Rivera Primo Powerdrive 6 Transmission Shifter Cam & Fork Assembly - Manual (Page 4)

Counter Shaft
Main Shaft
Fork Groove
Fork Groove
Roller Bearing
Retaining Ring
Left Support Block
Needle Bearing
Right Support
Block
Shifter Fork Groove Locations
Shifter Cam Assembly
Fig.8
Fig.10 Fig.9
6. When installing the Shifter Cam Assy., verify that four
locating dowels are in place on deck of transmission
case.
7. Raise the shifter cam pawl and place the shifter cam
assembly over the locating dowels. While aligning
the holes in the support blocks to the transmission
case, slide the shifter forks as necessary so that the
fork pins engage the channels in the shifter cam.
8. Start the SHC screws (with flat washers) by hand to
fasten the right and left support blocks to the trans-
mission case. Then tighten the four support block
SHC screws to 84-108 in-lbs (9-12 Nm) in a crosswise
pattern.
9. Shifter cam installation is as follow:
a. With the forks installed in their correct positions,
manually move the shifter forks so there is no gear
engagement & the transmission is in neutral.
(See Fig. 6)
b. With the shifter cam in the neutral position, the de-
tent arm roller will be in the shallowest notch.
(See Fig. 10)
10. Pawl adjustment as follows:
a. With the transmission in 3rd gear, move the shift le-
ver on the transmission forward and back. The pawl
should move an equal distance to the shift pins on
the shifter cam.
b. The adjuster screw is eccentric having a total of 1/2
turn of adjustment, so a small amount of rotation of
the eccentric screw moves the pawl accordingly.
c. When tightening the jam nut, be sure to hold the ec-
centric screw and then recheck the pawl movement.
NOTE:
The pin on the end of the eccentric adjusting screw
must pass through the slot in the pawl arm, it acts
as the shift stop.
(See Fig. 13)
11. Use a new top cover gasket and align the holes of
the gasket , top cover with those in the transmis-
sion case. Install the five SHC screws and tighten to
84-108 in-lbs (9-12 Nm). The long screw is installed in
the center hole on the left side of the top cover.
12. Be sure that the case is vented with a down facing
rubber hose via the fitting located in the side of the
top cover.