Output Shaft Removal for 2002 Boxster S G86 Transmission

[AR|Groundzero]

I was having the dreaded 2nd gear slip so my friend and I took the transmission out of the car for a closer inspection. We have the transmission out and on a bench and were able to identify the issue. The issue is in fact the synchro and possibly 2nd gear.

Now here is the question. We have been unable to get the tapered bearing out of the top of the output shaft in order to get to 2nd gear. Does anyone know how to get this tapered bearing out? I have attached a photo for your review.

[jcb986]

They are either pressed on are held in place by a snap ring...snap rings should be a certain points to hold assemblies in there right position. Get a diagram be fore you start disassembling it.

[AR|Groundzero]

We figured it out. We had already removed the snap rings and 2 spacers. The gears needed to be pulled out using a kukko gear puller in 2 stages. In stage one, first gear and all components above the gear were removed. In stage two, second gear and all remaining components were removed. A significant amount of force was required to remove the gear puller drive screws via a pneumatic impact wrench set to 110 psi. The estimated torque required to move the bearings along the shaft is calculated at 305 foot pounds which would generate 3660 pounds of force per inch. The resultant force on the ½ inch shaft of the gear pullers is 7,320 pounds or 3.66 tons of force.

We removed the gears and noticed that second gear was damaged. We replaced the gear and syncro and reassembled. We were sure to test the transmission on the bench before we reinstalled it. While the transmission was out we replaced the IMS, Rear Main Seal, Clutch, and CV Boots.

We are working on a complete article detailing our adventure.

In all the job took about 5 days. But my Boxster shifts like butter and has never driven better.

[nefarious986]

*thumbs up* & awaiting write-up .. not that I'll ever have the balls to attempt this myself .. but love to read about other ppl's exploits ..

[wanna986]

Originally Posted by AR|Groundzero

We are working on a complete article detailing our adventure.

Congrats and please do take the time to do the write-up. Where did you source the puller?

[AR|Groundzero]

I got lucky and sourced the puller from an area independant mechanic shop on loan. Because of the space between the gears (see picture in the post below) you have to have a gear puller with thin feet. I used a Kukko gear puller.





Update, I have been driving the car for a month and it is absolutely perfect!

[AR|Groundzero]

Oops, I almost forgot. Because of the hollow shaft in the Boxster S transmission, we had to create a tool to allow the puller to have somewhere to apply the downforce.







I am still working on the article. There is a lot of data so it is taking some time. In the meantime if you have any questions please ask.

[AR|Groundzero]

I have had some inquiries about the parts I replaced during the project. Here is the list:

• RMS
• IMS
• CV Boots
• 2nd Gear
• 2nd Gear Syncro
• 2nd Gear Selector Sleeve
• Clutch
• Pressure Plate
• Throwout Bearing
• Brake Switch
• Primed and Painted the Exhaust
• HID Driving Lights (Bonus)

[wanna986]

Fantastic!

[wanna986]

Groundzero, please check your private messages.

[landrovered]

Very happy to see this I am looking at doing the same on my car. If you don't mind me asking...What was the cost of the transmission parts ?

[AR|Groundzero]

The transmission parts cost as follows:


Gear 996.302.942.00 $385
Shift Sleeve 996.304.061.02 $450
Syncro Sleeve 996.304.611.00 $130

[AR|Groundzero]

Thank you for your patience. Here is the article. Let me know if you have any questions.

[Meir]

this is awesome. file saved.
my 2nd gear is fine (for now) but i'm sure some people want to know how much its going to cost them to ship their transmission to you.

[AR|Groundzero]

lol, that is funny. It was all worth it and it is everytime I put the car in second and accelerate!

YeeHaw!

[wanna986]

You've made a significant contribution to the data base!

[AR|Groundzero]

I love to help the Boxster community. I have saved a lot of time and money from others articles.

Thanks for the encouraging words.

[Amille28]

Does anyone have a copy of the article. Rebuilding 2nd gear on a 996 and need to do the same job. Thanks!

[AR|Groundzero]

Thanks for reaching out. I have 20k miles on the car since the repair and it has NEVER slipped a gear and is still running as smooth as butter.

Here is a Dropbox link to all documents I used as well as an article that my friend and I put together to describe the process.

Boxster Transmission Repair Documents

Let me know if you need anything and happy repairing!

[Gelbster]

Thanks so much for putting the time and effort into publishing all this info.It was a lot of extra work for the benefit of the 996/Boxster community.As far as I know this is the only such diy guide to this important project.
Would you happen to be selling an old 944 strut part?? I need one and when I am done I'll pass it on to the next Forum member who needs it .I'll also add to your excellent write up.
I am trying the pulling with a Harbor Freight 12 ton puller.It will be interesting to see if it will fit .Certainly a little grinding will be required to fit. Yes, it was a lot cheaper than the German Kuko puller!But only if it works.
Surprised not to see the sealed bearings in your parts purchased list. I think I recall you bought the parts from Eric at Gbox?
Thanks once again for your work.
Mod: That work should be preserved in a special section on this Forum ?