Transfer Case Rear Output Bearing and Seal Sizes (1 Viewer)

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Feb 3, 2008
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Would anyone happen to have the Koyo bearing number (size) and the rear seal size for the bearing and seal on the rear output shaft of the T-case for a 1989 BJ70 with 5 spd manual and manually operated T-case shifter. This is the shaft where the drive exits the T-case to the rear to drive the rear drive shaft.

I am located in Costa Rica and although there is a good supply of bearings and seals, it is very difficult or next to impossible to locate the correct part numbers for this vehicle.

Also, is it possible to replace these parts without removing the T-case from the vehicle or is it necessary to drop the T-case to install the bearing?

Thanks in advance for your assistance.

Gerry
 
By the time the output bearings need to be replaced, it's usually time to go through the whole case.

The bearing pre-load is set by shims, and you should remove the rear bearing retainer and examine the rear most race prior to doing any repairs. If the bearing is pitted at all, then it's generally a good idea to re-bearing the whole case with a bearing kit - especially if your vehicle has somewhere around 180,000 to 220,000 kms since it was last done (most T'case bearings sets seem to last about that long).

The rear most bearing can be replaced in vehicle, but it is often easier to dismantle the whole thing to go through it. Repairing the case can be done without removing the transmission.

~John
 
By the time the output bearings need to be replaced, it's usually time to go through the whole case.

The bearing pre-load is set by shims, and you should remove the rear bearing retainer and examine the rear most race prior to doing any repairs. If the bearing is pitted at all, then it's generally a good idea to re-bearing the whole case with a bearing kit - especially if your vehicle has somewhere around 180,000 to 220,000 kms since it was last done (most T'case bearings sets seem to last about that long).

The rear most bearing can be replaced in vehicle, but it is often easier to dismantle the whole thing to go through it. Repairing the case can be done without removing the transmission.

~John
Thanks John for the recommendation. I am willing to rebuild the entire case, but I cannot buy a kit here in Costa Rica. I need to purchase the bearings and seals separately. Do you know what Koyo bearing numbers and seal sizes I will need to do the job?

I appreciate your assistance.

Gerry
 
It is way cheaper to buy a full kit. Even if you don't use all the parts this time, it's good to have the spares.

Try Roodogs in Australia, or I can ship you one from here.

RooDogs 4WD


~John
 
Thanks John for the recommendation. I am willing to rebuild the entire case, but I cannot buy a kit here in Costa Rica. I need to purchase the bearings and seals separately. Do you know what Koyo bearing numbers and seal sizes I will need to do the job?

I appreciate your assistance.

Gerry

You should probably change your profile to read your location as Costa Rica if that's where you are at the moment.

Numerous vendors will have your parts, us included, but getting things to you in Costa Rica might mean that some suppliers can get you things faster than others.


~John
 

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