Learning to rebuild a trans - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


General GM Chat When starting new posts, please specify YEAR, MAKE, MODEL, ENGINE type, and whatever modifications you have made. Chat about all things GM (and related cars). Off-topic stuff should be in the Lounge, and all Model specific mechanical problems should be posted in the proper forum.

Reply
 
 
 
Thread Tools Search this Thread
Old 11-23-2009, 04:54 PM   #1
Retired Senior Admin

Expert Gearhead
Thread Starter
 
Danthurs's Avatar
 
Join Date: May 2006
Location: Sheboygan Wisconsin
Posts: 29,661
Thanks: 0
Thanked 16 Times in 13 Posts
Danthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to all
Default Learning to rebuild a trans

I've had a trans sitting here for nearly a year, got a good deal on it and figured I'd get to it some day. Well, today was that day.

Got it mounted on the stand and started removing the side cover.
Name:  PB230330.jpg
Views: 18
Size:  114.0 KB

Got all the bolts out.
Name:  PB230331.jpg
Views: 20
Size:  125.9 KB

Before removing the cover I flipped it and removed the diff cover.
Name:  PB230332.jpg
Views: 20
Size:  129.9 KB

Comes off easy enough.
Name:  PB230333.jpg
Views: 20
Size:  129.9 KB

One HD diff.
Name:  PB230334.jpg
Views: 22
Size:  132.1 KB

Comes out easy too, output shaft came with it, I think that was to go out the other way.
Name:  PB230335.jpg
Views: 16
Size:  107.8 KB

And on the bench with it.
Name:  PB230336.jpg
Views: 18
Size:  80.6 KB

Removing sprockets.
Name:  PB230337.jpg
Views: 18
Size:  131.5 KB

Pulling the shaft.
Name:  PB230338.jpg
Views: 17
Size:  100.8 KB

Flip t back over and remove the cover
Name:  PB230339.jpg
Views: 19
Size:  162.7 KB

Here'* the innards Sensors, and valve body
Name:  PB230340.jpg
Views: 17
Size:  181.4 KB

Removing the wiring harness.
Name:  PB230341.jpg
Views: 14
Size:  152.6 KB

Pulled the pressure switch.
Name:  PB230342.jpg
Views: 18
Size:  145.0 KB

Now off with the oil pump.
Name:  PB230343.jpg
Views: 17
Size:  167.8 KB

And finally the valve body.
Name:  PB230344.jpg
Views: 16
Size:  118.1 KB

Now we have the gears.
Name:  PB230345.jpg
Views: 16
Size:  166.7 KB

4th gear clutch
Name:  PB230346.jpg
Views: 20
Size:  155.0 KB

Hmm, what have we hear? a trans from a 98 with a 4th gear clutch shaft with 09/27/04 date on it. Looks like this trans has been repaired with a new hardened clutch shaft.


Removing more parts.
Name:  PB230348.jpg
Views: 18
Size:  143.6 KB

Input clutch drum
Name:  PB230349.jpg
Views: 15
Size:  116.2 KB

A band
Name:  PB230350.jpg
Views: 15
Size:  144.4 KB

I just keep pulling more parts out.
Name:  PB230351.jpg
Views: 16
Size:  175.2 KB

See, it'* like magic.
Name:  PB230352.jpg
Views: 19
Size:  175.3 KB

Reverse Reaction Shell
Name:  PB230353.jpg
Views: 18
Size:  159.1 KB

Another band.
Name:  PB230354.jpg
Views: 15
Size:  164.1 KB

It'* the last one, I swear.
Name:  PB230355.jpg
Views: 16
Size:  172.7 KB

Flip the trans over again to remove the pan.
Name:  PB230356.jpg
Views: 19
Size:  122.7 KB

Chris showed up to change his thermostat.
Name:  PB230358.jpg
Views: 18
Size:  119.4 KB

So much easier then when your laying under the car.
Name:  PB230359.jpg
Views: 19
Size:  117.3 KB

Last of the parts
Name:  PB230360.jpg
Views: 15
Size:  146.3 KB

Now that is a big pile of parts.
Name:  PB230361.jpg
Views: 20
Size:  139.9 KB

Taking it apart was easy, now to put it back together.
Danthurs is offline   Reply With Quote
Old 11-23-2009, 05:01 PM   #2
Senior Member
True Car Nut
 
sawgunner's Avatar
 
Join Date: Jan 2009
Location: Dover, NH
Posts: 7,122
Thanks: 0
Thanked 0 Times in 0 Posts
sawgunner is on a distinguished road
Default

yup the fun part is always putting it back together good thing you took pictures
sawgunner is offline   Reply With Quote
Old 11-23-2009, 05:05 PM   #3
Retired Senior Admin

Expert Gearhead
Thread Starter
 
Danthurs's Avatar
 
Join Date: May 2006
Location: Sheboygan Wisconsin
Posts: 29,661
Thanks: 0
Thanked 16 Times in 13 Posts
Danthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to all
Default

And I have a very detailed manual on rebuilding transmissions.
Danthurs is offline   Reply With Quote
Old 11-23-2009, 05:32 PM   #4
Member
Posts like a V-Tak
 
Join Date: Apr 2009
Location: Indy
Posts: 62
Thanks: 0
Thanked 0 Times in 0 Posts
Tedro951 is on a distinguished road
Default

Go, Dan, go! I'm dying to do an automatic, and since mine is nearing 200K I'm thinking of buying a donor to rebuild before mine goes.
Tedro951 is offline   Reply With Quote
Old 11-23-2009, 06:15 PM   #5
Retired Senior Admin

Expert Gearhead
Thread Starter
 
Danthurs's Avatar
 
Join Date: May 2006
Location: Sheboygan Wisconsin
Posts: 29,661
Thanks: 0
Thanked 16 Times in 13 Posts
Danthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to all
Default

It'* really not all that hard. Having the engine stand and the bracket I made, thanks to billboost for that idea, and a few tools, it'* rather a easy job. Get a trans service manual, big help there. Just wear rubber gloves and keep everything real clean. I plan to put this one back together, then rip it down again, and do this several times.
Danthurs is offline   Reply With Quote
Old 11-23-2009, 07:32 PM   #6
Senior Member
Certified GM nut
 
SignOfZeta's Avatar
 
Join Date: Mar 2005
Location: New Milford, CT
Posts: 2,284
Thanked 16 Times in 13 Posts
SignOfZeta has a spectacular aura aboutSignOfZeta has a spectacular aura about
Default

Not bad! I could give myself a new transmission, if I only I had the: space, stand, tools, manual, donor transmission, jack stands, lift…

Best of luck on your rebuild!
SignOfZeta is offline   Reply With Quote
Old 11-23-2009, 07:36 PM   #7
Retired Senior Admin

Expert Gearhead
Thread Starter
 
Danthurs's Avatar
 
Join Date: May 2006
Location: Sheboygan Wisconsin
Posts: 29,661
Thanks: 0
Thanked 16 Times in 13 Posts
Danthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to all
Default

Well, best to start a list.
Danthurs is offline   Reply With Quote
Old 11-23-2009, 08:33 PM   #8
Senior Member
Certified GM nut
 
SignOfZeta's Avatar
 
Join Date: Mar 2005
Location: New Milford, CT
Posts: 2,284
Thanked 16 Times in 13 Posts
SignOfZeta has a spectacular aura aboutSignOfZeta has a spectacular aura about
Default

Quote:
Originally Posted by Danthurs View Post
Well, best to start a list.
Sure. Here'* the condensed version:
  • BillBoost'* garage
  • Contents of BillBoost'* garage.

Someday, but not today.
SignOfZeta is offline   Reply With Quote
Old 11-23-2009, 08:42 PM   #9
Senior Member
True Car Nut
 
sawgunner's Avatar
 
Join Date: Jan 2009
Location: Dover, NH
Posts: 7,122
Thanks: 0
Thanked 0 Times in 0 Posts
sawgunner is on a distinguished road
Default

Quote:
Originally Posted by SignOfZeta View Post
Sure. Here'* the condensed version:
  • BillBoost'* garage
  • Contents of BillBoost'* garage.

Someday, but not today.
good list
now can you make it happen without bill thinking that your taking over?
sawgunner is offline   Reply With Quote
Old 11-23-2009, 08:51 PM   #10
Senior Member
Posts like a Northstar
 
Join Date: Oct 2009
Location: Boston Mass
Posts: 684
Thanks: 0
Thanked 0 Times in 0 Posts
sgp358 is on a distinguished road
Default

Dan, when you rebuild this trans, make sure that you tighten the clutch clearance in the 2nd and 3rd clutch. GM does not give a spec for this, but we use 1 or 2 oversized steels for the 2nd clutch and use a few early 440-T4 3rd clutches to tighten things up in the 3rd clutch.
sgp358 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
PCM Learning related to pulley swap 2000SilverBullet Performance, Brainstorming & Tuning 22 03-08-2006 02:31 AM
Finally learning how to use Photo Shop!!! Peterg22000 Lounge 7 02-06-2006 01:26 PM
Old dogs learning new tricks... Damemorder Lounge 1 08-29-2004 01:27 AM
Learning CAN be fun!!! MOS95B Lounge 1 03-01-2004 11:34 AM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 11:16 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.