Cleaning tunnel tubes... |
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Cleaning tunnel tubes... |
SKL1 |
Apr 25 2015, 08:03 PM
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#1
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Senior Member Group: Members Posts: 1,602 Joined: 19-February 11 From: north Scottsdale Member No.: 12,732 Region Association: Upper MidWest |
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) |
Jeffs9146 |
Apr 26 2015, 10:36 AM
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#2
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Ski Bum Group: Members Posts: 4,062 Joined: 10-January 03 From: Discovery Bay, Ca Member No.: 128 |
I had the exact same problem on my 75! I ended up measuring the point the cable stopped and found that at the exact point inside the tunnel was a weld that had blown through the inside of the tunnel. I ground off the top of the tube next to the weld and used a screw driver to bend the bad metal out of the way. I left the tube open and I can now see the wire moving freely through the tube.
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worn |
Apr 26 2015, 03:01 PM
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#3
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can't remember Group: Members Posts: 3,156 Joined: 3-June 11 From: Madison, WI Member No.: 13,152 Region Association: Upper MidWest |
I had the exact same problem on my 75! I ended up measuring the point the cable stopped and found that at the exact point inside the tunnel was a weld that had blown through the inside of the tunnel. I ground off the top of the tube next to the weld and used a screw driver to bend the bad metal out of the way. I left the tube open and I can now see the wire moving freely through the tube. I cut through a tube accidentally and swaged a copper sort of bullet onto steel cable as a backer for weld repair. The idea is that if you do weld, you need a copper backing. Or low penetration of the weld. The spade bit also works and if properly attached can work on a flex cable. But Dave is right. You need to know how the sucker is coming back out. No matter what. Good luck! |
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