Nexen MBU-1125 937300 - Manual (Page 14)

14 FORM NO. L-21087-C-1010
MODULAR DRIVE UNIT (MDU)
Model 1125
Refer to Figure 11.
1. Remove the old Ball Bearing (Item 27).
2. Remove the Retaining Ring (Item 36) from the Hub.
3. Slide the Hub (Item 6), Compression Spring (Item 14),
Spring Back-Up Washer (Item 52), Spring Retainer Washer
(Item 16), and Retaining Ring (Item 34) out of the Friction
Disc (Item 7).
4. Press the Piston (Item 4), Friction Disc (Item 7), and Ball
Bearing (Item 26) out of the Housing (Item 1).
5. Remove the old O-ring Seals (Items 41 and 43) from the
Piston (Item 4) and Housing (Item 1).
6. Remove the Retaining Ring (Item 37) from the Friction Disc
(Item 7); then, using a bearing puller, remove the Piston (Item
4) and old Ball Bearing (Item 26) from the Friction Disc (Item
7).
7. Remove the Retaining Ring (Item 40) from the Piston (Item 4)
and press the old Ball Bearing (Item 26) out of the Piston.
8. Clean the bearing bore of the Piston (Item 4) with fresh
solvent, making sure all old Loctite ® residue is removed.
9. Apply an adequate amount of Loctite ® 680 to evenly coat
the outer race of the new Ball Bearing (Item 26) and press
the new Ball Bearing into the Piston (Item 4).
10. Reinstall the Retaining Ring (Item 40).
11. Support the inner race of the new Ball Bearing (Item 26);
then, press the Friction Disc (Item 7) into the Piston (Item
4) and new Ball Bearing (Item 26).
12. Reinstall the Retaining Ring (Item 37).
13. Lubricate the new O-ring Seals (Items 41 and 43) and the
o-ring contact surfaces of the Piston (Item 4) and Housing
(Item 1) with a thin film of fresh o-ring lubricant.
14. Install the new O-ring Seals (Items 41 and 43); then slide the
Piston (Item 4) and Friction Disc (Item 7) into the Housing
(Item 1).
15. Remove the Retaining Ring (Item 34), Spring Retainer
Washer (Item 16) and the Compression Spring (Item 14)
from the Hub (Item 6).
16. Inspect the Compression Spring (Item 14) for signs of fatigue
and replace it if necessary.
17. Slide the Compression Spring (Item 14), and Spring Retainer
Washer (Item 16) onto the Hub (Item 6); then, reinstall the
Retaining Ring (Item 34).
18. Apply a thin film of Never-Seez ® to the splines of the Hub
(Item 6); then, slide the Hub and Compression Spring (Item
14) into the Friction Disc (Item 7).
19. Reinstall the Retaining Ring (Item 36).
20. Slide a new Ball Bearing (Item 27) onto the Hub (Item 6).
PARTS REPLACEMENT
(continued...)
(continued...)
CAUTION
Special attention should be exercised
when working with retaining rings. Always
wear safety goggles when working with
spring or tension loaded fasteners or
devices.
FIGURE 11