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> Cleaning tunnel tubes...
SKL1
post Apr 25 2015, 08:03 PM
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In troubleshooting a binding throttle cable, after removing the old cable I was trying to fish the new Terry cable thru the tunnel tube and it kept getting caught up about 2 1/2- 3 feet in towards the front. Could fish a stiff wire through fine but the bigger threaded end would not go past that point. Could also get the old cable end back thru but the new one must be slightly bigger diameter and will NOT go. Looking thru the little holes by the shifter and heater lever (which is removed anyway as I'm not using a heater) I can't really see the tubes anyway so can't see from the front if something is partially blocking it.
I remember helping my son clean the SAI ports on his 993 with an old bicycle brake cable and a power drill and wondered if I fish something like that through it may clean something out left from the restoration and painting. Since I'm not using tubes from the heater cables I thought about using one of those but the flared ends don't fit the throttle cable end that well.

Any ideas of what to use on a drill etc to "clean" things out?? I don't want to destroy another cable trying to "force" it through...

This throttle linkage project is going to be the end of me... (IMG:style_emoticons/default/headbang.gif)
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Jeff Hail
post Apr 25 2015, 10:33 PM
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Clean the tube out first. Some cables had liners that disintegrate and pieces get stuck in the tube.

If it still wont pass through -

Sounds like its hanging up at the bend under the floor crossmember.
A trick I learned twenty something years ago.... cut a 1/16 or 1/8 inch off the threads on the pedal end of the cable. Put a nut on it first to chase the threads/ debur after trimming.

The crimped section on the usual suspect aftermarket cables is a little fatter and sometimes longer than the factory cables and hangs up at the tube bend not wanting to make the turn.
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ChrisFoley
post Apr 26 2015, 08:03 AM
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QUOTE(Jeff Hail @ Apr 26 2015, 12:33 AM) *

...
The crimped section on the usual suspect aftermarket cables is a little fatter and sometimes longer than the factory cables and hangs up at the tube bend not wanting to make the turn.

(IMG:style_emoticons/default/agree.gif)

A good tool for tube cleaning is a 1/8" dia steel welding rod hammered flat on one end and shaped like a spade drill.
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Mblizzard
post Apr 26 2015, 09:35 AM
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QUOTE(Racer Chris @ Apr 26 2015, 06:03 AM) *

QUOTE(Jeff Hail @ Apr 26 2015, 12:33 AM) *

...
The crimped section on the usual suspect aftermarket cables is a little fatter and sometimes longer than the factory cables and hangs up at the tube bend not wanting to make the turn.

(IMG:style_emoticons/default/agree.gif)

A good tool for tube cleaning is a 1/8" dia steel welding rod hammered flat on one end and shaped like a spade drill.


(IMG:style_emoticons/default/agree.gif) Exactly what I had to do. Took a long time to get all of the stuff out but it works.
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Posts in this topic
SKL1   Cleaning tunnel tubes...   Apr 25 2015, 08:03 PM
mgp4591   Maybe an old fat guitar string? I'm sure there...   Apr 25 2015, 08:07 PM
SKL1   not 914 content, but thought it was worth seei...   Apr 25 2015, 08:08 PM
McMark   Was there any welding in that area? I just had to...   Apr 25 2015, 08:15 PM
SKL1   I remember seeing an image of the tubes exposed to...   Apr 25 2015, 08:40 PM
altitude411   I remember seeing an image of the tubes exposed t...   Apr 25 2015, 08:59 PM
dangrouche   I guess you need to determine that your tube is ni...   Apr 25 2015, 08:47 PM
76-914   :agree: Push it till it stops then lightly pull ba...   Apr 25 2015, 08:53 PM
r_towle   :agree: Push it till it stops then lightly pull b...   Apr 26 2015, 10:03 PM
Socalandy   pics when my pans were being replaced   Apr 25 2015, 09:08 PM
Mike Bellis   Get a steel fish tape. These are made for pulling ...   Apr 25 2015, 09:41 PM
Jeff Hail   Clean the tube out first. Some cables had liners t...   Apr 25 2015, 10:33 PM
Racer Chris   ... The crimped section on the usual suspect afte...   Apr 26 2015, 08:03 AM
Mblizzard   ... The crimped section on the usual suspect aft...   Apr 26 2015, 09:35 AM
Dave_Darling   I have also heard of people grinding off the corne...   Apr 25 2015, 10:36 PM
Mr.242   Perhaps you can get a small caliber gun cleaning k...   Apr 26 2015, 12:01 AM
914Sixer   I would take a air compressor and see if i could b...   Apr 26 2015, 06:16 AM
Jeffs9146   I had the exact same problem on my 75! I ended...   Apr 26 2015, 10:36 AM
worn   I had the exact same problem on my 75! I ende...   Apr 26 2015, 03:01 PM
HarveyH   What Dave said! I seem to have heard that some...   Apr 26 2015, 03:15 PM
SKL1   Now I remember I saw those images at pelican! ...   Apr 26 2015, 08:18 PM
altitude411   :rotfl: :lol4: :toke:   Apr 26 2015, 10:07 PM
dcecc1968   Thanks for posting. I'll be installing my new...   Apr 27 2015, 07:38 AM
SKL1   Good luck Don- it was the Terry cable I couldn...   Apr 27 2015, 07:59 PM
914werke   Resurrecting this old thread. Went through this .....   Jul 8 2018, 01:46 PM


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