chillin014

iTrader: (67)

I ordered these from RockAuto and I should have confirmed this beforehand but I'm pretty sure both bearings are the wrong size. They are Timken brand part numbers "108A" and "305AG".

anyone know what the correct part numbers are? I greatly appreciate it.

edit- Autozone has 305A listed as the input shaft bearing as well as the 108A (although it is no longer available.) I think maybe the 108A might work as the bearing closest to the splined part of the shaft. Either one or both of these bearings are too small.

ajm8127

iTrader: (8)

I am bumping this because I have the same question. Rock Auto lists the 108A and only the 108A as the input shaft bearing. So it seems as though they are recommending two, one for each side. Timken's Catalog (page 387 of 678) lists the replacement bearing for the RS5F50A inputs shaft as 108A, also indicating that you need two. So whats up here? Anyone (Dave) have experience with this bearing on the input shaft.

The Timken total is half as much as the dealer total for bearings and seals. I haven't contacted gttransmissions.com yet because they didn't pick up their phone yesterday. Nor did South Point Nissan.

It seems that the 305A is for the RS5F3x series tranny, not the RS5F50A/V (input shaft bearings are the same between the LSD and non-LSD as far as I can tell).

Also Timken has rebuild kits. Anyone have experience with these?

ajm8127

iTrader: (8)

OK. I realize that was a very specific question.

Does anyone have a set of input shaft bearings lying around that they could measure with calipers for me? (part numbers 32203-03E00 and 32203-03E13)

Nealoc187

iTrader: (23)

I don't know timken part numbers for the bearings and I'm not in a position to check the many that I've got laying around (they are back home in michigan and I live in illinois now) but the input front bearing and rear bearing are definitely not the same part number, the rear bearing is much larger than the front bearing is.

if you have the OEM bearings or at least the oem bearing part numbers (and of course the brand) you can take them in to a bearing supplier and they will give you equivalent part #s from a bunch of different manufacturers, and generally lower prices as well. I found some of the bearings for as little as 1/5 the cost of buying the bearing from Nissan.

NisMoN00B

iTrader: (2)

Output Shaft

TIMKEN Part # 30306M
Bearing Assembly; 5 Spd,RH; RS5F50A

TIMKEN Part # 32206M
Bearing Assembly; 5 Spd,LH; RS5F50A
* Non-stock item--shipping delayed up to 2 business days

Input Shaft

TIMKEN Part # 305AG
Ball Bearing; 5 Spd; RS5F30A, RS5F31A
Ball Bearing; 5 Spd; RS5F32A;RS5F32V

TIMKEN Part # 108A
Ball Bearing; 5 Spd; RS5F50A;RS5F50V

That's what I found using RockAuto.

Seems like you weren't looking under the right categories.

ajm8127

iTrader: (8)

Your information does not coincide with what nealoc and nissan say.

If you notice above there is only one bearing listed for the input shaft of a rs5f50a, which is the open diff 5 speed in a 4th gen. Every shaft needs a bearing at both ends. Both nealoc and nissan say they are different. Why doesn't Rock Auto list two different part numbers?

Nealoc, thanks for confirming for me that they are different. I don't know how to go about finding the OEM manufacturer though. NSK maybe, SKF? I went to nissan and they wanted 350 for all bearing and seals. I don't think I am going to be paying that.

I would like to cross reference them. It seems the best way to do that is to have the bearing dimensions if you are lacking the manufacturer and part number. I've poured through the PDFs on Timken's site and cannot find what I need.

I spoke with jtzmax and he said his rebuild is still going strong after 75k, so I'll probably call up GT Transmissions, they are out of the office until the fourth though.

chillin014

iTrader: (67)

do yourself a favor and just get the kit. You will pay much more trying to get the right bearings from rock auto, and from my experience they dont even make some of these bearings aftermarket. I ordered some from RA and they were completely the wrong size.

Nealoc187

iTrader: (23)

send me a PM to remind me, I think I still have my list of bearings for this trans in my filing cabinet at home. it has part #s for all bearings on them, though they are not necessarily the OE manufacturer, they are either OE or equivalent bearings from other manufacturers, you could use those part #s to cross reference and find the best price if you go to a bearing supplier.

the only way I know of to know what the actual factory supplied bearings are would be to either buy them or look at your old ones after you take the trans apart. i could give them to you later this winter or whenever i get back in to my old shop, I have a bunch of them laying around in a bin - still have two disassembled maxima transmissions that I need to put together and sell at some point.

dgeesaman

iTrader: (10)

I don't trust the Timken site. It's clear from the Timken site that they don't even have all of the transmission bearings listed, and there are discrepancies between their listings and the actual transmission internals. (e.g. they list the same bearing for both ends of the input shaft).
Per this link, it lists (2) 108A bearings on the input shaft, which is clearly wrong:
http://www.timken.com/en-us/Knowledg...rtCatalog.aspx

Here is an excerpt of my notes:
Input shaft front (small): 63/28 C3. Timken pn 108A, NTN 63/28C3, Nachi 63/28C3 A, SKF 63/28 C3. OD 68mm, ID 28mm, B 18mm.
Input shaft rear (large): Nachi 28B C08S1. No known equivalents, does not appear to be a standard size. 80mmx28mmx21mm.
Mainshaft front (large): Timken 30306M, SKF 30306 J2/Q, Koyo 30306J-9-N. 72x30x20.75mm.
Mainshaft rear (small): Timken 32206M, SKF 32206 J2/Q, *** HR32206J, NTN HR32206J. 62x30x21.25mm.
Diff Carrier (both sides on open diff, pass. side on VLSD): NTN ET-CR-0834ST. No known equivalents*, and according to NTN engineering it's a custom size. 70x42x19mm.
Diff Carrier (dr. side on VLSD): Timken 32013X, SKF HR32013XJ, *** HR32013X, NTN CR-1363ST. 100x65x23mm.

The Timken aftermarket catalog linked above lists a 32009XM for this location, but if you click on the specs the dimensions don't match. Perhaps this catalog was put together by summer interns or something.

I have actually verified only a couple of these equivalents. So for example the Timken numbers I'm not sure I trust at all. The bold face are the brands supplied the rebuild kits I buy. I have never seen a Timken in a rebuild kit or a rebuilt transmission. Also I could send these specs to each bearing manufacturer to see if some of these are active sizes that aren't listed in their catalogs but I don't feel it's worth the effort. This isn't even taking into consideration availability of the various sizes - for industrial applications some Timken PNs are months of lead time.

Like Neal I have a transmission or so laying around so I could answer specific questions about the OEM bearings. But really I feel there is almost no juice to squeeze to improve upon a regular rebuild kit. If there is any improvement to be made it would be on finding a vendor with better pricing or maybe a group buy to get a qty discount.

Dave

ajm8127

iTrader: (8)

That's great information, Dave. Thanks.

-Tony