Service manual

1-7WPM Drive Systems Manual

Assembly

Fig 014 3428-0157

9. Clean the old gasket material from the mating

surfaces of the case and cover.

10. A hook or small screwdriver can be used to pry the

seals out of the case.

11. An arbor press or large vise will be needed when

removing and replacing the bushings.

12. Clean the oil residue and any metal shavings from

the case.

13. Worm and helical gears are sold as a set. Even after

a short run time, they will develop a wear pattern.

Replacing only one gear will result in rapid failure

(Fig. 014).

14. Remove the screw from the shift arm and remove

the shift arm, dust cover, and wear plate (Fig. 015). If

the ball bearing is to be replaced, press it out at this

time.

Fig 015 3428-0165

15. Remove the roll pin and pull shifter rod out of the

cover. Clean the cover.

WORM DRIVE TRANSMISSION

1. Use bushing installation tool P/N 27-0460, to press

in new axle bushings. This tool helps keep the

bushing straight and keeps the inner diameter of the

bushing correctly sized.

A. Worm Shaft B. Helical Gear

A. Roll Pin E. Shift Arm

B. Latch Plate F. Screw

C. Dust Filter G. Shift Rod

D. Dust Cover