I droped the drive shaft on my 88 TC to change the u-joints and replace the leaking rear trans. seal. After a test drive I found the new seal leaking also. When I went to get another seal, they had a kit which consists of a seal and a bushing? Of course there are no instructions in the "kit". Has any one ever tried one of these? I am not sure where the bushing goes, it appears that the diameter is large enough to slip over the outside of the drive shaft end that slips into the trans. Any ideas?
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88 TC rear trans seal problem
- Thread starter kato
- Start date
2001LS8Sport
Dedicated LVC Member
It's supplying you with a tail shaft bushing. You may have to remove the tail shaft to install it as there may not be enough room to work around the main shaft of the tranny. Once removed, you use the proper driver to remove the old one and install the new one. Once installed, you need to make sure it slips over the slip yoke of your drive shaft without any high spots hitting. This is probably best left to a tranny shop if you aren't familiar with the repair. But here's the deal...does your slip yoke show considerable bushing wear? If so, then you need another slip yoke too. If not, then look at it and see if there is a groove worn in it by the seal. This is probable and common. If so, you still need to buy a new slip yoke (and now another seal). They also make a Speedisleeve that will fix that. If the groove is deep, you fill the groove with JB Weld or epoxy, sand it smooth, and install the Speedisleeve according to instructions. A machine shop can install it for you also and once the groove is filled, it's not expensive to have them do that. And of course, be sure you use some grease on everything before you put it back together so you don't tear the seal or seize the bushing.
I just thought of something...they may be supplying you with the speedisleeve instead of the bushing. If the bushing slips over your slip yoke, it's definitely a bushing. If it's an interference fit, it should be the speedisleeve. If in doubt, ask them just what they are selling you!!
I just thought of something...they may be supplying you with the speedisleeve instead of the bushing. If the bushing slips over your slip yoke, it's definitely a bushing. If it's an interference fit, it should be the speedisleeve. If in doubt, ask them just what they are selling you!!
I think you are right in saying the part is a tail shaft bushing, the ID of the bushing looks like it is the same as the slip yoke OD. I haven't droped the drive shaft again to compare, but in comparing it to the seal size that is how it measures up. I did look at the slip yoke when I installed the u-joints and didn't think it had excessive wear, or a groove. I may have just damaged the new seal while reinstalling the drive shaft. The seal in this kit has a larger outer rubber dust cover? At least that's what I will call it. It is almost, but not quite long enough for this bushing to fit into it. I will look closer at the slip yoke when I take it out to put this seal in. If there is a lot of play I will look into a new slip yoke and bushing installation. If I can get this leak fixed, this TC runs like a top and I am sure it has a lot of miles left in it. Thanks for the reply.