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) |
Mike Bellis |
Apr 25 2015, 09:41 PM
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#2
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Resident Electrician Group: Members Posts: 8,345 Joined: 22-June 09 From: Midlothian TX Member No.: 10,496 Region Association: None |
Get a steel fish tape. These are made for pulling electrical wires through conduit.
Cut a 8' section off the reel. Place one end in a drill motor. Get a friend to help. put on gloves and take the loose end and push it into the tube. Have the friend start the drill motor while pushing forward. You will corral the fish tape with your hands to keep it from flopping all over the place. The spinning fish tape will loosen debris from the tube. If it binds, back it out and slowly move forward again. Once you get the fish all the way to the throttle pedal, pull it out and blow the tube with compressed air. If the fish tape will not go through, you may have more than debris and may have to cut and weld. Many times, the hard plastic sheath will break off chunks in the tube and prevent new cable installation. Tip: When cutting the fish tape, bend over the end of the remaining tape or it will unwind like a clock spring inside the carrier. $7.99 at Harbor Freight http://www.harborfreight.com/50-ft-fish-tape-38156.html |
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