WCB 11060 (PDF Format)
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© Copyright Eaton Corp., 1998. All rights reserved
June, 1998
6.0 WEAR LIMITS
Table 14
Wear Limits for WCB Components
Item
Description
Wear Limit
Remarks
#8
Friction Disc
Friction Material
Fully worn at bottom of dust
groove. See Figure 5. Friction ma-
terial must also be replaced if con-
taminated with oil or grease.
Multi-disc units have adjustment
provision. See 4.2.
#3
Wear Plate
Friction Wear Surface
Maximum wear is:
18 WCB 0.030"
24 WCB 0.045"
36 WCB 0.050"
Wear will be in form of circular
grooves in copper surface.
#19
Cylinder
Seal Area
Maximum wear is 0.005" (0.13
mm).
Wear will be in the form of grooves
where the seals contact.
#14
Pressure Plate
Bushing Reaction Holes
Maximum wear is 0.031" (0.80
mm).
Wear will be in the form of elonga-
tion of the holes. Original hole di-
ameters are shown in Table 8A.
#31
Reaction Plate
Bushing Reaction Holes
Maximum wear is 0.031" (0.80
mm).
Wear will be in the form of elonga-
tion of the holes. Original hole di-
ameters are shown in Table 8A.
#12
Clamp Tube
Reaction Area
Maximum wear is 0.015" (0.38
mm).
Wear will be in the form of a notch
or step on the side of the tube.
#9 & #28
Friction Disc Core
and Gear
Gear Backlash
Maximum allowable
total backlash is 0.040" (1.0 mm).
If step is worn in gear, gear must be
replaced.
Table 15
Original Reaction Hole Bushing Diameters In
Pressure Plate and Reaction Plate
(Item 53 on Figure 15)
Size
Diameter - In. (mm)
18WCB
1.312 (33.33)
24WCB
1.688 (42.88)
36WCB*
2.060 (52.32)
Table 16
(Item 34, Figures 1 - 3.)
Model
Original
Release Spring
free height
in. (mm)
Minimum
Release Spring
free height
in. (mm)
18 WCB
2.84 (72.14)
1.65 (41.91)
24 WCB
3.45 (87.63)
2.59 (65.79)
36 WCB
4.46 (113.280
2.66 67.56)
Table 17
Original Friction Disc Wear Groove Depth
Model
Depth - in. (mm)
18 WCB
.250" (6.3)
24 WCB
.250" (6.3)
36 WCB
.210" (5.3)
