 What is the best way to fix broken clutch tube, I have seen articals about this but can't find them |
|
|
|
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. |
|
|
  |
| ventedrib |
 May 16 2015, 01:08 PM
Post
#1
|
|
Member  Group: Members Posts: 104 Joined: 10-August 08 From: Monroe La. Member No.: 9,406 Region Association: South East States  |
I have a 72 with a broken clutch tube. It appears to be broke in the front it looks fine at the firewall any help would be mutch appreciated.
|
   |
 
|
| pilothyer |
May 16 2015, 01:30 PM
Post
#2
|
|
Member Group: Members Posts: 838 Joined: 21-May 08 From: N. Alabama Member No.: 9,080 Region Association: South East States |
Look at the attached picture........determine where you will need to cut an access hole in the tunnel (cut 3 sides of a "square" and fold up and out of the way. reweld the tube in place.......be very careful, there are fuel lines in there close by. After you have reattached the clutch tube bend the flap back over and reweld.......the clutch tube is the large one that goes furthermost toward the front of the tunnel. I have seen this problem repaired using the "no weld" method by using a screw down clamp over the loose tube, but requires a screw thru the floor....just not right IMO.
 |
|
|
|
| ventedrib |
May 16 2015, 01:41 PM
Post
#3
|
|
Member Group: Members Posts: 104 Joined: 10-August 08 From: Monroe La. Member No.: 9,406 Region Association: South East States |
QUOTE(pilothyer @ May 16 2015, 02:30 PM)  Look at the attached picture........determine where you will need to cut an access hole in the tunnel (cut 3 sides of a "square" and fold up and out of the way. reweld the tube in place.......be very careful, there are fuel lines in there close by. Thanks it looks like mine may have broke on that middle weld, will have to get a light and a mirror to be sure, but that pic really helps thanks. |
|
|
|
| ventedrib |
May 16 2015, 01:42 PM
Post
#4
|
|
Member Group: Members Posts: 104 Joined: 10-August 08 From: Monroe La. Member No.: 9,406 Region Association: South East States |
QUOTE(ventedrib @ May 16 2015, 02:41 PM) QUOTE(pilothyer @ May 16 2015, 02:30 PM) Look at the attached picture........determine where you will need to cut an access hole in the tunnel (cut 3 sides of a "square" and fold up and out of the way. reweld the tube in place.......be very careful, there are fuel lines in there close by. Thanks it looks like mine may have broke on that middle weld, will have to get a light and a mirror to be sure, but that pic really helps thanks. Sorry I should have proof read that post. |
|
|
|
| JeffBowlsby |
May 16 2015, 02:37 PM
Post
#5
|
|
914 Wiring Harnesses Group: Members Posts: 8,473 Joined: 7-January 03 From: San Ramon CA Member No.: 104 Region Association: None 
|
plug welds...
Attached image(s) 
|
|
|
|
| barefoot |
May 17 2015, 04:50 PM
Post
#6
|
|
Senior Member Group: Members Posts: 1,268 Joined: 19-March 13 From: Charleston SC Member No.: 15,673 Region Association: South East States
|
My clutch tube was broken free at the front end.
i used tube clamp bolted thru the side of the tunnel, no welding needed. A little blacksmithing was needed to get the curvature right, think my 3/8 socket extension had the correct diameter.  |
|
|
|
| ventedrib |
May 18 2015, 03:18 PM
Post
#7
|
|
Member Group: Members Posts: 104 Joined: 10-August 08 From: Monroe La. Member No.: 9,406 Region Association: South East States |
QUOTE(barefoot @ May 17 2015, 05:50 PM) My clutch tube was broken free at the front end. i used tube clamp bolted thru the side of the tunnel, no welding needed. A little blacksmithing was needed to get the curvature right, think my 3/8 socket extension had the correct diameter. Thanks I can do that. |
|
|
|
| ventedrib |
May 18 2015, 03:19 PM
Post
#8
|
|
Member Group: Members Posts: 104 Joined: 10-August 08 From: Monroe La. Member No.: 9,406 Region Association: South East States |
QUOTE(Jeff Bowlsby @ May 16 2015, 03:37 PM) plug welds... Thanks going to show this to the welder down the street. |
|
|
|
| McMark |
May 18 2015, 11:23 PM
Post
#9
|
|
914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
If the weld penetrates the tube, you could be hating life. Plug welds work, but you have to be careful.
|
|
|
|
| sean_v8_914 |
May 19 2015, 11:28 AM
Post
#10
|
|
Chingon 601 Group: Members Posts: 4,011 Joined: 1-February 05 From: San Diego Member No.: 3,541 |
i've done at least 20 that i can remember. just rebuilt my computer so i dont have my data transfered yet but when i do, ill do a write up with photos.
the easy way out is more work and complications later so resist that temptation. once the firewall rips, all 3 attachment points require correction. the tube has migrated and also needs to be in the right position prior to any welding i go in thru the belly to fix the center bracket because it hangs from teh roof of the tunnel as seen in pylothyer's photo the non welded clamp will work fine untill your on the 405 at 5pm on a friday in the #3 lane with a cement trunk behind you. ps. please dont braze it |
|
|
|
| McMark |
May 19 2015, 11:30 AM
Post
#11
|
|
914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
QUOTE(sean_v8_914 @ May 19 2015, 10:28 AM) ps. please dont braze it But brazing is the correction solution -- if it's done right. (IMG:style_emoticons/default/shades.gif) |
|
|
|
| 76-914 |
May 19 2015, 02:17 PM
Post
#12
|
|
Repeat Offender & Resident Subaru Antagonist Group: Members Posts: 13,488 Joined: 23-January 09 From: Temecula, CA Member No.: 9,964 Region Association: Southern California
|
QUOTE(McMark @ May 18 2015, 10:23 PM) If the weld penetrates the tube, you could be hating life. Plug welds work, but you have to be careful. Someone here said they slid an equal sized drill bit into the tube before the weld to prevent this. IDK, but remembered reading this. |
|
|
|
| malcolm2 |
May 19 2015, 02:29 PM
Post
#13
|
|
Advanced Member Group: Members Posts: 2,738 Joined: 31-May 11 From: Nashville Member No.: 13,139 Region Association: South East States
|
Copper won't stick to the weld. So a copper tube or round bar will keep the tube from being plugged.
|
|
|
|
| McMark |
May 19 2015, 04:44 PM
Post
#14
|
|
914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
QUOTE(malcolm2 @ May 19 2015, 01:29 PM) Copper won't stick to the weld. So a copper tube or round bar will keep the tube from being plugged. (IMG:style_emoticons/default/thumb3d.gif) |
|
|
|
| KELTY360 |
May 20 2015, 05:15 PM
Post
#15
|
|
914 Neferati Group: Members Posts: 5,029 Joined: 31-December 05 From: Pt. Townsend, WA Member No.: 5,344 Region Association: Pacific Northwest
|
QUOTE(sean_v8_914 @ May 19 2015, 10:28 AM) once the firewall rips, all 3 attachment points require correction. the tube has migrated and also needs to be in the right position prior to any welding i go in thru the belly to fix the center bracket because it hangs from teh roof of the tunnel as seen in pylothyer's photo I'm faced with the same thing, although the firewall has ripped in my case. What are the three attachment points? When you say you go in thru the belly, does that mean you cut the pan from underneath? |
|
|
|
| sean_v8_914 |
May 21 2015, 03:56 AM
Post
#16
|
|
Chingon 601 Group: Members Posts: 4,011 Joined: 1-February 05 From: San Diego Member No.: 3,541 |
yes. i use a thin cut wheel. i cut along the ribs on 3 sides and lightly score the 4th. open flap. it closes up easy and i grin d teh weld smooth and you cant tell its been done
i am sorry i cant post pics yet. had to swap phones also so no time yet to get to my photos |
|
|
|
| sean_v8_914 |
May 21 2015, 04:05 AM
Post
#17
|
|
Chingon 601 Group: Members Posts: 4,011 Joined: 1-February 05 From: San Diego Member No.: 3,541 |
the cut is made on the rib line. the circle plugs and ribs indicate position to make cuts
Attached thumbnail(s)   
|
|
|
|
| sean_v8_914 |
May 21 2015, 04:11 AM
Post
#18
|
|
Chingon 601 Group: Members Posts: 4,011 Joined: 1-February 05 From: San Diego Member No.: 3,541 |
there is a short cut for teh front attachment point if originality is not an issue
i place a still "L" in the lower rib indentation. this can be done thru the shifter hole. not an option if the fire wall is torn tube position must be addressed if you want the cable to adjust in its proper/original range. the pedal feel is different if the tube is placed elsewhere Attached thumbnail(s) 
|
|
|
|
| sean_v8_914 |
May 21 2015, 04:13 AM
Post
#19
|
|
Chingon 601 Group: Members Posts: 4,011 Joined: 1-February 05 From: San Diego Member No.: 3,541 |
found these on an sd stick. done 15 years ago, yikes.
Attached thumbnail(s)   
|
|
|
|
| sean_v8_914 |
May 21 2015, 04:15 AM
Post
#20
|
|
Chingon 601 Group: Members Posts: 4,011 Joined: 1-February 05 From: San Diego Member No.: 3,541 |
clamps, screws and 1/2 jobs here will fail eventually.
|
|
|
|
|
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 23rd April 2024 - 05:04 AM |
Invision Power Board
v9.1.4 © 2024 IPS, Inc.