Julian H Posted May 4 Share Posted May 4 Hi My 6 speed has always been sweet as a nut (usual difficult into 2nd when cold but otherwise okay). Today it was horrible, sudden change, difficult/impossible to get into 1st, 2nd and 3rd at times… balking, crashing refusing to go in gear,, 4th and higher okay but not as slick as has been. Now I am worried, less than 2 weeks before a big trip. Any ideas what the problem might be? The only thing I have done that I can imagine might have affected the gear change is a new near side engine mount? Appreciate some wise experiences… Thanks, Julian Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted May 4 Member Share Posted May 4 Once it’s in a gear is it happy and no noisier than it used to be? Cable or hydraulic clutch? Jonathan Link to comment Share on other sites More sharing options...
Julian H Posted May 4 Author Share Posted May 4 Hi “If I get in gear” it is no different to how it used to be. Cable clutch.. Link to comment Share on other sites More sharing options...
7 wonders of the world Posted May 4 Share Posted May 4 I would look at the clutch opertion first if all changes are affected first Link to comment Share on other sites More sharing options...
Leadership Team SLR No.77 Posted May 4 Leadership Team Share Posted May 4 Which engine is it and wet or dry sump? Link to comment Share on other sites More sharing options...
Julian H Posted May 5 Author Share Posted May 5 Wet sump K Link to comment Share on other sites More sharing options...
Leadership Team SLR No.77 Posted May 5 Leadership Team Share Posted May 5 Easy checks first … check the cable at the pedal box end (pedal box cover removed), the alignment isn’t great and they can easily fray, stretch, then let go completely …. Link to comment Share on other sites More sharing options...
SM25T Posted May 5 Share Posted May 5 Does sound like cable adjustment nuts loose or cable fraying ? Link to comment Share on other sites More sharing options...
Gridgway Posted May 5 Share Posted May 5 I think my clutch actuating arm bent or broke many years ago. K-series 6 speed. Link to comment Share on other sites More sharing options...
John Vine Posted May 5 Share Posted May 5 4 hours ago, Gridgway said: I think my clutch actuating arm bent or broke many years ago. K-series 6 speed. Was that on a dry-sump car (with the "modified" arm)? IME the standard Ford arm is bomb-proof. JV Link to comment Share on other sites More sharing options...
John Vine Posted May 5 Share Posted May 5 9 hours ago, SLR No.77 said: Easy checks first … check the cable at the pedal box end (pedal box cover removed), the alignment isn’t great and they can easily fray, stretch, then let go completely …. Agree with that. This is what the Assembly Guide says about cable set-up: JV Link to comment Share on other sites More sharing options...
Julian H Posted May 5 Author Share Posted May 5 Hi i checked my clutch cable, looked a bit worn so replaced it. Still no good, almost impossible to get a gear. Another observation, running the engine trying to get into gear there is a noisy chatter when clutch is depressed. Thx Link to comment Share on other sites More sharing options...
Leadership Team SLR No.77 Posted May 5 Leadership Team Share Posted May 5 Clutch release bearing needs replacing then! Link to comment Share on other sites More sharing options...
Gridgway Posted May 5 Share Posted May 5 Yes that's right John, dry sump. I didn't know there was a different arm. To the problem in hand I suspect clutch release bearing Link to comment Share on other sites More sharing options...
pgm Posted May 5 Share Posted May 5 Hi Julian, if it is a wet sump and the bearing is sounding noisy it would be wise to also thoroughly check the clutch assembly. Also make sure the spigot bearing is ok as well. It would be unlikely that the operating arm as it is the standard robust Ford item. If it had the dry sump bell housing the first suspect would be the Caterham manufactured operating arm as they frequently fracture and bend hence the reason behind the PGM manufactured uprated arm. Best wishes PGM 1 Link to comment Share on other sites More sharing options...
Gridgway Posted May 5 Share Posted May 5 Certainly sounds like an engine out job unfortunately. Link to comment Share on other sites More sharing options...
Julian H Posted May 6 Author Share Posted May 6 CRB sounds fairly conclusive! Thanks. Link to comment Share on other sites More sharing options...
John Vine Posted May 6 Share Posted May 6 9 hours ago, Julian H said: CRB sounds fairly conclusive! Thanks. If it does prove to be the CRB, consider increasing the pre-load (if you haven't done this mod already). JV Link to comment Share on other sites More sharing options...
Julian H Posted May 6 Author Share Posted May 6 Thanks John will look into this! 1 Link to comment Share on other sites More sharing options...
Julian H Posted May 8 Author Share Posted May 8 I have ordered all the parts except for a clutch fork pivot pin. I wonder is it likely to have been broken, should I get one of those in case and where can I get one (very) quickly to have it just in case please? Thanks Link to comment Share on other sites More sharing options...
PROBE2 Posted May 8 Share Posted May 8 If not already mentioned it is possible to change the CRB without full engine removal, it involves sliding the engine forward just enough to change the CRB. If I remember there is a guide here on the site. Although if not conclusive it’s the CRB worth checking clutch and other components via full engine removal. Link to comment Share on other sites More sharing options...
Skipper555 Posted May 8 Share Posted May 8 https://www.caterhamlotus7.club/guides/157_transmission/168_gearbox/change-crb-without-removing-engine/ Link to comment Share on other sites More sharing options...
Julian H Posted May 9 Author Share Posted May 9 Thankyou! That might help us. i see redline have the 5 speed fulcrum pin on their website. Wouldn’t it be the same for my 6 speed (wet sump) ? Thanks Julian Link to comment Share on other sites More sharing options...
Leadership Team SLR No.77 Posted May 9 Leadership Team Share Posted May 9 The fulcrum pin is part of the bellhousing/belltank and unrelated to which gearbox is fitted. Stu. Link to comment Share on other sites More sharing options...
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