Home  |  Forums  |  914 Info  |  Blogs
 
914World.com - The fastest growing online 914 community!
 
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG. This site is not affiliated with Porsche in any way.
Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners.
 

Welcome Guest ( Log In | Register )

 
 Reply to this topicStart new topic
> Hole in tailhousing....., Did the speedo gear loosen?
okieflyr
post May 23 2006, 08:05 PM
Post #1


9fauxteen
***

Group: Members
Posts: 816
Joined: 9-January 05
From: Phila PA
Member No.: 3,426
Region Association: North East States
Attached ImageSo after moving the car around a bit while putting things back together, I noticed some oil on the ground. While this is not that unusual for a 914, this was tranny oil.
Thats when I discovered the hole this evening. I'd had the tranny worked over by a VERY experienced gentleman(whom I'll be calling in the morning).
It only has a couple of miles on it at the most, but it was enough to do the damage. My suspician is that the speedo gear has gotten loose and started backing out and jammed? I can see that the teeth are gone, and that the shaft has some wobble, as in loose. I'm hoping to be able to pull the housing, clean out the bits, and put on another donor housing? Can anyone confirm this?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Aaron Cox
post May 23 2006, 08:06 PM
Post #2


Professional Lawn Dart
***************

Group: Retired Admin
Posts: 24,541
Joined: 1-February 03
From: OC
Member No.: 219
Region Association: Southern California
who werked on it?

cuz that aint right
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
okieflyr
post May 23 2006, 08:18 PM
Post #3


9fauxteen
***

Group: Members
Posts: 816
Joined: 9-January 05
From: Phila PA
Member No.: 3,426
Region Association: North East States
QUOTE(Aaron Cox @ May 23 2006, 09:06 PM) *

who werked on it?

cuz that aint right


While there is a definite problem here, I'm not at a point of disclosing a name yet, as I've not talked to the gentleman yet to work out the repair scenario.
My concern is to get this fixed this weekend using donor parts, so I can go racing the first of June... Kevin
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
McMark
post May 23 2006, 08:37 PM
Post #4


914 Freak!
***************

Group: Retired Admin
Posts: 20,179
Joined: 13-March 03
From: Grand Rapids, MI
Member No.: 419
Region Association: None
I've seen muffler hangers wear holes in that area, but nothing like that. I find it hard to believe that the speedo drive could cause that damage. Once the brass gear stripped the speedo gear won't do anything but sit there immobile.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Dr Evil
post May 23 2006, 10:25 PM
Post #5


Send me your transmission!
***************

Group: Members
Posts: 22,995
Joined: 21-November 03
From: Loveland, OH 45140
Member No.: 1,372
Region Association: MidAtlantic Region
Wobble in that speedo shaft (the gold one) is normal. I don't think the speedo shaft caused this. strange indeed. Your muffler hanger looks a bit intrusive into that area, no?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
So.Cal.914
post May 23 2006, 10:48 PM
Post #6


"...And it has a front trunk too."
*****

Group: Members
Posts: 6,588
Joined: 15-February 04
From: Low Desert, CA./ Hills of N.J.
Member No.: 1,658
Region Association: None
It almost looks like that hanger should be spaced out a bit.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
okieflyr
post May 24 2006, 06:43 AM
Post #7


9fauxteen
***

Group: Members
Posts: 816
Joined: 9-January 05
From: Phila PA
Member No.: 3,426
Region Association: North East States
QUOTE(So.Cal.914 @ May 24 2006, 12:48 AM) *

It almost looks like that hanger should be spaced out a bit.

I'm checking into that. There is more room than the picture angle reveals, but not much. There is no contact statically, but i'm looking into some vibration/distortion contact scenerio. Kevin
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
jr91472
post May 24 2006, 07:03 AM
Post #8


"I'm pacing myself sergeant..."
***

Group: Members
Posts: 1,205
Joined: 2-August 04
From: McKinney, TX
Member No.: 2,437
Been there done that.....

Oh the horror.....
Expansion bolt was NOT torqued properly. Do not drive it as you run the risk of damaging the ring and pinion.

If your are luckly you will only need to replace the speedo worm drive, expansion bolt, and rear cover.

good luck
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Dr Evil
post May 24 2006, 11:53 AM
Post #9


Send me your transmission!
***************

Group: Members
Posts: 22,995
Joined: 21-November 03
From: Loveland, OH 45140
Member No.: 1,372
Region Association: MidAtlantic Region
I have a spare bolt and drive, PM me.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
jfort
post May 24 2006, 02:43 PM
Post #10


Senior Member
***

Group: Members
Posts: 1,135
Joined: 5-May 03
From: Findlay, OH
Member No.: 652
Region Association: Upper MidWest
same thing happened to me 6 weeks ago. tranny apart and put back together but mechanic did not tighten nut. speedo gear drilled a hole in the end of the case. replaced case end, speedo gear, pinion gear and first gear. running good now.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
okieflyr
post May 24 2006, 03:58 PM
Post #11


9fauxteen
***

Group: Members
Posts: 816
Joined: 9-January 05
From: Phila PA
Member No.: 3,426
Region Association: North East States
QUOTE(Dr Evil @ May 24 2006, 01:53 PM) *

I have a spare bolt and drive, PM me.

Thanks for the offer... I just spoke with my tranny guy, and I'll pull it and travel out to him on Sat to get it checked out thoroughly and hopefully fixed same day.
Kevin
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Cap'n Krusty
post May 24 2006, 05:13 PM
Post #12


Cap'n Krusty
**********

Group: Members
Posts: 10,794
Joined: 24-June 04
From: Santa Maria, CA
Member No.: 2,246
Region Association: Central California
You can't accurately set the shift forks with that bolt loose, makes me wonder what else he forgot. HOWEVER, it's a stretch bolt, so there's always the possibility it just broke. The Cap'n
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
okieflyr
post May 27 2006, 08:55 PM
Post #13


9fauxteen
***

Group: Members
Posts: 816
Joined: 9-January 05
From: Phila PA
Member No.: 3,426
Region Association: North East States
Well we went back into the tranny this morning, and as suspected (and hoped for), it was only the the speedo shaft and gear that came loose. It preceeded to back out and bore it's way through. The tranny was disasembled and checked out, flushed, lubed and re-assembled. Drove it around the hood this evening, and so far so good. Looking foward to the shake down auto-x next weekend (IMG:style_emoticons/default/piratenanner.gif) Kevin


Attached image(s)
Attached Image
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Cap'n Krusty
post May 27 2006, 08:59 PM
Post #14


Cap'n Krusty
**********

Group: Members
Posts: 10,794
Joined: 24-June 04
From: Santa Maria, CA
Member No.: 2,246
Region Association: Central California
"Came loose"? Did the roll pin break? I can't imagine that happening, but I suppose it could. The only other likely scenario is the bolt not being torqued properly. 12mkp isn't a torque likely to "come loose". The Cap'n
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
« Next Oldest · 914World Garage · Next Newest »
 

Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:

 

Display Mode: Standard · Switch to: Linear+ · Switch to: Outline

Track this topic · Email this topic · Print this topic · Subscribe to this forum

- Lo-Fi Version Time is now: 15th May 2024 - 07:44 AM
Invision Power Board v9.1.4 © 2024  IPS, Inc.
All rights reserved 914World.com © since 2002
914World.com is the fastest growing online 914 community!
We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ...