VW Vortex - Volkswagen Forum banner
1 - 16 of 16 Posts

·
Registered
Joined
·
2,567 Posts
Discussion Starter · #1 ·
I have to replace the bearings in my 1991 Passat 2.0 4 cyl. I would like to just buy the bearings at a local bearing shop. Does anyone have a complete list of the bearing numbers for this tranny? Or does anyone know a source, preferably Canadian, for a complete bearing set?
Thanks.
 

·
Registered
Joined
·
2,567 Posts
Discussion Starter · #2 ·
Re: Need bearing numbers for 02A Tranny (PASHAT)

"Well Pashat, did you get those bearings off?"
Pashat - "Yes I did. The one on the bottom of the output shaft was a witch with a capital "B""
"Did you get some bearing numbers that you would be willing to share with others who own a 02A AYK dode transmission?"
Pashat - "Sure. 'Top' refers to the part of the transmission that is furtherest from the engine. Here they are: Input shaft (connecting to the clutch) Top: Timken Bearing JXC25640CB and race JXC25640D
Input shaft Bottom: Timken Bearing LM12749. Output shaft (Between the input shaft and the differential) Top *** Bearing 310-6961. (This bearing rides on a straight cylinder race, not a tapered race) Bottom L45449 ( 5 might actually be an 8 as it was very hard to read). Race is a nightmare to remove, so I left it. Differential Bearing is LM300849. I did not remove that race yet, but hopefully with this information all of the main bearing should be able to be figured out. There is also a few needle bearing at the top ends of the input shaft and the output shaft for the 5th gear. These are plastic and fry easily if there is any heat. I think that these are best obtained from the dealer."
"Thanks Pashat. Hopefully someone will find this useful at some point."
 

·
Registered
Joined
·
2,567 Posts
Discussion Starter · #3 ·
I noticed that the word that begins with an F, ends in a G and has an A in between was asterisked out of my previous post. This was not a reference to a particular sexual orientation, but to the Schaeffler Group brand of bearings, F.A. G.!
 

·
Registered
Joined
·
2,567 Posts
Discussion Starter · #4 ·
Re: (PASHAT)

The top bearings for both the output shaft and the input shaft are dealer only bearings. I could not get them even at a specialized bearing shop. The good news is that they were not too much. The differential bearing and the bottom bearings on both the input and output shaft were both available from a bearing shop as a special order. I believe that the bearing for the input shaft near the clutch was very common and they had one in stock.
 

·
Registered
Joined
·
2,567 Posts
Discussion Starter · #5 ·
Re: (PASHAT)

Their are two bearing races (cups) that normally go with the bearing cone for the output shaft. The bearing cup that is needed is a L48410. I could be wrong about the 8...it could be a 5 or a 2, but it is the last two digits that are important. This is the recessed cup for the output shaft....the one that is a real pain to get out if you don't have an internal puller. I bought an inexpensive one and ground it down so that it had sharpened flats to slide under the bearing race and pull it out. There is a shim under there that you need to be careful to save. The aluminum transmission body is molded so that the shim is held up off the base of the cavity enough to fit something under there. I said in a previous post that the bearing for the input shaft bottom was the one that was common. I think I was mistaken as I believe that it is this one that is the common one...the one for the bottom of the output shaft.
The race for the bottom of the input shaft is JLM187188. All of these are timkin bearings.
EDIT - I think that bearing for the bottom of the input shaft is actually a JLM127120. I am really uncertain about the last number. It could also be a 5
EDIT2 - Further research has indicated that this bearing race is actually JLM12712B and is only available as a set from VW with bearing LM12749. This means that the only non dealer bearins available for the 02A are the bearings for the differential, and the bearing at the bottom of the output shaft. All other bearings are only available from the dealer, I think, but I did not check on the needle caged bearings.
Hope this helps someone.

Modified by PASHAT at 9:17 PM 11-11-2006


Modified by PASHAT at 8:51 AM 11-13-2006
 

·
Registered
Joined
·
15,848 Posts
Re: (PASHAT)

Quote, originally posted by PASHAT »
Hope this helps someone.

I appreciate it, even if I can't use the info now. I have the info on the 020 bearings, but none of the numbers match up. Everything sounds about the same, L and LM series tapered bearings and cups, and the *** and INA bearings for the roller bearings, and most likely INA or maybe SKF for those plastic caged needle bearings.
The dealer only bearings can be had through World Impex, and as you've found, specialist bearing suppliers can source the tapered bearings easily enough.
I had troubles locating German manufactured bearings. Bearings imported into the US are brought in from asia or south america, even those from German parent companies like ***. All of the small *** bearings under a certain size are produced in asian factories, while the larger bearings are still made in Germany. Febi thankfully has the smaller bearings still coming from Germany, but only in parts kits for rear wheel bearing repair kits.
About the only ones I need to source now are the differential tapered bearings. I've settled on Timken made in England or France for now, but I'm still hunting for the German ones.
Broke
 

·
Registered
Joined
·
15,848 Posts
Re: (PASHAT)

Quote, originally posted by PASHAT »
"Bottom L45449 ( 5 might actually be an 8 as it was very hard to read). Race is a nightmare to remove, so I left it.

Quote, originally posted by PASHAT »
Their are two bearing races (cups) that normally go with the bearing cone for the output shaft. The bearing cup that is needed is a L48410. I could be wrong about the 8...it could be a 5 or a 2, but it is the last two digits that are important.

I was mistaken about none of the bearings matching up, the 020 uses a L45449 and a L45410, which is the bearing that I use from Febi. It is the same bearing used on the front wheel bearings for air cooled Beetles, and it is the rear bearing on just about all the water cooled 4-cyl cars I think. It is the smaller tapered bearing for the output shaft in the 020 at the base.
Broke
 

·
Registered
Joined
·
2,567 Posts
Discussion Starter · #8 ·
Re: Bearing Sources

Thanks for the response. All of the original bearings that I removed had England or France on them. (FA G might have been from somewhere else). None were marked from Germany that I recall. I found it amusing that the German vehicle had bearings that were from England and France.
The Timkin differential bearings were available as a special order from my bearing supplier, as was the imput shaft bottom bearing. The output shaft bottom bearing was common and they had one in stock(L45449 bearing and L45410 race). They did have to know what race went with it though.
Your website, http://www.brokevw.com, was inspirational. Best information available. Thanks for your efforts in putting it together. I am hoping that the specs are the same for the 02A as, at this point, it is the best information that I have. The Bentley manual, in book form, does not have ANY information on the specs. It might on the CD, but I am not even sure that the info is available as a CD for the 1991 Passat.
 

·
Registered
Joined
·
15,848 Posts
Re: Bearing Sources (PASHAT)

Quote, originally posted by PASHAT »
I am hoping that the specs are the same for the 02A as, at this point, it is the best information that I have.

Give me a little time and I will try to post up the procedures for setting the preloads on the 02A shafts.
Broke
 

·
Registered
Joined
·
15,848 Posts
Re: Bearing Sources (Broke)

Input shaft -
-Install bearing into trans housing without shim
-Install bearing into clutch housing without shim
-Install input shaft into clutch housing, then install trans housing, tighten bolts to 18 ft-lb + 1/4 turn
-Install measuring fixture, rotate shaft to settle bearings, zero dial with 1mm preload
-Measure shaft play recorded on dial
From there you take the recorded play and look at a table of results and corresponding shim sizes. The llist is fairly long, so if you need to know a shim size for a certain amount of play, let me know, and I can find out for you. Chances are though, I'd guess, that the shims in the box now will bring you back to spec when just replacing the bearings. It is when you swap case parts or shafts that the preload really needs checked closely.
When it is all installed again with the proper shim (or the shims you removed form the case in the order you found them), the play is checked again, and you want a minimum play of 0.01mm (0.0004") and a maximum of 0.09mm (0.0035").
If the bearing play cannot be measured, but there is perceptible input shaft play and the input shaft turns freely, the adjustment is acceptable.
-Turning torque should be a max of 1.8 inch-pounds
Output shaft -
The procedure looks to be the same as for the 020, so that is covered on my site. The only changes look to be the bearing clamping plate bolt torque, for the 02A it is 18 ft-lbs + 1/4 turn; and the final turning torque of the shaft with new bearings....your 02A should be 12-16 inch-pounds of turning torque..
Install the small bearing and 0.65mm shim, don't rotate shaft to settle bearings, measure play, add play, 0.65mm shim, and a preload constant of 0.20mm to get final shim size. They look to use the same 020 shims and part numbers, so those can be found on my site too.
Diff Carrier -
-Install both bearings without shims
-Install diff in clutch housing
-Install trans housing, and 5 bolts, tighten to 18 ft-lbs
-Install dial, don't rotate shaft to settle bearings, measure play
-Add measured play with constant preload value of 0.40mm to get correct shim size
-Install shim under bearing in trans housing
-Lube bearings with trans fluid, measure turning torque, spec values on new bearings should be between 11-29 inch-pounds
If I ever built and sold any 020 trans, I'd have the money to buy up some destroyed 02A units and get another web site built for those, but I'm too lazy.

Broke
 

·
Registered
Joined
·
2,567 Posts
Discussion Starter · #11 ·
Re: Bearing Sources (Broke)

Broke is King, once again. I really appreciate that you take the time to assist me and others.
I have all of the old shims. I would be very scared to have to press that output shaft bearing in without the shim to measure play, and have to remove it. My cheap internal bearing puller worked once...I am afraid that it might not again. What I am hoping will work is to put the shim in and then measure to ensure that it is within specs. I know that if it isn't I will have to start again from the beginning and it will mean pulling that bearing race twice more, but the consensus seems to be that it will likely be within specs with the original parts being replaced.
 

·
Registered
Joined
·
48 Posts
Re: Need bearing numbers for 02A Tranny (PASHAT)

Broke do have a pic of the turning torque measurer tool. I seen the one on your web site but do you have one not in the diff.?


Modified by stoned_elvis at 3:33 AM 11-1-2006
 

·
Registered
Joined
·
15,848 Posts
Re: Need bearing numbers for 02A Tranny (stoned_elvis)

Quote, originally posted by stoned_elvis »
Broke do have a pic of the turning torque measurer tool. I seen the one on your web site but do you have one not in the diff.?

No, I don't think I have a pic of just the torque wrench by itself. It ends in a 1/4" square driver so I can attach sockets or adapters to it, but the only pics I have of it are on the rebuild page, showing it being used.
Broke
 

·
Registered
Joined
·
48 Posts
Re: Need bearing numbers for 02A Tranny (Broke)

sorry i explained it wrong. I have a torque wrench. Is there a vw tool that locks the diff? so that you can mesure the torque. and this is what goes onto the end of the torque wrench?
 

·
Registered
Joined
·
15,848 Posts
Re: Need bearing numbers for 02A Tranny (stoned_elvis)

Quote, originally posted by stoned_elvis »
Is there a vw tool that locks the diff? so that you can mesure the torque. and this is what goes onto the end of the torque wrench?

Ah, OK....yes, there is a VW tool that locks the diff and at the same time provides a place to attach the torque wrench.
The tool is just a tube that slides over an axle stub shaft, and then has a M10x1.50 bolt that threads into the stub axle. You tighten that up, and it'll bind the diff up so that it is locked. When you spin the VW tool, it spins the entire diff housing inside both bearings so you can accurately measure the bearing preload.
If you didn't lock the diff up somehow, when you turned the one axle shaft, it would want to spin the opposite axle shaft the other way.
The end of the tool that locks the diff up is a 15mm or 17mm hex, so you just use a socket to fit it, and spin it around to get a turning torque value.
Broke
 

·
Registered
Joined
·
2,567 Posts
Discussion Starter · #16 ·
Re: Need bearing numbers for 02A Tranny (Broke)

Would it be possible to put one drive flange back in and lock it in place? Would that accomplish the same thing for measuring the preload on the diffential? I have just received a call that my parts are in, so I am going to start the rebuilding process. I plan to put together a set of pictures as there seems to be less information on the 02A available, then there is of the 020. I will post them for comments so people can watch over my shoulder as I do the rebuild.
Let me know any thought on using the drive flange instead of the tool.
 
1 - 16 of 16 Posts
Top