Hot Rod Forum : Hotrodders Bulletin Board

Hot Rod Forum : Hotrodders Bulletin Board (http://www.hotrodders.com/forum/)
-   Transmission - Rearend (http://www.hotrodders.com/forum/transmission-rearend/)
-   -   5 SPD manual wont install all the way (http://www.hotrodders.com/forum/5-spd-manual-wont-install-all-way-91147.html)

KevinDeFouw 06-06-2006 06:04 PM

5 SPD manual wont install all the way
 
I have a 1990 GMC sierra with a 5 spd manaul trans and i replaced the clutch and piolt bearing now the trany wont go back in all the way. seems like the imput shaft is engaging the clutch splines but it wont go in the Piolt bearing? ANY TIPS/TRICKS ARE GREATLY APPRECIATED THANKS

johnnya 06-06-2006 07:46 PM

If it stopped about 1/2" from all the way, it's probably the pilot bushing isn't exactly lined up and the trans input shaft isn't able to go into it.
I've had many experiences with just that sort of thing, even when you use a line-up tool.
If you can get someone to push the clutch pedal down it might go, or if you
don't have any help, you can leave the pressure plate bolts loose (just snug, so the clutch disc can move a little) and you might be able to get it to go all the way. Of course, then you'll have to take the trans back out and remove the bellhousing so you can tighten the bolts, but it should still be able to go in afterwards.
Or you could try pulling it in gently with the transmission mounting bolts.
That's what most people do.
JA

fearsomefairmont 06-06-2006 08:30 PM

Sometimes tough
 
Hey,
It can sometimes be very difficult to get the trans in all the way even when they are aligned almost perfectly.

I had similar troubles while changing the clutch in a '93 F-150 with an M5R2 5-spd, probably the same transmission. It has an integral bellhousing, and when in the trans tunnel it was a tight fit with no wiggle room. Not to mention, the dowel pins were extremely tight, and the input shaft seemed like it would NEVER go in.

I ended up getting it aligned correctly, and then using several C-clamps around the bellhousing to gradually pull it onto the dowel pins and insert the input shaft. It worked like a charm, and after it was on far enough, the bolts were able complete the job.

All it took was a little ingenuity. If the trans is not integral with the bellhousing, DO NOT attempt to pull the trans on by tightening the bolts. You will break the ears off the case.

Good luck,
Andy

Greg55_99 06-08-2006 05:37 AM

Try putting a wrench and socket on the crankshaft bolt and turn the engine over by hand. That may help seat the input shaft. Also make sure you've installed the clutch disk the right way around. Some clutch disks have the hub offset towards the engine and if it's pointing at the tranny end, it will bottom out on the front bearing retainer collar.

Greg

sbchevfreak 06-08-2006 12:23 PM

Quote:

Or you could try pulling it in gently with the transmission mounting bolts.
Not a good idea. Do you have the trans in gear? If so, you can turn the output shaft to line the splines up. Also, if the bushing is peened at all, it will make the install much harder.

Jmark 06-08-2006 02:10 PM

Quote:

Originally Posted by johnnya
If it stopped about 1/2" from all the way, it's probably the pilot bushing isn't exactly lined up and the trans input shaft isn't able to go into it.
I've had many experiences with just that sort of thing, even when you use a line-up tool.
If you can get someone to push the clutch pedal down it might go, or if you
don't have any help, you can leave the pressure plate bolts loose (just snug, so the clutch disc can move a little) and you might be able to get it to go all the way. Of course, then you'll have to take the trans back out and remove the bellhousing so you can tighten the bolts, but it should still be able to go in afterwards.
Or you could try pulling it in gently with the transmission mounting bolts.
That's what most people do.
JA


Yep, what he said! LOL Been there, done that, got-er-done!

56Maynard 06-08-2006 02:44 PM

Any attempt to pull the tranny home with a bolt will result in the bolt breaking the tranny case at the bolt hole. Dont do that.

Check to confirm that the pilot bearing's inner diameter is larger than the outer diameter of the front main shaft where the bearing rides. If it does fit, check the alignment of the bellhousing as it may be off a little. If it is off a little and you force it together anyway be prepared to rebuild that tranny in about 40,000 miles.

Take your time and do it right.

T-bucket23 06-08-2006 05:30 PM

Its always a good idea to check to be sure the new pilot bushing fits on the transmission input shaft before driving it into the flywheel. Could be the wrong bushing.

NEVER drag it in with the bolts, you are just asking for a headache and something will break.

bigtim 06-08-2006 06:05 PM

yep been there done that


All times are GMT -6. The time now is 05:26 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.