 Fixed tranny oil leak from speedo angle drive., finally... |
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| olav |
 Apr 22 2006, 12:43 PM
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#1
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Senior Member  Group: Retired Members Posts: 1,107 Joined: 28-December 02 From: Los Gatos, CA. USA Member No.: 34 Region Association: None  |
Had transmission oil leaking out of my speedo angle drive. Just a little drip out of the end, then it progressed to leak into my speedometer cable and down it.
Finally figured out the problem. There is a seal, not the o-ring, right where it speedo angle drive screws into the speedo transmission guide, the aluminum cylinder. The seal goes around the speedo transmission gear shaft. When I took the gear and guide out that little seal was trashed. Took it out put in a new one and now no more leak. (IMG:style_emoticons/default/clap56.gif) That was a pesky leak and the tranny oil would go on my muffler and make a mess. Just thought I'd mention this in case anyone else is having an issue like this. Sorry, no pics because I forgot my camera... (IMG:style_emoticons/default/sad.gif) |
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| McMark |
Apr 22 2006, 12:47 PM
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#2
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914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
Good to know. Thanks Olav. (IMG:style_emoticons/default/smiley_notworthy.gif)
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| neo914-6 |
Apr 22 2006, 01:44 PM
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#3
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neo life Group: Members Posts: 5,086 Joined: 16-January 03 From: Willow Glen (San Jose) Member No.: 159 |
Ok then, what's the part number?
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| Spoke |
Apr 22 2006, 09:07 PM
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#4
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Jerry Group: Members Posts: 7,085 Joined: 29-October 04 From: Allentown, PA Member No.: 3,031 Region Association: None 
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Where did you get the seal and o-ring? I have the same issue and was going to start a thread about fixing it.
Spoke Attached image(s) 
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| ThinAir |
Apr 22 2006, 09:19 PM
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#5
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Best friends Group: Members Posts: 2,553 Joined: 4-February 03 From: Flagstaff, AZ Member No.: 231 Region Association: Southwest Region
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QUOTE(Spoke @ Apr 22 2006, 08:07 PM)  Where did you get the seal and o-ring? I have the same issue and was going to start a thread about fixing it. This is exactly why it such a great thing when you find a solution and post it! It's only a matter of time before someone else has the same problem and a search can then provide a quick solution. Congrats on finding the problem and thanks for posting it! Now, we need part numbers! (IMG:style_emoticons/default/biggrin.gif) |
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| srb7f |
Apr 22 2006, 09:28 PM
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#6
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Member Group: Members Posts: 157 Joined: 17-May 04 From: Roswell, GA Member No.: 2,077 Region Association: None |
I ordered mine a couple weeks ago from GPR, they had it in stock and it was only $8. They also had the O-ring. Call them and ask for Dave.
QUOTE(ThinAir914 @ Apr 22 2006, 07:19 PM) QUOTE(Spoke @ Apr 22 2006, 08:07 PM) Where did you get the seal and o-ring? I have the same issue and was going to start a thread about fixing it. This is exactly why it such a great thing when you find a solution and post it! It's only a matter of time before someone else has the same problem and a search can then provide a quick solution. Congrats on finding the problem and thanks for posting it! Now, we need part numbers! (IMG:style_emoticons/default/biggrin.gif) |
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| olav |
Apr 24 2006, 11:21 AM
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#7
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Senior Member Group: Retired Members Posts: 1,107 Joined: 28-December 02 From: Los Gatos, CA. USA Member No.: 34 Region Association: None |
Sorry, I was away. I'll get the part no. I was looking at the PET and all the parts are glommed together. Someone should take pics of the seal and it's replacement for posterity! |
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| ptravnic |
Apr 24 2006, 02:48 PM
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#8
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Senior Member Group: Members Posts: 1,231 Joined: 27-May 03 From: Chicago, IL Member No.: 747 Region Association: None
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This seems like a problem I'm having as well. I'd be very grateful if you could post a pic of the seal & where it is located on the car. Part # would be groovy too...
Thx for the post! |
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| Porsche Rescue |
Apr 24 2006, 03:39 PM
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#9
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Saving and Enjoying Old Porsches Group: Members Posts: 2,978 Joined: 31-December 02 From: Bend, Oregon Member No.: 64 Region Association: None |
Just bought the seals last week from the dealer after learning from PET that there were two.
Seal: 999 113 036 50 $8.22 O ring: 999 701 084 50 $ .91 Got tired of the puddle on the floor. Haven't done the job yet. Olav, am I correct in assuming that I must drain the tranny first? Attached image(s) 
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| olav |
Apr 24 2006, 03:59 PM
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#10
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Senior Member Group: Retired Members Posts: 1,107 Joined: 28-December 02 From: Los Gatos, CA. USA Member No.: 34 Region Association: None |
QUOTE(Porsche Rescue @ Apr 24 2006, 02:39 PM) Just bought the seals last week from the dealer after learning from PET that there were two. Seal: 999 113 036 50 $8.22 O ring: 999 701 084 50 $ .91 Got tired of the puddle on the floor. Haven't done the job yet. Olav, am I correct in assuming that I must drain the tranny first? That's the seal I replaced. My O-ring was still fine. I raised the rear of the car on to jack stands and pulled out the tranny speedo gear without draining the the tranny oil first. I removed the 13 mm bolt, pulled the tranny speedo gear housing then plugged the hole with rags so not to lose too much tranny oil. Then I did the seal replacement And stuck the speedo gear housing back in. I topped up the tranny oil because some did spill. Went for a 70 mile drive today and the angle drive is nice and dry. |
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| SirAndy |
Jun 6 2007, 10:43 PM
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#11
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Resident German Group: Admin Posts: 41,891 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
i just replaced that part, as well as the o-ring ...
here's the part number, for future reference:  the seal goes around the inner shaft ... (IMG:style_emoticons/default/bye1.gif) Andy |
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| tonylamont |
Aug 31 2011, 06:01 PM
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#12
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Newbie Group: Members Posts: 2 Joined: 31-August 11 From: Austin, TX Member No.: 13,503 Region Association: None |
I have a question for others who have done this.
I have the same problem, and have bought the replacements parts noted above. I removed the 13mm bolt, and have taken the speedo drive assembly out. However, I'm having a devil of a time getting the assembly apart to get at the seal. There is a large nut that attaches the angled pipe to the "guide bush" or "trans. shaft sleeve" (the main metal part) that I cannot get to move. Any recommendations? And sorry if this is obvious, but I'm an idiot mechanically. |
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| SirAndy |
Aug 31 2011, 06:15 PM
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#13
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Resident German Group: Admin Posts: 41,891 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
QUOTE(tonylamont @ Aug 31 2011, 05:01 PM) I removed the 13mm bolt, and have taken the speedo drive assembly out. Put it back in. (IMG:style_emoticons/default/biggrin.gif) The angle part will come off much easier if the shaft is still secured in the transmission. See pic below ... (IMG:http://www.914world.com/bbs2/uploads/post-419-1266609711.jpg) (IMG:style_emoticons/default/welcome.png) |
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| SirAndy |
Aug 31 2011, 06:16 PM
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#14
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Resident German Group: Admin Posts: 41,891 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
Also, have a look at this thread:
http://www.914world.com/bbs2/index.php?showtopic=103985 (IMG:style_emoticons/default/bye1.gif) |
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| tonylamont |
Sep 1 2011, 06:59 AM
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#15
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Newbie Group: Members Posts: 2 Joined: 31-August 11 From: Austin, TX Member No.: 13,503 Region Association: None |
SirAndy,
Much thanks. I have replaced the seal and have reinstalled the drive assembly but have one last problem - when I try to put the 13mm bolt back in, there appears to be a thread assembly (it looks like a spring actually) protruding from the hole the 13mm bolt goes into. I can't get the 13mm bolt in. Did I screw (pun intended) something up? |
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| EdwardBlume |
Sep 1 2011, 07:13 AM
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#16
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914 Wizard Group: Members Posts: 12,338 Joined: 2-January 03 From: SLO Member No.: 81 Region Association: Central California
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A spring? threaded? I don't recall this.
Take the drive back off. Clean the casing again. Inspect the hole and thread. Look at the drive where the bolt threads and make sure it is in good condition. Line up the drive (mark it if you need to) and try again. If the threads are damaged, you can try and rethread them with the correct tool. |
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| Richard Casto |
Sep 1 2011, 08:18 AM
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#17
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Blue Sky Motorsports, LLC Group: Members Posts: 1,465 Joined: 2-August 05 From: Durham, NC Member No.: 4,523 Region Association: South East States |
QUOTE(tonylamont @ Sep 1 2011, 08:59 AM) SirAndy, Much thanks. I have replaced the seal and have reinstalled the drive assembly but have one last problem - when I try to put the 13mm bolt back in, there appears to be a thread assembly (it looks like a spring actually) protruding from the hole the 13mm bolt goes into. I can't get the 13mm bolt in. Did I screw (pun intended) something up? You might be seeing a Heli-coil. It could be that a previous owner stripped that thread and then used a Heli-coil kit to repair. Google Heli-coil to see what it is. The threaded "coil" might be fine (and just not what you are expecting to find), or it might be damaged and preventing you from putting the screw in. I have also seen a Heli-coil repaire like this result in some of the coils protruding deep enough into case that it can damage (cut/scrape) the o-ring on the aluminum housing for the speedo drive (the part you just worked on). If the coil is damaged, but the threads in the end housing fine, you may just need to thread in a new Heli-coil. Richard |
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| SirAndy |
Sep 1 2011, 11:28 AM
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#18
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Resident German Group: Admin Posts: 41,891 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
QUOTE(Richard Casto @ Sep 1 2011, 07:18 AM) You might be seeing a Heli-coil. (IMG:style_emoticons/default/agree.gif) |
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| Scott S |
Dec 7 2011, 11:23 AM
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#19
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Small Member Group: Members Posts: 1,698 Joined: 30-April 03 From: Colorado Member No.: 633 |
Sorry to pull up an old thread.....
After seeing this thread back in Sept, I ordered ther seals. Last night I went to install them and cant see where the small internal seal actually goes - even after looking the PET diagram. Do you have to pull apart the gear drive? Can somone list a step by step? Sorry for my ignorance... Thanks - Scott S |
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| rick 918-S |
Dec 7 2011, 12:16 PM
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#20
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Hey nice rack! -Celette Group: Members Posts: 20,785 Joined: 30-December 02 From: Now in Superior WI Member No.: 43 Region Association: Northstar Region 
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