pulling hair out over indexing '72 T120V with camplate leafspring

Discussion in 'Technical Help' started by rich, Jul 9, 2015.

Page 1 of 3
  1. rich

    rich Member

    Sep 17, 2014
    10
    8
    Mansfield, Nottinghamshire, UK
    #1 rich, Jul 9, 2015
    Hi guys

    Pulled my gearbox the other day to replace broken third gear mainshaft pinion, and also because box jammed in first - but now having problems trying to index box, especially with that bloody leafspring on camplate! Have no idea which gear to put it in to index it, or how to tell from camplate position as to what gear it's in anyway! Leafspring makes it impossible! Any ideas as to why it jammed in bottom gear in the first place? Found the broken tooth in bottom of gear sump, selector forks and shift mechanism all seem ok. Any suggestions please? I think I'm going slightly mad... :)
     
  2. camman

    camman Member

    Jun 7, 2015
    20
    8
    christchurch dorset
    #2 camman, Jul 9, 2015
    I have never had to deal with problem, but I think I have the manual that explains how to do it on my pc at home........only problem is, I am in Spain till Sunday.
    If you haven't managed to find it to download or got the answer here, I will contact you and email it to you.
     
    • Like Like x 1
  3. rich

    rich Member

    Sep 17, 2014
    10
    8
    Mansfield, Nottinghamshire, UK
    #3 rich, Jul 9, 2015
    Hi

    I have the Haynes manual, which is useless!

    Rich
    Hay
     
  4. camman

    camman Member

    Jun 7, 2015
    20
    8
    christchurch dorset
    #4 camman, Jul 10, 2015
  5. rich

    rich Member

    Sep 17, 2014
    10
    8
    Mansfield, Nottinghamshire, UK
    #5 rich, Jul 13, 2015
    Thanks, Camman for the pdf - although mine is a '72! I appreciate your help.

    Cheers, Rich
     
  6. stevethegoolie

    stevethegoolie Elite Member

    Oct 16, 2014
    2,455
    800
    East Riding of Yorkshire
    #6 stevethegoolie, Jul 13, 2015
    Probably very little difference between T120V and T140V gearboxes!

    A reputable Meriden Triumph spares specialist may be able to help, and supply any bits needed! :)
     
  7. camman

    camman Member

    Jun 7, 2015
    20
    8
    christchurch dorset
    #7 camman, Jul 13, 2015
    • Like Like x 1
  8. camman

    camman Member

    Jun 7, 2015
    20
    8
    christchurch dorset
    #8 camman, Jul 13, 2015
    Yes, just downloaded it, and it pretty comprehensive on both four and five speed boxes....good luck
     
  9. rich

    rich Member

    Sep 17, 2014
    10
    8
    Mansfield, Nottinghamshire, UK
    #9 rich, Jul 14, 2015
    Cheers, guys - I really do appreciate your help. The problem I keep running into is that every manual I've yet seen shows the gearbox fitted with the camplate plunger and spring which comes up from underneath - mine has the stupid leaf spring thing mounted to the inside of the gearbox inner cover instead, which interferes with the camplate position as soon as I reinstall it. I'm almost annoyed! Any clues as to how to take this into account?
     
  10. rich

    rich Member

    Sep 17, 2014
    10
    8
    Mansfield, Nottinghamshire, UK
    #10 rich, Jul 15, 2015
    Ah, hang on - just noticed that the leaf spring is shown in some of the pictures in the '72 model pdf manual - could this be what I've been looking for? Will let you know! Cheers, Rich
     
  11. rich

    rich Member

    Sep 17, 2014
    10
    8
    Mansfield, Nottinghamshire, UK
    #11 rich, Jul 15, 2015
    He's been a real gent! I'm just so ignorant when it comes to this sort of thing. It's all part of my mid-life crisis, I think. Came into a few quid so decided to buy an old classic bike ('72 650 bonnie) and an old classic car ('69 mgb gt) and almost immediately regretted it! A love/hate relationship with the pair of them. Still, ultra cheap insurance and tax exempt...
     
  12. rich

    rich Member

    Sep 17, 2014
    10
    8
    Mansfield, Nottinghamshire, UK
    #12 rich, Jul 15, 2015
    ...if it hasn't left me swinging from the rafters...
     
    • Like Like x 1
  13. crispey

    crispey crispey creme de la creme

    Nov 6, 2014
    7,247
    1,000
    Uk
    #13 crispey, Jul 15, 2015
    Can you leave them to me in your will if it does?? ;-) I have a 58 thunderbird on my shed that wants me to do something to it desperately and I keep putting it off! I will be in the same position soon
     
    • Like Like x 1
  14. camman

    camman Member

    Jun 7, 2015
    20
    8
    christchurch dorset
    #14 camman, Jul 15, 2015
    If you weren't so far away I'd pop round and give you a hand to sort it out.......I'm weird and actually enjoy sorting old bikes.:cool:
    Dont give up, as once you have mastered it and can do with your eyes closed, you will develop a special bond with your bike.....and be weird like me:D
    Crispey, if you want send your 58 Thunderbird to a good home.......you're not so far away:p
     
  15. rich

    rich Member

    Sep 17, 2014
    10
    8
    Mansfield, Nottinghamshire, UK
    #15 rich, Jul 16, 2015
    Thanks for all your confidence, guys! Wish I shared it though! Will let you know how I get on with the noisy, shaking, leaking bloody thing... :)
     
  16. crispey

    crispey crispey creme de la creme

    Nov 6, 2014
    7,247
    1,000
    Uk
    #16 crispey, Jul 16, 2015
    Didn't realise you'd met the wife
     
    • Like Like x 4
  17. camman

    camman Member

    Jun 7, 2015
    20
    8
    christchurch dorset
    #17 camman, Jul 16, 2015
    All part of their charm o_O:D
    My T140 is loud...but everybody seems to like the sound of it, and the vibrations can be quite nice at times....and the "weeping" oils the chain:)
    I did actually manage to get the top end oil tight 5.5K miles ago (seven months), but now weeping from front push rod cover again:(
    As I have a lathe, I have a plan in mind to improve the sealing arrangement.....but that is job for the winter...she can continue to mark her territory till then:cool:
     
    • Like Like x 2
  18. rich

    rich Member

    Sep 17, 2014
    10
    8
    Mansfield, Nottinghamshire, UK
    #18 rich, Jul 17, 2015
    Mine leaks from the front pushrod tube too. And the gearbox drain plug. And the oil feed on the head. And the oil filler cap. More leaks than a Welsh field....
     
  19. rich

    rich Member

    Sep 17, 2014
    10
    8
    Mansfield, Nottinghamshire, UK
    #19 rich, Jul 17, 2015
    And the zorst blows from absolutely everywhere. The front brake is criminally poor. The boyer bransden ignition cuts out from time to time for reasons best known to itself. The bike seems very low on power - I was overtaken by an asthmatic ant carrying some heavy shopping the other day...
     
    • Like Like x 1
  20. camman

    camman Member

    Jun 7, 2015
    20
    8
    christchurch dorset
    #20 camman, Jul 17, 2015
    Probably leaks from primary as well, onto sprocket (seal behind clutch)??....they often do:rolleyes:
    Not telling you how to suck eggs....but I presume you are using mineral 20/50, and not synthetic oil, which will find its way out even easier.
    Sorted that gearbox yet?.....same applies there, make sure you use Hypoy 90 gear oil in that, as engine oil will depart quicker when hot
     
    • Like Like x 1
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