB2
3/4-14NPT
36 WCB2
1 1/4-11NPT
48 WCB2
1 1/4-11NPT
