5th gear seal installation, 1990 FXRS
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Cruiser
Joined: Sep 2011
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From: Truckee
5th gear seal installation, 1990 FXRS
While replacing my stator on my 1990 FXRS, I had the bright idea to replace all associated primary seals to address the leaks I was experiencing. Everything appears to be going back together smoothly, except I'm having problems with the 5th gear seal.
When removing the old seal, it was obviously shot and came out quite easily. In the attached picture, I don't see how the seal get seated.
Does the primary bearing bushing hold the seal in place? If not, I suspect I have another problem. Any recommendations?
When removing the old seal, it was obviously shot and came out quite easily. In the attached picture, I don't see how the seal get seated.
Does the primary bearing bushing hold the seal in place? If not, I suspect I have another problem. Any recommendations?
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Cruiser
Joined: Sep 2011
Posts: 101
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From: Truckee
Thanks miacycles/John. There is no room to press the 'gold ring' into the case. The bearings are at the edge of the case.
Prior to this adventure, the trans was shifting fine, with no noise. Here is the link to my flickr account, where you can see what I'm describing:
http://www.flickr.com/photos/markrey...in/photostream
I was hoping to avoid a trans rebuild. Am mI overlooking something?
Thanks for your post.
Mark
Prior to this adventure, the trans was shifting fine, with no noise. Here is the link to my flickr account, where you can see what I'm describing:
http://www.flickr.com/photos/markrey...in/photostream
I was hoping to avoid a trans rebuild. Am mI overlooking something?
Thanks for your post.
Mark
Elite HDF Member
Joined: Sep 2007
Posts: 4,468
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From: Bluffton, South Carolina
Ok that is the "wedding band" seal, you need to remove the old one with a small screwdriver/pick first. Then wrap the splines with a layer of masking tape so that the seal doesn't get damaged. Next take a piece of PVC pipe that just fits over the shaft and tap it in place. The tape is needed because the splines can some times have sharp edges that cn damage the seal and cause leaks dow the road.
John
John
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Cruiser
Joined: Sep 2011
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From: Truckee
The "wedding band" seal is removed. What you see in my photo is the new seal and what I believe the edge of the needle bearings. (The visible silver edge has "SCE1612" stamped on it. When I do an internet search on this, I receive several links for needle bearings)
With the needle bearings out to the edge of the casing, there is no room to press on the new 5th gear seal (gold wedding band). Before I tear apart the tranny, I'd like to know what could cause the needle bearings to push outward like this. I'd also like to know if there is an easy fix to correct this.
With the needle bearings out to the edge of the casing, there is no room to press on the new 5th gear seal (gold wedding band). Before I tear apart the tranny, I'd like to know what could cause the needle bearings to push outward like this. I'd also like to know if there is an easy fix to correct this.
Elite HDF Member
Joined: Sep 2007
Posts: 4,468
Likes: 12
From: Bluffton, South Carolina
Improper installation or wear can cause your problem. The seal should go right in if you have the correct one. Ilooked at the picture again and can see the bearings, so it looks like you have wear in there on the race.
John
John
Last edited by miacycles; Oct 20, 2012 at 06:19 AM.
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From: Coromandel Peninsula New Zealand
It looks like the needle roller has worked its way up the inside of the 5th gear. I have seen them do this but usually the inner one has shifted (There are two inside the gear and there is a larger diameter area between them so you can see where they sit).
You need to pull it apart because often you'll find broken needles in the bearing too.
The bearings are pressed into the gear and if they shift its a good idea to locktite the new ones in.
It is possible to do it without removing the 5th gear but there are some precautions you need to take and some tools to make up (none of them difficult)...the rest of the tranny needs to come out but that isn't too much of a drama if you have your ***** together.
You need to pull it apart because often you'll find broken needles in the bearing too.
The bearings are pressed into the gear and if they shift its a good idea to locktite the new ones in.
It is possible to do it without removing the 5th gear but there are some precautions you need to take and some tools to make up (none of them difficult)...the rest of the tranny needs to come out but that isn't too much of a drama if you have your ***** together.
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Thread Starter
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Cruiser
Joined: Sep 2011
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From: Truckee
HA! Yes, must get my ***** together.
Needle bearings will need to be replaced. Taking the shafts out seem straightforward, and it seems the 5th gear will need to be pressed out. Is there really any benefit to replacing the needle bearings, while leaving the 5th gear in the case? Also, if I replace the needle bearings, should I automatically replace the 5th gear? Or if the 5th gear looks good, leave it be?
Anybody out there replace their stock tranny assembly with a Baker 5DD? Was it worth the $2K investment, or did you just rebuild with stock components?
Needle bearings will need to be replaced. Taking the shafts out seem straightforward, and it seems the 5th gear will need to be pressed out. Is there really any benefit to replacing the needle bearings, while leaving the 5th gear in the case? Also, if I replace the needle bearings, should I automatically replace the 5th gear? Or if the 5th gear looks good, leave it be?
Anybody out there replace their stock tranny assembly with a Baker 5DD? Was it worth the $2K investment, or did you just rebuild with stock components?