Use only the proper number and grade
fasteners shown in Table 4. Use of
commercial grade (Grade 2) fasteners
where Grade 8 fasteners are specified
may result in failure of the fasteners and
a sudden and drastic reduction in brake
torque.
Make sure that the water inlets and
outlets are at the 6 o’clock and 12
o’clock positions, respectively. See Fig-
ures 2 & 8. This will ensure that there
will be no air pockets in the water cavity
during operation, which would allow the
tensioner to overheat.
Table 5
Air inlet size
Model
Thread Size
8 WCB
3/8-18 NPT
14 WCB
1/2-14 NPT
18 WCB
1/2-14 NPT
24 WCB
1/2-14 NPT
36 WCB
3/4-14 NPT
2.3.2
To facilitate the tensioner mounting process,
the friction disc assemblies should be aligned
to the gear and centered in the tensioner. With
the tensioner laying on the floor, low er the gear
(28) slow ly and very carefully into the splined
bore of the friction disc assemblies (7). Adjust
the discs so that they are centered in the
tensioner and fit the gear. Apply and maintain
an air pressure of 25 PSIG (1.7 bar) to the
cylinder. This w ill engage and hold the discs in
position to facilitate tensioner installation.
Remove the gear.
2.3.3
Ensure that the shaft is free of nicks or burrs
and the key fits properly in the shaft and gear.
2.3.4
Apply a light coat of anti-seizing compound to
the shaft and key. Tap the key into the shaft
keyw ay.
2.3.5
Press the gear onto the shaft, making sure
that the dimension betw een the gear and
the tensioner mounting surface (" A" ) is
maintained. See Figure 1 and Table 1. Heating
the gear uniformly to 250
o
F (121
o
C) w ill
expand the bore and ease assembly.
TABLE 6
Coolant Supply Data
Size
Thermal
Rating
1
HP (kW)
Water Inlet
and Outlet
Pipe Size
Min. Flow
Rate
2
GPM
(dm3/min)
100% Water
Min. Flow
Rate
2
GPM
(dm3/min)
70% Water,
30% Ethylene
Glycol by Vol.
Min. Flow
Rate
2
GPM
(dm3/min)
60% Water,
40% Ethylene
Glycol by Vol.
Min. Flow
Rate
2
GPM
(dm3/min)
50% Water,
50% Ethylene
Glycol by Vol.
108
30 (22.4)
1/2-14NPT
3 (11.4)
3.5 (13.4)
3.9 (14.7)
4.5 (17.0)
208
60 (44.7)
1/2-14NPT
6 22.7)
7 (26.8)
7.8 (29.4)
9 (33.9)
114
60 (44.7)
1/2-14NPT
6 (22.7)
7 (26.8)
7.8 (29.4)
9 (33.9)
214
120 (89.4)
1/2-14NPT
12 (45.4)
14 (53.6)
15.6 (58.8)
18 (67.9)
118
120 (89.4)
1/2-14NPT
12 (45.4)
14 (53.6)
15.6 (58.8)
18 (67.9)
218
240 (179)
1/2-14NPT
24 (91)
28 (106)
31 (117)
36 (136)
318
360 (268)
1/2-14NPT
36 (136)
42 (161)
47 (176)
54 (204)
124
270 (201)
3/4-14 NPT
27 (102)
32 (121)
35 (132)
40 (151)
224
540 (402)
3/4-14 NPT
54 (204)
64 (242)
70 (265)
80 (303)
324
810 (603)
3/4-14 NPT
81 (306)
96 (363)
105 (396)
120 (453)
424
1080 (804)
3/4-14 NPT
108 (408)
128 (484)
140 (528)
160 (604)
136
650 (485)
1 1/4-11 NPT
65 (246)
76 (288)
84 (318)
98 (371)
236
1300 (970)
1 1/4-11 NPT
130 (492)
152 (576)
168 (636)
196 (742)
336
1950 (1454)
1 1/4-11 NPT
195 (738)
228 (863)
253 (985)
294 (1113)
436
2600 (1940)
1 1/4-11 NPT
260 (984)
304 (1152)
336 (1272)
392 (1484)
1
Thermal rating based on a 70
o
F (21
o
C) w ater inlet temperature rise betw een inlet and outlet.
2
Flow rate is based on requirement of 1 U.S. GPM per 10 HP thermal dissipation.
PDF FORMAT
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© Copyright Eaton Corp., 1995. All rights reserved.
Summary of Contents for 146246A
Page 5: ...18 24 36 WCB Single Disc Figure 4 PDF FORMAT 4 Copyright Eaton Corp 1995 All rights reserved ...
Page 6: ...18 24 36 WCB Dual Disc Figure 5 PDF FORMAT 5 Copyright Eaton Corp 1995 All rights reserved ...
Page 7: ...18 24 36 WCB Triple Disc Figure 6 PDF FORMAT 6 Copyright Eaton Corp 1995 All rights reserved ...
Page 8: ...Figure 7 18 24 36 WCB Quad Disc PDF FORMAT 7 Copyright Eaton Corp 1995 All rights reserved ...