removel of T-18 output shaft - Off-Road Forums & Discussion Groups
Jeep-Short Wheelbase All discussion of short wheelbase Jeeps: CJ, TJ, YJ and JK

Reply
 
LinkBack Thread Tools Display Modes
post #1 of (permalink) Old 05-16-2005, 03:45 PM Thread Starter
Enthusiast
 
bostonyj7's Avatar
 
Join Date: Nov 2001
Location: Boston, Ma
Posts: 352
Thanks: 0
Thanked 0 Times in 0 Posts
 
removel of T-18 output shaft

I just got my AA for the T-18 to the D300 and its gives me a new output shaft for the trans. Im not sure how to go about replacing it. I dont want to screw anything up, was just rebuilt

I see the snap ring holding the output shft bearing in place. Not sure where to go from there
bostonyj7 is offline  
Sponsored Links
Advertisement
 
post #2 of (permalink) Old 05-16-2005, 04:14 PM
Keyboard Implanted
 
mbalbritton's Avatar
 
Join Date: Mar 2002
Location: Winston-Salem, NC
Posts: 3,833
Thanks: 0
Thanked 0 Times in 0 Posts
 
Re: removel of T-18 output shaft

you have to completly tear down teh Tranny to replace the output shaft....

you'll need an asortment of tools, a good manual to follow a, a 6-12 pack of beer and a good sense of humour... I've been through 3-4 of them, they really ain't all that bad.
mbalbritton is offline  
post #3 of (permalink) Old 05-16-2005, 06:20 PM Thread Starter
Enthusiast
 
bostonyj7's Avatar
 
Join Date: Nov 2001
Location: Boston, Ma
Posts: 352
Thanks: 0
Thanked 0 Times in 0 Posts
 
Re: removel of T-18 output shaft

what do you think that will run in a trans shop
bostonyj7 is offline  
Sponsored Links
Advertisement
 
post #4 of (permalink) Old 05-16-2005, 06:27 PM
I Might Just Know What I'm Talking About
 
jdoggmoney's Avatar
 
Join Date: May 2003
Location: Nebraska
Posts: 1,806
Thanks: 0
Thanked 1 Time in 1 Post
 
Re: removel of T-18 output shaft

Pure guess here, $200-$250, if you have the tranny outof the jeep, as much as a rebuild if you don't. You can do it if your willing to try. [img]/ubbthreads/images/graemlins/grin.gif[/img]
jdoggmoney is offline  
post #5 of (permalink) Old 05-16-2005, 06:58 PM
Keyboard Implanted
 
mbalbritton's Avatar
 
Join Date: Mar 2002
Location: Winston-Salem, NC
Posts: 3,833
Thanks: 0
Thanked 0 Times in 0 Posts
 
Re: removel of T-18 output shaft

that T-18 really ain't all that bad. get you a haynes Manual, Some Snap ring pliers, a small assortment of general tools, some grease, a 1-1/8" wooden dowel cut to length specified in the Haynes manual, and go to town.

you'll come come out cheaper and more knowledable.
mbalbritton is offline  
post #6 of (permalink) Old 05-16-2005, 10:50 PM
Keyboard Implanted
 
Aaron871's Avatar
 
Join Date: Feb 2003
Location: Homeless in the Hammers... / Mexico
Posts: 3,160
Thanks: 0
Thanked 1 Time in 1 Post
 
Re: removel of T-18 output shaft

[ QUOTE ]
what do you think that will run in a trans shop

[/ QUOTE ]

Tranny shop told me $800 to change the input (which is easier than the output)

Here is the jest of it, get a manual.

pull the bearing retainer (front)
remove snap ring on input bearing
pull input bearing
pull the front shaft (listen for all the needle bearings to fall)
push that little pin out of the idler gear linkage
pull main shaft out
remove that nut on the output shaft
remove the snap ring on output
remove the output bearing
output shaft is them yours for the throwing
when reinstalling use heavy grease to hold all those needle bearings in place


Do it yourself, you wont believe how easy it is.
Aaron871 is offline  
post #7 of (permalink) Old 05-18-2005, 08:22 PM Thread Starter
Enthusiast
 
bostonyj7's Avatar
 
Join Date: Nov 2001
Location: Boston, Ma
Posts: 352
Thanks: 0
Thanked 0 Times in 0 Posts
 
Re: removel of T-18 output shaft

am into it now and I dont see the output shaft snap ring, got the front ring off and the input shaft gears arn't clearing it seems (I found the flat spot, just doesnt want to slide out).
bostonyj7 is offline  
post #8 of (permalink) Old 05-18-2005, 08:24 PM
Keyboard Implanted
 
mbalbritton's Avatar
 
Join Date: Mar 2002
Location: Winston-Salem, NC
Posts: 3,833
Thanks: 0
Thanked 0 Times in 0 Posts
 
Re: removel of T-18 output shaft

Did you drop the lower cluster Gear by tapping out the Cluster gear counter shaft? Did you get a haynes manual like I said? did you get the wooden dowel like I suggested to save having to futz with the needle bearings inside the cluster gear?????
mbalbritton is offline  
post #9 of (permalink) Old 05-18-2005, 09:46 PM
Keyboard Implanted
 
Aaron871's Avatar
 
Join Date: Feb 2003
Location: Homeless in the Hammers... / Mexico
Posts: 3,160
Thanks: 0
Thanked 1 Time in 1 Post
 
Re: removel of T-18 output shaft

T18 Rebuild Instructions with Adapter



All T18's are basically the same. The following will allow you to rebuild this transmission while adding an adapter.

Remove top cover, front bearing retainer and rear housing (2 or 4 wheel drive versions). Early "2" lever type units (identifiable by the rectangular top cover) have a tapered pin that retains the reverse shift fork located on the left side of the unit, locate and drive this pin out from the front of the transmission with a small punch. Tap the pivot that is retained by the pin you removed out from the inside of the unit, now remove the lever. The later T18 has 3 aluminum levers.

Remove snap rings from both front and rear shafts that retain the bearings. Using a puller, remove the front and rear bearings. Let the front input (maindrive) hangout through the front of the unit. Lift the mainshaft (output) forward and up through the top of the case. Note that there is a thrust washer on the front end of the mainshaft, this is for the loose needle bearings in the maindrive to thrust against, DO NOT lose this washer.

Remove the front shaft up through the case. Remove the flat retaining plate (rear of case) that is in-between slots in the counter shaft and the reverse idler gear shaft. Note the location of the "slots" on both shafts and the direction they are pointed, they must be the same when reinstalled. Drive the large countershaft (cluster gear) from front of case out through the back of case. Drive the idler gear shaft out the same direction from inside the case.

Clean, dry and inspect all parts. Grease the bearings or bushing inside the idler gear and reinstall shaft making sure the "slot" is the correct direction. The cluster gear has 2 rows of loose needle bearings, 4 washers and a sleeve. There is a thrust washer at the front of the cluster gear and a trust washer and spacer at the back of the cluster gear. Use heavy grease to hold the needle bearings in place inside the cluster gear, with the small washers in-between the rows of needle bearings and at the end of the needle bearings where they are exposed on both ends of the cluster gear.

Use the heavy grease to hold the front thrust washer against the case, slip the rear shaft into the case with just enough of it protruding inside to hold the spacer and the rear thrust washer in place. Gently roll the cluster gear into position between the thrust washers and drive the large pin through the case, check the direction of the "slot" before moving the shaft. Install the retaining plate between the 2 shafts.

Remove the gears form the mainshaft (output), taking careful note of how they are stacked .DO NOT ATTEMPT TO SLIDE THE 1ST REVERSE GEAR (big straight cut gear) OFF THE SYNCRO HUB, There are 3 balls with coil springs under this gear and they will fly out and either hurt you or get lost. If you have to replace this gear, you can use a couple of long metal gear driven hose clamps by clamping them over the three syncro dogs (plates under the sliding low and reverse gear, this will keep the parts from flying) Clean and dry the parts.

The mainshaft you are going to use must be clean (this will be the adapter shaft if you are using one). Make sure that the 3rd gear thrust is the same on both original and new shafts (some use a snap ring and thrust washer others have the thrust built on the shaft, if this is the case DO NOT try and use your old thrust washer). Install all gears and syncros on the new shaft.

Using heavy grease, install the needle bearings in the maindrive (input gear), put it in the case allowing it to hang out the front. Tip the mainshaft with gears up so that you can slide it into the case, grasp the front maindrive and the rear mainshaft and push them together (make sure the small thrust washer is inplace and the 4th gear syncro ring is lined up with the 3 notches engaged with the syncro "dogs"). Drive the front and rear bearings onto both shafts, the narrow bearing (20mm, some T18's use a wide 23mm bearing that is the same as the rear bearing) is the front bearing, install the snap rings.

If you have the reverse lever that goes in using the pivot (early style T18), install it now. Use a gasket sealer on the gaskets that are between the front bearing retainer and the rear adapter housing, install and tighten bolts and or nuts. If you have the 2nd design 3 lever cover make sure the nylon fork pads are inplace on all 3 levers. Use the gasket sealant for the top cover gasket and install the top cover, make sure that the transmission is in neutral. Line up the shift forks and bolt the cover down. It is ready to install.
Aaron871 is offline  
post #10 of (permalink) Old 05-18-2005, 09:50 PM
Keyboard Implanted
 
Aaron871's Avatar
 
Join Date: Feb 2003
Location: Homeless in the Hammers... / Mexico
Posts: 3,160
Thanks: 0
Thanked 1 Time in 1 Post
 
Re: removel of T-18 output shaft

Input shaft comes out the top of the case, NOT out the front, you may damage it doing that.

Post up some pic's.
Aaron871 is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Off-Road Forums & Discussion Groups forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



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 On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome