transmission leaking..., dripping from clutch fork and bell housing... |
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transmission leaking..., dripping from clutch fork and bell housing... |
malaga_red75 |
Aug 7 2010, 04:28 PM
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#1
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'74 2.5L N/A Subie Group: Members Posts: 454 Joined: 5-March 06 From: Menlo Park, CA Member No.: 5,674 Region Association: None |
title says it. just got my car back on the road and it now has a transmission leak. dripping from the clutch fork and bell housing... let me know what you think.
-Peter |
Dr Evil |
Aug 7 2010, 04:34 PM
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#2
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Send me your transmission! Group: Members Posts: 23,002 Joined: 21-November 03 From: Loveland, OH 45140 Member No.: 1,372 Region Association: MidAtlantic Region |
There are two sources of leaking in that area, the input shaft seal, and the ball post that the shift for pivots on. You need to pull the transmission to fix either, but you do not need to pull the box apart to fix them. About a 3-4 hour novice job.
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avidfanjpl |
Aug 7 2010, 04:38 PM
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#3
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914 Hemophiliac Group: Members Posts: 720 Joined: 6-April 10 From: Bear, Delaware Member No.: 11,566 Region Association: MidAtlantic Region |
Rear main seal. You do not have to drop the engine to get to it, but you do have to take off the flywheel. It ain't easy.
Doing it sooner than later is best, because you may get by without having soaked the clutch in motor oil. Clutch plates are about 100 bucks. Get the 6 spring Sachs. That is an extra $350-500 if you do have to replace the entire clutch assembly. Damn thing is that the rear main seal is about 10 bucks. Change the cable and all the parts at the same time. I am about to myself. Was the car sitting for a while, did you overfill the engine, or was it a really hot drive? There is no particular reason why they let go, other than the spring in the seal itself loses tension. I have replaced at least 1 on each car I had. 6 914's. 6 seals. Get it from Pelican or AA. Should be orange in color. Kind of doubt it would be a tranny seal if it is coming down the housing and fork. John |
underthetire |
Aug 7 2010, 04:44 PM
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#4
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914 Guru Group: Members Posts: 5,062 Joined: 7-October 08 From: Brentwood Member No.: 9,623 Region Association: Northern California |
Yep, mine leaked from the trans input shaft seal. One of those while i'm here jobs to. Clutch, repack CV's, replace CV gaskets and schnor washers, possibly engine rear main, trans mounts, on and on...
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davep |
Aug 7 2010, 07:16 PM
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#5
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914 Historian Group: Benefactors Posts: 5,154 Joined: 13-October 03 From: Burford, ON, N0E 1A0 Member No.: 1,244 Region Association: Canada |
Since there are two possible sources for the leak (as mentioned above), the first priority is to determine if it is engine oil or transmission oil. If nothing else, they sure smell different.
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Dr Evil |
Aug 7 2010, 07:26 PM
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#6
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Send me your transmission! Group: Members Posts: 23,002 Joined: 21-November 03 From: Loveland, OH 45140 Member No.: 1,372 Region Association: MidAtlantic Region |
Well, my advice was based on it actually being ruled a transmission leak. If the ball stud is leaking it can absolutely leak down the fork. A bad input shaft seal can also leak down the fork as it allows oil to be sling all over the place. You definitely need to pull the tranny off to get to the bottom of this.
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avidfanjpl |
Aug 7 2010, 07:42 PM
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#7
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914 Hemophiliac Group: Members Posts: 720 Joined: 6-April 10 From: Bear, Delaware Member No.: 11,566 Region Association: MidAtlantic Region |
Dr. Evil is right. Only one way to know. Yank that box.
I never had a front tranny leak, but damn, I have had too many rear main seal leaks to want to remember. I remember having the oil get slung out to the bell housing and drip down the fork. I had a sinking feeling reading your posting. Some things one never forgets. J |
malaga_red75 |
Aug 7 2010, 08:20 PM
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#8
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'74 2.5L N/A Subie Group: Members Posts: 454 Joined: 5-March 06 From: Menlo Park, CA Member No.: 5,674 Region Association: None |
lucky for me, i was already planning on pulling the engine/tranny so I will be able to determine what is going on. I should have mentioned this in the beginning, but it is a subaru engine with an entire new clutch assembly. sounds like it might be the input shaft seal or the ball post. ill take pictures when i pull the engine and separate the two. (hopefully tomorrow) then ill post the pics and we can go from their.
-Peter |
Bleyseng |
Aug 8 2010, 04:36 AM
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#9
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Aircooled Baby! Group: Members Posts: 13,035 Joined: 27-December 02 From: Seattle, Washington (for now) Member No.: 24 Region Association: Pacific Northwest |
Does this setup have support for the input shaft? If not it will flop around leaking past the new seal.
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malaga_red75 |
Aug 8 2010, 11:54 AM
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#10
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'74 2.5L N/A Subie Group: Members Posts: 454 Joined: 5-March 06 From: Menlo Park, CA Member No.: 5,674 Region Association: None |
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Bleyseng |
Aug 8 2010, 12:13 PM
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#11
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Aircooled Baby! Group: Members Posts: 13,035 Joined: 27-December 02 From: Seattle, Washington (for now) Member No.: 24 Region Association: Pacific Northwest |
on type 4 cranks inside the end is a needle beading to support the input shaft. On 914s the bearing is on the flywheel with a spacer inside the crank to keep the bearing in place. Running without a supportbearing means the shaft will move as it's then supported by the bearing inside the 901 tranny. Oil will slingpast it as it will move around it as it moves as there is always some play .
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Drums66 |
Aug 8 2010, 02:23 PM
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#12
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914 Rudiments Group: Members Posts: 5,321 Joined: 15-January 03 From: Coronado,Cali Member No.: 151 Region Association: Southwest Region |
Rear main seal. John did you use synthetic before it let go?? (IMG:style_emoticons/default/poke.gif) (IMG:style_emoticons/default/idea.gif) (IMG:style_emoticons/default/bye1.gif) |
malaga_red75 |
Aug 8 2010, 06:33 PM
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#13
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'74 2.5L N/A Subie Group: Members Posts: 454 Joined: 5-March 06 From: Menlo Park, CA Member No.: 5,674 Region Association: None |
well, i spent the first half of the day building a nice dolly for my engine to come out on... i should have done this the first day. anyways. got the engine and tranny out no problem and here are pictures of the clutch assembly side and the tranny side... pretty certain it is a leak from the tranny. now, how do i tell if it is the input shaft seal or the ball stud seal?
bleyseng- to be honest i am not sure if it has the support bearing. I assume it does, as I purchased my flywheel/clutch/pressure plate from KEP. anyone else have insight to this? |
malaga_red75 |
Aug 8 2010, 06:34 PM
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#14
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'74 2.5L N/A Subie Group: Members Posts: 454 Joined: 5-March 06 From: Menlo Park, CA Member No.: 5,674 Region Association: None |
tranny...
Attached thumbnail(s) |
Dr Evil |
Aug 8 2010, 06:45 PM
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#15
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Send me your transmission! Group: Members Posts: 23,002 Joined: 21-November 03 From: Loveland, OH 45140 Member No.: 1,372 Region Association: MidAtlantic Region |
Take out the socket head that holds the fork in and look at the ball stud under it. You will need to do this to get the TOB off and then the TOB sleeve to look under it for the seal leaking. It will be obvious.
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malaga_red75 |
Aug 8 2010, 06:58 PM
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#16
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'74 2.5L N/A Subie Group: Members Posts: 454 Joined: 5-March 06 From: Menlo Park, CA Member No.: 5,674 Region Association: None |
i removed the fork and the TOB. do i need to remove the ball stud? or just look at it.. it all looks pretty crappy. also, to get the TOB sleeve off, do i just remove the plate that is mated to the tranny with the two nuts on either side? i dont have any fluid in the transmission, that is why i am wondering how to really tell where the leak is. should i just fill the tranny back up with fluid? (i took the fluid out becasue i removed the speedo drive gear when dropping the engine/tranny)
thanks dr. evil -Peter |
malaga_red75 |
Aug 8 2010, 07:07 PM
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#17
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'74 2.5L N/A Subie Group: Members Posts: 454 Joined: 5-March 06 From: Menlo Park, CA Member No.: 5,674 Region Association: None |
just pulled the TOB sleeve... you're right, it is obvious
Attached thumbnail(s) |
malaga_red75 |
Aug 8 2010, 07:08 PM
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#18
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'74 2.5L N/A Subie Group: Members Posts: 454 Joined: 5-March 06 From: Menlo Park, CA Member No.: 5,674 Region Association: None |
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Dr Evil |
Aug 8 2010, 08:10 PM
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#19
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Send me your transmission! Group: Members Posts: 23,002 Joined: 21-November 03 From: Loveland, OH 45140 Member No.: 1,372 Region Association: MidAtlantic Region |
Seal puller, and then install a new one. Cheap, and easy. I would check the ball stud tightness. You may be able to remove it with your bare hands. You need a 14mm with a beveled edge to get into the recess.
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underthetire |
Aug 8 2010, 08:57 PM
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#20
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914 Guru Group: Members Posts: 5,062 Joined: 7-October 08 From: Brentwood Member No.: 9,623 Region Association: Northern California |
You must be young and full of piss and vinegar. The rest of us would just be thinking about pulling the trans still. And planning on a week we can recover after wards so as not to disrupt normal working hours (IMG:style_emoticons/default/biggrin.gif)
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