Inner Primary Race

Previous | Home | Next
The Inner Primary bearing race is pressed onto the transmission input shaft.  The rest of the bearing (rollers and outer race) are pressed into the inner primary case.  So, when one takes the inner primary case off the motor, the outer race and rollers come with it; but the inner race is left on the transmission input shaft.  However, the inner race is only a press-fit onto the shaft.  There's nothing holding it in place.  So it can "walk" on the shaft; usually towards the transmission, making it impossible to pull off; even with the special tool.  Mine had done that. 

After a frustrating couple of hours of fumbling around  with attempts to make a tool that would remove the race, I finally got help from the forum.  "Just cut it off."  "You're not going to use it again anyway."

The advice was right and within 5 minutes, the race was off in my hand.  I ended up grinding away at it with a right-angle grinder until it weakened its grip and slid right off of the input shaft.  

The first picture below is immediately after the grinding weakened and loosened the race.  It is now about 1/4" away from the output shaft. 
 

Previous | Home | Next