Service Manual
2-11
WPM Drive Systems Manual
WORMDRIVETRANSMISSION
1. Jam nut 13. Oil Seal
2. Lock washer 14. Output shaft
3. Half pulley 15. Traction bracket
4. V Belt 16. Thread forming screw
5. Pulley spacer 17. Gearbox case
6. Gearbox cover 18. Thrust washer
7. Shaft & worm 19. Roll pin
8. Ball bearing 20. Helical gear
9. Gearbox gasket 21. Thrust washer
10. Check plug 22. Bushing
11. Gasket check plug 23. Roll pin
12. Bushing
The constant mesh type transmission is used in a 48cm
rear wheel drive application.
CONSTANTMESH
Description
This transmission is very similar to the “INTERNALLY
CLUTCHED” on page 1 – 1. However, the helical gear
is different as there is no internal clutching (Fig. 022).
Engagement and disengagement is accomplished by
pivoting the transmission to tighten or loosen the belt.
Internal repair procedures are the same, as is the
lubrication requirement, 90 wt. gear oil rated GL-5 or
higher.
Fig022 g 18-A