final drive installation

[DannyP]

Hey guys I am trying to instal the final drive and cannot get the driveshaft into the ujoint is there a trick to it. It slide right out without any problems. I have looked at the rear end service and in the book but am have a difficult time getting them together. any hints would be great

[Hook#3287]

Yeah, I went down this road a couple decades ago.

The swing arm should be as level as you can get it.

A little finagling and it should pop in.  Hopefully.

[DannyP]

The drive shaft just popped right in. I have no explaination of why after about 30 minutes of doing the same thing. Maybe the prayers maybe the cursing I don't know......

[Jess from VA]

Edit: Well I'm late again.  (30 minutes isn't bad) 

It's always a PITA Danny.  (not as big a PITA as the Ujoint boot replacement, and the trick with that is to use spray silicone and fold the lips back on the bigger end that goes on the swingarm when installing.)

The advice for the shaft is to lift the swingarm up level (maybe tie it up), so the shaft is making a straight(er) shot at the ujoint.  Twist, stab, wiggle, repeat.  (same advivce on installing the boot)

And find a short stool so you can sit while fishing around for a while.

This was a very nice link with step by step pictures of rear end service and assembly that I actually printed out years ago.  It's now disabled, but maybe one of our computer gurus can find it on a Wayback Machine thingy.  Each picture enlarges nicely when clicked.

http://www.rattlebars.com/mtz/ujoint.html

Another piece of advice from this forum (Ricky-D)

Most damage to the bearing cup can be attributed to bad mechanical practice.

Namely allowing the swingarm to come to stop (bottom out) after removing the rear shock absorber bolts.

The edge of the cups are extremely fragile due to the machining for the seals.

Many threads have warnings about supporting the swingarm when disconnecting the shocks.

[98valk]

"and the trick with that is to use spray silicone"

don't use the spray which has other additives including petroleum distillates which can deteriorate the boot.

so best to use silicone grease in the tube without the bad additives.

[old2soon]

      Sorta kinda like when I was an Aiorcraft mech in The Navy. Fiddle fart around with something either on removal or install and no joy!   An olvd ganarly Chief-E 7 thru 9-told me walk away go git a cup a coffee and a smoke then come back and tackle it again. Usually THAT worked!   What til ya gotta R & R an altenator!   RIDE SAFE.

[da prez]

  As was said , swing arm level , trans in gear and turn the flange while doing the wiggle push.  When it goes in to easy , pull it out , have a beer and do it again.

                                                          da prez

[Joe333x]

Edit: Well I'm late again.  (30 minutes isn't bad) 

It's always a PITA Danny.  (not as big a PITA as the Ujoint boot replacement, and the trick with that is to use spray silicone and fold the lips back on the bigger end that goes on the swingarm when installing.)

The advice for the shaft is to lift the swingarm up level (maybe tie it up), so the shaft is making a straight(er) shot at the ujoint.  Twist, stab, wiggle, repeat.  (same advivce on installing the boot)

And find a short stool so you can sit while fishing around for a while.

This was a very nice link with step by step pictures of rear end service and assembly that I actually printed out years ago.  It's now disabled, but maybe one of our computer gurus can find it on a Wayback Machine thingy.  Each picture enlarges nicely when clicked.

http://www.rattlebars.com/mtz/ujoint.html

Another piece of advice from this forum (Ricky-D)

Most damage to the bearing cup can be attributed to bad mechanical practice.

Namely allowing the swingarm to come to stop (bottom out) after removing the rear shock absorber bolts.

The edge of the cups are extremely fragile due to the machining for the seals.

Many threads have warnings about supporting the swingarm when disconnecting the shocks.

Here you go. I learned how to use the way back machine after getting my Valkyrie since so much info is now in dead links.
https://web.archive.org/web/20160523032210/http://www.rattlebars.com/mtz/ujoint.html

[Jess from VA]

Thanks.