Nexen MWCB 830812 - Manual (Page 19)

19
FORM NO. L-20016-X-1209
6. Slide the Clutch Assembly onto the Hub (Item 1) and Key
(Item 15).
7. Align the Spring Pin (Item 23) located on the Brake Assembly
with the hole in the Clutch Assembly and press the Clutch
Assembly onto the Hub (Item 1).
8. Slide the Compression Spring (Item 11) onto the Hub (Item
1); then, pressing on the inner bearing race, press the Sheave
or Drive Disc Assembly onto the Hub.
9. Reinstall the Retaining Ring (Item 37) and Hub Collar; then,
reinstall the Set Screw (Item 47).
47
46
37
FIGURE 28
FIGURE 27
Sheave
Assembly
Drive Disc
Assembly
11
Hub
(Item 1)
FIGURE 26
Clutch
Assembly
19
21
15
23
Brake
Assembly
LWCB AND MWCB
Refer to Figures 29 & 30.
1. Fully supporting the inner bearing race, press the Hub (Item
1) into the Sheave or Drive Disc Assembly.
2. Slide the Compression Spring (Item 11) onto the Hub (Item
1); then, supporting the inner bearing race, press the Clutch
Assembly onto the Hub (Item 1).
3. Lubricate the new O-Ring Seals (Items 19 and 21) with fresh
O-Ring lubricant; then, install the new O-Ring Seals onto the
Brake and Clutch Assemblies.
4. Align the Spring Pin (Item 23) located on the Brake Assembly
with the hole in the Clutch Assembly and press the Brake
Assembly onto the Hub (Item 1).
5. Slide the Spacer (Item 16) onto the Hub (Item 1); then, align
the three holes in the Brake Friction Disc (Item 2) with the
three holes in the Hub and slide the Brake Friction Disc (Item
2) onto the Hub.
6. Reinstall the Locking Nut (Item 26) and tighten the Set Screws
(Item 29) to 20 In. Lbs. [2.2 Nm] torque for the LWCB and
35 In. Lbs. [3.9 Nm] torque for the MWCB.
FIGURE 29
Clutch
Assembly
Sheave
Assembly
Drive Disc
Assembly
1
11
FIGURE 30
Hub
(Item 1)
19
21
Brake
Assembly
16
2
26
28
29
23
Clutch
Assembly
CAUTION
Working with spring loaded or tension
loaded fasteners and devices can cause
injury. Wear safety glasses and take the
appropriate safety precautions.
REASSEMBLy—PILOT, COUPLING, AND SHEAVE MOUNT (continued)