phil_harry Posted June 5, 2014 Report Share Posted June 5, 2014 Hello, I have been having a few problems with the tacho cable on my 71' TR6. The original inner cable recently snapped, very close to the instrument end. I replaced the cable and all worked fine for around 30 miles before the new cable also snapped. The instrument itself seems fine with no obvious resistance to turning by hand. I think the likely cause of the breakages are due to a bend in the cable which is too tight, as the cable is forced to bend immediately after it exits the rear of the instrument. I suspect the cable might be routed incorrectly. The original cable was passing in front of the heater unit, but if the cable went towards the bulk head and behind the heater then the bend would be much less severe, but I am not sure if this route is possible. Could anyone tell me the route it should take? My workshop manual doesn't show it. Much appreciated, Phil Quote Link to post Share on other sites
RobinTR6 Posted June 5, 2014 Report Share Posted June 5, 2014 Toward the back about half way past the heater then down to gearbox cover, across tunnel into bulkhead hole. Quote Link to post Share on other sites
phil_harry Posted June 5, 2014 Author Report Share Posted June 5, 2014 Thank you Robin, I will give that route a try. Quote Link to post Share on other sites
RobinTR6 Posted June 5, 2014 Report Share Posted June 5, 2014 It's worked on 4/5 of my cars without issue. Make sure the cable has a straight run toward bulkhead before heading down. I also don't tighten the connections at either end too much , tighten hand tight all the ay then back off the odd turn. Bit of advice given to me by another and has worked well, so give it a try. Quote Link to post Share on other sites
openroad Posted June 6, 2014 Report Share Posted June 6, 2014 Hi Robin< i didnt know that one, its worth giving it a try. Thanks, Conrad. Quote Link to post Share on other sites
Graze Posted June 6, 2014 Report Share Posted June 6, 2014 (edited) I'm pretty sure mine runs straight through the bulkhead and across in front of the battery then around and down to the dizzyWill have to go and have another look Nope I was wrong - thats on the TR4 - sorryGraze Edited June 6, 2014 by Graze Quote Link to post Share on other sites
phil_harry Posted June 6, 2014 Author Report Share Posted June 6, 2014 Thanks for your replies. I have just picked up another cable from the Tr shop on my way home from work. I'll fit it as suggested and report back. Thanks again. Quote Link to post Share on other sites
phil_harry Posted June 7, 2014 Author Report Share Posted June 7, 2014 Fitted as suggested and now all working again. Nice smooth read out on the instrument, much better than before so that is promising. Only nice smooth bends now on the cable so hopefully it will do the trick in long term. Cheers Phil. Quote Link to post Share on other sites
phil_harry Posted June 9, 2014 Author Report Share Posted June 9, 2014 Done 100 miles since new cable fitted and all working great. loving the weather! Quote Link to post Share on other sites
phil_harry Posted June 9, 2014 Author Report Share Posted June 9, 2014 Done 100 miles since new cable fitted and all working great. loving the weather! Quote Link to post Share on other sites
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.