Stuck w/Trans install
Thread Starter
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Senior User
Joined: Nov 2014
Posts: 208
Likes: 1
From: North Pole,Alaska
Stuck w/Trans install
I just put a new clutch (NP435) in my 76 HB, I have the transmission almost all the way seated, However I am looking for tips on getting the shaft seated into the pilot bushing. I cant seem to accomplish this last little task in order to finish. I did verify prior to installation that the pilot bushing fit on the shaft. Any tips or tricks would be helpful.
Hotshot
Joined: Apr 2009
Posts: 14,333
Likes: 247
From: Stanley, VA
Did you use an alignment tool to make sure the clutch disc was centered with the pilot bearing before you tightened the pressure plate down?
This is necessary to keep from having to fight the trans to get it to go in.
This is necessary to keep from having to fight the trans to get it to go in.
Thread Starter
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Senior User
Joined: Nov 2014
Posts: 208
Likes: 1
From: North Pole,Alaska
Absolutely did, everything else slid together super easy, but I can't seem to get that last little bit
Elder User
Joined: Nov 2009
Posts: 891
Likes: 0
From: Mayfield, KY
Not familiar with the NP435 but mine has clutch fork with throwout bearing.....when I replaced my clutch I could not get that sucka up to the bell housing that final inch. Finally put a little lithium grease on shaft and viola it slipped in. I replaced the boot when I rebuilt the motor and hasn't been an issue since......I guess that new boot holds it in place better than the dry rotted one.
Junior User
Joined: Aug 2012
Posts: 64
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The pilot bushing inside the back of the crank creates an air pocket. When i did a clutch on my highboy with a np435 i had to get behind the transmission and push or kick torwards the motor to overcome the air pocket. if that doesent work try using a screwdriver to put it in gear so you can turn the yoke to spin the input shaft and try pushing in while turning the yoke maybe itll slip in. Dont force it with the bolts or else youll have even bigger problems unless the input shaft is aligned with the pilot bushing
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Moderator & parts slinger
Joined: Feb 2007
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From: S/W Missouri, Polk county
Are you using trans alignment shafts? AKA extra long bolts with the heads cut off and bench grinder rounded ends? In the pic the ends are fresh cut off and not ground on yet.
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Tuned
Joined: Sep 2010
Posts: 279
Likes: 8
At the dealer when one was difficult to seat all the way, we would either hook up the clutch linkage or just pry the clutch fork back to push in the clutch, that allows you free up the clutch disc so you can wiggle the pilot shaft in the bearing, it took two people and was a wrestle, that method usually worked, (only after one guy fought it for a hour) if not pull it back out and re-align the disc and try again, this trans was already in the truck? not parts being assembled for the first time.
Elder User
Joined: Nov 2009
Posts: 891
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From: Mayfield, KY
Will have to try that on next stuck one....
Elder User
Joined: Nov 2009
Posts: 891
Likes: 0
From: Mayfield, KY
Ideas like this is why I love this forum......great post, thanks!
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