Yanmar 1GM User Manual page 229

TRANSMISSION-KBW SERIES 223
11. Fit the key (4,
Figure
3) into the slot on the output
shaft so the fillet side of the key faces the threaded end of
the output shaft.
12. Install the pressure plate, with the ball slots facing up,
so the steel plate tangs fit into the three slots in the pres-
sure plate. Make sure the pawls of a11 three steel plates en-
gage the pressure plate.
13. Install three steel balls into the slots on the pressure
plate. Install the drive plate onto the output shaft so the
side ofthe drive plate with concentric groove is facing the
forward gear assembly. Make sure all three steel balls.re-
main in place and the grooves ofthe pressure plate and the
drive plate match when the drive plate is installed.
14. Insert both locating pins into the drive plate so they
engage the torque limiter slots of the pressure plate.
15. Install the shim, spacer and inner needle bearing race
on the ouput shaft using a suitable bearing driver.
16. Insert the detent pins and springs into the drive plate.
Install the shift ring over the drive plate so the three legs
with grooves are facing the forward gear and the detent
pins in the drive plate properly engage the pin slots of the
inside diameter of the shift ring.
17. Install three steel balls in the slots of the drive plate
and place the pressure plate over the drive plate. Make
sure the steel balls remain in position and the slots of both
plates match.
18. Install the pressure plate return springs between the
shift ring and the drive plate. Attach the spring ends to the
small holes inside the pressure plates as shown in
Figure
14.
19. Install the reverse gear assembly so the tangs of all
three steel plates properly engage the slots in the pressure
plate.
20. Install the needle bearing and thrust washer with the
copper sintered side ofthe washer facing the reverse gear.
21. Using a suitable bearing driver install the rear output
shaft inner race onto the output shaft. Make sure the race
bottoms against the thrust washer.
22. Check for smooth rotation of both the forward and re-
verse gears. Check for correct operation of the shift ring.
Belleville
springs
Bearing
A
Return
spring
Retainer
Spacer
7. Install the thrust washer on the output shaft with the
sintered copper surface facing away from the bearing.
Shifter
8. Using a suitable bearing driver, install the needle bear-
ing inner race on the output shaft. Be sure the race bottoms
against the thrust washer.
9. Install the needle bearing, spacer and shim on the out-
put shaft.
10. Install the forward gear assembly on the output shaft
and align the steel plate tangs.
Refer to Figure 3.
NOTE
Make alignment marks on the shift lever and
shift shaft so the shift lever can be rein-
stalled
in
its original position.
1. Loosen the clamp bolt and remove the shift lever.
2. Remove the shift cam.