31. How to Replace a GripShift Cable
Learn how to disassemble and reassemble a twist shifter to replace the inner shift cable.
Today we’ll learn how to replace a Sram GripShift(R) style shifter cable. For this job, you’ll need a replacement shift cable and end cap, a 2.5mm allen key to open the grip shifter, a 5mm allen key or 9mm open end wrench to loosen the derailleur pinch bolt and brake levers, a cable cutter to trim the cable and pinch the cap, some light oil to lube the cable housings and a tiny bit of waterproof grease for inside the shifter.
The first step is to remove the old cable. Shift either your front or rear derailleur to the smallest sprocket and cut the old cable cap off. Then loosen the pinch bolt and slide the inner cable out of the derailleur and cable housings.
Now loosen your brake lever and slide it along the handlebar so we have room to open the grip shifter unit. Turn the shifter to the highest gear if you’re replacing the rear cable, or the lowest gear if you’re replacing the front. You’ll notice a small allen bolt on the outside of the shifter body. Loosen this off but don’t un-thread it completely as they are really easy to lose.
Once the shifter turns freely on the handlebar, jiggle and pull the grip apart until it separates into two parts. Sometimes it helps to very gently pry it open with a flat screwdriver.
Now you’ll have to be extra careful. The first thing watch for is a tiny piece of oddly-shaped metal sitting on the inside of the shifter. It’s really important to keep that spring exactly where it is as the shifter won’t function without it. Slide the old cable out of the shifter and pay careful attention to how it was wrapped around inside the shifter. The cable usually wraps around once and sits in a little groove.
Apply a tiny dab of grease to the grooves where the cable sits inside the shifter. Slide the new cable back into the shifter, loosely wrap it around once, and then slide it through the shifter body. Now pull the cable tight and set it down into the shifter grooves the same way it came out. If it looks right, push the two parts of the shifter back together and try turning the shifter. If the cable is installed correctly it should click and turn normally. Slide your brake lever back into position and tighten it. Now turn the shifter so the cable is tucked up under the brake lever and tighten it as well.
Drop a little bit of light oil into the cable housings before installing the new cable. Thread the inner cable back through the housings and the derailleur pinch bolt. Make sure your shifter is in the smallest sprocket and then pull the cable tight and tighten the bolt. Now run through the gears and adjust your front or rear derailleur as needed.
The last step is to cut the excess cable off about two inches past the pinch bolt. Then slide on the aluminum cap and just partially squish it 2 or 3 times with your cable cutter so that it stays on. This will keep the cable from fraying.
[attachment=4121][attachment=4121]I have a Sillhoutte and the shifter cable housing has a 90 deg. bend at the downtube connection.The opposite side shifter does not have this bend.Is this a possible bend that has been done by an incorrect cable housing routing.It just looks to be to much of a drastic bend.... Read more >>
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Greetings: New guy here again. I will be replacing brake and shift cables on my 43 year old Raleigh Grand Prix. It's been hanging from my rafters for 20+ years, and the cables are old, dry, rusty and ready to snap. Before that happens, I'd like to replace them, but not sure where to start. Will I need any sort of special tools? Also, are there specific cables I'll need to source for this old bike? ANY advice on replacing the cables will be greatly appreciated! TIA!... Read more >>
I inherited 2001 LeMond road bike recently and I want to add inline cable adjusters to the shifting cables (the existing adjusters are rusted and don't work anymore). I was planning on buying a new shifter cable and housing set, but now I'm wondering if I should keep the existing housing and just replace the cable. The housing seems to be in good shape, but is probably 5+ years old. The cable and housing set I'm looking at is Aztec shifter cable and housing. As for raw cable, any advantage to PTFE coating vs. stainless steel?... Read more >>
I own a 2013 Trek 7.2 FX, and the front brake shoe stopped working up to par, so I decided that I needed to upgrade it. I'm getting a Avid Single Digit 7, and well, I need a brake cable. The one I own now it frayed, so I can't really use it, so what would you recommend?... Read more >>
Hi all I have got a Giant bike from mid 80's. Rear derailleur is Harnet. The adjuster barrel is totally seized up, tried it giving a few WD40 baths, nothing working. Now the question is : Is the RD cable barrel adjuster really required as I am having downtube shifters so I can accurately adjust the RD at a position where it runs without any clicks or dongs.....Still confused about it.... Read more >>
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Hello, I am redoing cables for a Schwinn Varsity 1973. I was planing on fragmenting the housing like what was on the bike originally (ie not continuous housing). Would this product below work for me? Sent away for a bike cable cutter. Thanks in advance Jagwire Racer Diy Road Cable Kit Grey, Complete Brake & Derailleur Kit Item # CA409C10... Read more >>
Hello all, I have the same problem with my bike as trilong2009 did three years ago. The threading in which my Brake Cable Barrel Adjuster Screw (for the rear brake) is apparently somewhat damaged or stripped -- even though I could see most of the threading -- because I am unable to turn the cable barrel adjuster tight and that in turn is not allowing me to adjust the cable. This first happened last year when the bike was new and hardly used, and so, I am a little skeptical that it was because of a lot of grime and grit that got caught in the there; but, nevertheless, I did ... Read more >>
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So i went to go get a cable for gear shifting and the bike shop repair person said they are the same standard size and you cut to fit. Well the cable i got is too short for the back derailer. Are there longer gear shifting cables? Did he give me brake cables instead? Or do i have to stretch the cable or figure out how to use the shorter one?... Read more >>