5.If clutch does not slip freely, disassemble and clean the flange yoke (1), clutch hub (3), drive plate (4), drive plate (5), and thrust plate faces (6).
6.Reassemble clutch.
7.Compress each of the six compression springs (8) by tightening the six cap screws (7) and lock nuts (10). The compression springs should be
compressed to a height of
8.If a clutch continues to slip when the springs are compressed to 1.36", check friction discs (2) for excessive wear. Discs are 1/8" when new. Replace discs after 1/16" wear.
1. Flange yoke
2. Friction disc
3. Hub,
4. Thrust plate
5. Belleville spring plate
6. 10 mm x 1.5P x 50 mm Cap screw
7. 10 mm x 1.5P Hex nut
8. 12 mm x 1.5P x 65 mm Cap screw
9. 12 mm x 1.5P Hex nut
Figure 14. BB600X, BB720X, BB840X & BB840XP S/N 1127329 & Above Slip Clutch Assembly
1. Flange yoke
2. Friction disc
3. Hub,
4. Drive plate
5. Drive plate
6. Thrust plate
7. 12 mm x 115 mm GR8.8 HHCS
8. Compression spring
9. Flat washer
10. 12 mm x 1.25P Nylok lock nut
11. 12 mm x 65 mm GR8.8 HHCS
12. 12 mm x 1.5P Nylok lock nut
Figure 15. Slip Clutch Assembly BB840XP S/N 1127328 & Below
(Rev. 10/31/2008) MAN0654 (Rev. 10/19/2007)
Owner Service 23
