Paul Axworthy Posted January 8, 2015 Report Share Posted January 8, 2015 Hi all, I thought that I'd fixed my jamming gearbox selector problem but alas not. So I am fully rebuilding the gearbox top cover to replace the interlock device. Problem I have is undoing the square headed peg bolts on the selector shafts. Normal spanners don't have the leverage. Can you obtain a square drive that fits an 8mm square headed peg bolt? I'm a bit stumped. Any help appreciated. Paul Quote Link to post Share on other sites
dingle Posted January 8, 2015 Report Share Posted January 8, 2015 The weapon of choice would be a 5/16" 8 point socket. 8mm would be slightly larger, but might work. Berry Quote Link to post Share on other sites
RogerH Posted January 8, 2015 Report Share Posted January 8, 2015 (edited) Hi Paul, how about something like this http://www.ebay.co.uk/itm/NEW-Genuine-Gator-Grip-Universal-Socket-Wrench-W-Drill-Adapter-3-Piece-Set-/371219625110?pt=LH_DefaultDomain_3&hash=item566e69f496 http://www.ebay.co.uk/itm/MAC-Tools-X104-5-16-3-8-Drive-4-Point-Plug-Socket-/171629848237?pt=Motors_Automotive_Tools&hash=item27f5efa6ad Roger Edited January 8, 2015 by RogerH Quote Link to post Share on other sites
stillp Posted January 8, 2015 Report Share Posted January 8, 2015 I tried one of those Gator Grip sockets as in Roger's first link. It didn't work, so my selectors are now held by round-headed bolts! Quote Link to post Share on other sites
Paul Axworthy Posted January 9, 2015 Author Report Share Posted January 9, 2015 Thanks everyone - I think I now have the solution. Cheers Paul Quote Link to post Share on other sites
Graham Harris Posted January 9, 2015 Report Share Posted January 9, 2015 I think i used an 8inch shifter on its end with a screwdriver through the handle, a bit brutal but worth a go. Graham Quote Link to post Share on other sites
Paul Axworthy Posted January 9, 2015 Author Report Share Posted January 9, 2015 Managed to free peg bolts and remove selector rods. Great news, jamming selector rods cause by missing interlock plunger from the 3rd/4th gear rod. It's so nice to find an actual cause. I can't imagine why this was missed but I suppose these things happen. Anyway, I put everything back together with a new interlock plunger and finally nailed the problem that's been stalking me for the past 18 months! Thanks to all for help and guidance. P. Quote Link to post Share on other sites
RogerH Posted January 9, 2015 Report Share Posted January 9, 2015 Excellent news indeed. Roger Quote Link to post Share on other sites
Barry911 Posted January 10, 2015 Report Share Posted January 10, 2015 Hang on, hang on .... Did I miss something Paul? What was the solution? Guess what I've got to do this weekend .... Many thanks in advance : o) Oh yes, whilst in this area: mine isn't drilled for the inhibitor switches: am I drilling bang through the centre of the cast boss, or is that not good enough? I was going to spot face them in the mill as a starting point. Quote Link to post Share on other sites
Chilliman Posted January 10, 2015 Report Share Posted January 10, 2015 Oh yes, whilst in this area: mine isn't drilled for the inhibitor switches: am I drilling bang through the centre of the cast boss, or is that not good enough? I've always gone for the centre of the cast boss with a centre pop and then drilled out/tapped without any probs - always directly over the shoulder of the selector arms. Quote Link to post Share on other sites
Barry911 Posted January 10, 2015 Report Share Posted January 10, 2015 Thanks John, I'll give it a try. Quote Link to post Share on other sites
Paul Axworthy Posted January 10, 2015 Author Report Share Posted January 10, 2015 Hi Barry, in the end I used a 3/8" '8 point' socket to release the peg bolts - it has more corners so will get purchase on a square head. I bought mine from Halfords. I am a bit confused by your post - what type of inhibitor switch are you planning to fit? Paul Quote Link to post Share on other sites
Barry911 Posted January 11, 2015 Report Share Posted January 11, 2015 Thanks Paul, I'll pick one up from Halfords. My 2000 saloon A-type OD box (heading into my TR6 donor car) arrived with a standard (non overdrive) top cover, so no overdrive inhibitor switches. Therefore need to dismantle same, and fit the correct number / position switches before I can move on. I don't know why it didn't have an OD cover, but luckily the one way clutch in the OD is fine, as is the rest of it it. Therefore someone's either been careful, or the box was never actually used like this. Quote Link to post Share on other sites
Paul Axworthy Posted January 11, 2015 Author Report Share Posted January 11, 2015 Hi Barry, I admire your nerve and ambition. That job is beyond my capabilities but best of luck, I am sure that there's plenty of experience in the Register to help. Regards Paul Quote Link to post Share on other sites
signalredshaker Posted January 14, 2015 Report Share Posted January 14, 2015 It must be the season for it as I too am overhauling the top cover on my '4. Square-headed shift rail bolts were impossibly tight, probably due to what seems to be a taper fit into the rail. After trying the 'nearest' socket trick, all three became pretty rounded off so I used a open-ended square headed brake adjusting spanner from the very bottom of the tool box. ( the opposite end was a very small hex head) A perfect fit which saved much swearing. Never ditch old tools.....like this one. http://www.ebay.co.uk/itm/williams-superslim-spanner-blm-810-rd-/131401831644?pt=UK_Hand_Tools_Equipment&hash=item1e9828d4dc James Quote Link to post Share on other sites
Paul Axworthy Posted January 16, 2015 Author Report Share Posted January 16, 2015 James, well done. I decided to use new pegs - I have two spare. You're welcome to have these as I'll never use them. I'll pop them in the post if you email me your address. One thing I found out was that the various springs, ball bearings, spacers etc. vary greatly depending on the age of the gearbox. The TR manual is not a perfect guide. P. Quote Link to post Share on other sites
signalredshaker Posted January 18, 2015 Report Share Posted January 18, 2015 Thanks, but I ordered a new set- they came BZP- unnecessary I guess, but probably even harder to remove next time. TR manuals are generally a good guide but I find they lack a fair bit. Re-assembly of the top cover is a case in point, especially that blasted interlock thingy. Flaky at best. How Triumph ever expected to make any money on these cars escapes me. Mind you, they didn't did they. 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.