Installing Bearing Housing Bearings
NOTES
• Always replace bearing housing bearing if the shaft was pressed out.
• Always use a plate to support the bearing housing when pressing in bearings.
• When pressing new bearings into bearing housing, press on the outside diameter of the bearing side with the numbers stamped on it.
1. Support the bearing housing from the opposite side at the bearing bores with a flat plate.
2. Position new bearing over bore with number side UP.
3. Press the outer diameter of the bearing until the bearing seats in the bore.
4. See Figure 6-26. Install beveled retaining ring (1) with the flat side against the bearing.
Countershaft
NOTES
• Replace retaining ring and all gear roller bearings with new parts during assembly. Lubricate needle bearings and races with SCREAMIN’ EAGLE ASSEMBLY LUBE before installation.
• Install securing segments so the side with the rounded edge is facing up and the side with the straight edge is down. Verify segments fully engage grooves in countershaft.
• One side of the 2nd, 3rd and 4th gear lock rings have a waved, stepped face. The waved, stepped face always faces the securing segments.
1. See Figure 6-25. Install new needle bearing, countershaft 4th gear (4), guiding hub (2), dog ring (3) securing segments and 4th gear lock ring (1) on countershaft.
2. See Figure 6-24. Install new needle bearing, countershaft 3rd gear (3), internal spline washer (2) and securing segments (1).
3. See Figure 6-23. Place countershaft 3rd gear lock ring over securing segments.
NOTES
• In next step, the side of the guiding hub with the deeper counterbore faces countershaft 2nd gear.
• Countershaft 2nd gear bearing is wider than other bearings on the countershaft.
4. See Figure 6-22. Install new needle bearing, countershaft 2nd gear (4), guiding hub (2), dog ring (3) and securing segments (1) on countershaft.
5. See Figure 6-21. Place lock ring over securing segments with the stepped face of the lock ring against the securing segments.
6. See Figure 6-20. Install new needle bearing, countershaft 1st gear (2) and washer (1).
NOTES
• If installing countershaft only, hold countershaft 3rd and 4th gear shift dog up while pressing bearing housing bearing on to countershaft.
• Failure to press on inner bearing races while pressing bearings on the shafts will damage the bearings.
7. See Figure 6-28. Place countershaft in an arbor press supporting countershaft 6th gear. Using a suitable sleeve, press on inner bearing race until bearing housing bearing contacts countershaft 1st gear washer.
Mainshaft
NOTES
• Failure to press on inner bearing race while pressing bearing on the shaft will damage the bearing.
• See Figure 6-29. Hold dog ring so that it is engaged with countershaft 3rd gear during the press procedure. Otherwise bearing and gear damage is possible.
1. Place mainshaft in an arbor press, supporting mainshaft 4th gear.
2. Place rear bearing housing bearing over mainshaft. Using a suitable sleeve, press on inner bearing race until bearing housing bearing contacts mainshaft 1st gear.
3. See Figure 6-18. With bearing housing on end (shafts pointing upward), install new bearing and mainshaft 5th gear (4).
4. Verify guiding hub counterbore is facing mainshaft 5th gear. Install guiding hub (2) and dog ring (3).
5. Install new retaining ring using TRANSMISSION SHAFT RETAINING RING PLIERS (Part No. J-5586A) (1).
Shifter Cam/Shifter Forks
1. Using dog rings, lock two gears in place. Temporarily place transmission assembly into transmission case.
2. Install new nuts on mainshaft and countershaft. Tighten to 85-95 ft-lbs (115.3-128.8 Nm).
3. Remove transmission assembly from case.
4. Place bearing housing on bench with shafts pointing upward.
5. If removed, install detent arm assembly:
a. See Figure 6-30. Clean detent screw mounting hole in transmission bearing housing.
b. Assemble new detent screw, detent arm, sleeve and detent spring. Make certain to orient spring and detent arm as shown.
c. Mount detent assembly in bearing housing as shown.
d. Tighten to 120-150 in-lbs (13.6-17.0 Nm).
6. See Figure 6-31. Using screwdriver (1), pull detent arm back to allow installation of shift cam assembly.
7. Install shift cam assembly (5).
8. See Figure 6-32. Install lock plate (2) and new lock plate fasteners (3). Tighten to 57-63 in-lbs (6.4-7.1 Nm).
NOTE
See Figure 6-33. The forks are different from each other and are identified as shown.
9. See Figure 6-34. Insert shifter fork (2) into the slot of the dog ring in between mainshaft 5th and 6th gear.
10. Slide long shift shaft through 5th and 6th gear shifter fork.
Install shaft in hole in bearing housing.
11. Install short shift shaft:
a. Insert shifter fork (6) into the slot of the dog ring in between countershaft 3rd and 4th gear.
b. Insert shifter fork (9) into the slot of the dog ring in between countershaft 1st and 2nd gear.
c. Slide short shift shaft through countershaft shifter forks.
d. Install shaft in hole in bearing housing.
NOTE
If main drive gear was removed, install it now. See 6.9 MAIN DRIVE GEAR AND BEARING.
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