LT77 gearbox overhaul. Part 1 - stripping the box

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  • Опубликовано: 24 дек 2024

Комментарии • 46

  • @keyboarddancers7751
    @keyboarddancers7751 3 года назад +1

    I enjoy watching this guy work even though I do not do any mechanic work any more. It's so informative.

  • @user-li6co2by9q
    @user-li6co2by9q Год назад +1

    Hi Mike. I’ve just just took apart the lt77 transmission on a 1990 defender and the damage is in 3 different gears. I am in Mexico and I have called different suppliers in the United Kingdom but they currently do not have the spare parts. Could you suggest me please if I can replace the gear box with another one or any solution on how to repair the damaged gear teeth? I thank you very much in advance for your suggestions

    • @BritannicaRestorations
      @BritannicaRestorations  Год назад

      What parts do you need, and what is the gearbox number? I have lots of used parts here britrest@britrest.com

  • @kyleboo858
    @kyleboo858 2 года назад +1

    hi mike ive got a 1st and 2nd crunch how much do you charge to rebuild one thanks

    • @BritannicaRestorations
      @BritannicaRestorations  2 года назад

      Depends on what parts are needed = labour is C$550/750 depends how clean the box it - but it sounds as the synchro hub is defective $$$$!

  • @stevebruce1359
    @stevebruce1359 4 года назад +1

    Hi very, very useful. I'm in the middle of a strip down now, I'm making rough pullers out of threaded rod and scrap. This box looks ok generally but there was a lot of end float particularly on the layshaft. I'm concerned about some corrosion pitting on the layshaft driven gear what's your thoughts on this.

    • @BritannicaRestorations
      @BritannicaRestorations  4 года назад

      Pitting is never good = what is the box serial number? I have some old stock LT77 layshaft - laying about

    • @stevebruce1359
      @stevebruce1359 4 года назад

      @@BritannicaRestorations Hi thanks for getting back to me its 50A0036039G. The end float was caused by the rear mainshaft and layshaft bearing outer races turning in their housing and burrowing outwards. Seen that one before? I'm thinking new bearings, shim and centre pop the bearing recesses and give them a dose of bearing adhesive.

  • @craig_chaznibond452
    @craig_chaznibond452 6 лет назад

    Another great video Mike!. I love your little tips you use, there is only so much a workshop manual can tell you. These videos really help. Thanks.

    • @BritannicaRestorations
      @BritannicaRestorations  6 лет назад

      Thank you for the support!
      Sorry for the late reply - just found out RUclips is not reporting a lot of comments, so I do not see them
      Mike

  • @kansanbrit1
    @kansanbrit1 Год назад

    So the oil pump is driven off the main shaft and pumps all the time the prop shaft is turning?

    • @BritannicaRestorations
      @BritannicaRestorations  Год назад

      The oil pump is driven by the layshaft - so it is always pumping when a gear is selected

    • @kansanbrit1
      @kansanbrit1 Год назад

      @@BritannicaRestorations great video by the way, thanks. I presume the layshaft turns the whole time the engine is running even if the gearbox is in neutral?

    • @BritannicaRestorations
      @BritannicaRestorations  Год назад

      Yes - however if the vehicle is towed and the transfer is not in neutral, then the drive will not turn the layshaft and oil pump even if the main gearbox is in neutral

    • @kansanbrit1
      @kansanbrit1 Год назад

      @@BritannicaRestorations Sorry to be a pain but do you know if the version of the LT77 used in the Triumph TR8 has the same pump setup.

    • @BritannicaRestorations
      @BritannicaRestorations  Год назад

      Yes - I believe it has

  • @EshbanAutoGarage
    @EshbanAutoGarage 3 года назад +1

    These videos!
    The best ever!

  • @overnighter
    @overnighter 3 года назад +1

    Mike, what's your opinion on "gearbox (oil) cooler" assembly (which is NOT installed on my R380 gearbox, by default). It's mostly 30+ °Cs in summer, in here. Cheers 👍

    • @BritannicaRestorations
      @BritannicaRestorations  3 года назад +1

      Well I have never needed one, but you need the thermostatic block that goes on the side of the box

    • @overnighter
      @overnighter 3 года назад +1

      @@BritannicaRestorations thank you Mike

  • @trailerfitter2
    @trailerfitter2 6 лет назад +2

    After watching you it's worth giving you a shout out to our subscribers.

    • @BritannicaRestorations
      @BritannicaRestorations  6 лет назад +1

      Thanks I would appreciate that!
      I get about 50% of my hits from the UK, but ironically, the North American side is pretty lean
      I have a link to your channel on the related videos, but I will try and make it a permanent link.
      Mike

    • @stephenlyttleton9032
      @stephenlyttleton9032 6 лет назад +1

      I live in Texas and spend many hours watching LRTV and find this channel exceptional. Thank you both!

    • @BritannicaRestorations
      @BritannicaRestorations  6 лет назад +1

      Thanks Stephen!
      I think we both agree the workshop manuals are somewhat vague, especially the Haynes manuals - they have the technical details which we need, but actually doing the jobs are lacking in practical details.
      I don't have a Haynes manual on hand, but I believe they do not cover stripping Defender gearboxes any more - maybe because of the tools required.
      And this is the problem with modern Land Rovers - the cost of specialised tools and computer equipment needed, means it is dealer (stealer) only workshops able to repair even the most simple of jobs.
      Mike

    • @nzrestoration9486
      @nzrestoration9486 6 лет назад

      I’m also a Patreon of Chris at toolbox and between the two of you there’s not much you can’t find out, I just wish more subscribers would donate to keep these videos alive. So a big thank you to both of you for your time and professionalism. Awesome. Jeff

  • @garthrichert5256
    @garthrichert5256 6 лет назад +1

    Hello Mike. May I ask please, how do you remove gearboxes from the vehicles ? Do you have a car liift, or a hoist ? I am wondering if, in my business, I could do it on my own as well. Garth Richert.

    • @BritannicaRestorations
      @BritannicaRestorations  6 лет назад +1

      GarthI have tried several methods of getting the box out and all vary.I will do a video in the near future, but for now I will tell you the way I used to do it and the way I do it now.I am fortunate to have a fork lift, so I used to lift up the back and support the vehicle on 3 foot stands on the rear axle, then by removing the floor I could get access to the balance point of the gear box and with an extension on the forklift I attached a chain, swung the box back and dropped it on the floor.Now I have 2 post liftI also have a small transmission jack I bought usedSo as my lift height is limited, I set the whole car on 4 x 3 foot stands (safety first!) and used the transmission jack to lift out the gearboxOne thing to watch which will save you a ton of hassle refitting is take off the High / low shift assembly as it catches the front edge of the seat base when trying to get the tranny back in (and easy to get out too!)
      I am flat out trying to get my bathroom remodelled which has been going on for a week now (hence no videos!)
      If I get chance over the weekend I will do a few video notes as it is simpler to explain than type!
      Mike

    • @BritannicaRestorations
      @BritannicaRestorations  6 лет назад +1

      ruclips.net/video/NSUlENy_y5E/видео.html

  • @WittyScrewdriver
    @WittyScrewdriver 6 лет назад

    Hey mate . I’m stuck with trying to find that collar remover .

    • @BritannicaRestorations
      @BritannicaRestorations  6 лет назад

      I got mine from Dingocroft - not cheap
      www.dingocroft.co.uk/acatalog/Gearbox_Tools.html
      Mike

  • @maddogdew2609
    @maddogdew2609 5 лет назад +1

    Thank you for this excellent video.

  • @mob993
    @mob993 6 лет назад

    Hi. Could you explain how to strip the box without the special land rover tools. I'm sure many others like myself can't justify the expense. Cheers

    • @BritannicaRestorations
      @BritannicaRestorations  6 лет назад +1

      I understand, but this rebuild was a request by someone who had the tools but didn't know how to use them
      You could use pullers to get the collar off, and tube and screw bar to put it back on
      You must never hit the collar or you could damage the bearings on the mainshaft
      If I get chance over winter I will try and strip one using improvised tools, but at the moment I am extremely busy with work
      Mike

    • @mob993
      @mob993 6 лет назад +1

      @@BritannicaRestorations Thanks for that. No need to go through that bother. I just wasn't sure how it could be done.

  • @lozbrits6220
    @lozbrits6220 4 года назад

    Excellent video 👌👌

  • @gerhardnowak3700
    @gerhardnowak3700 5 лет назад

    Hello, first you make very good videos about repair Land Rovers. I have a question. Where do you buy the parts for the LT 77 gearbox?
    Sorry for the bad English I am German.
    Best regards Gerhard

  • @hasnitamatisa6132
    @hasnitamatisa6132 3 года назад

    Just got LT77 50A.......J suffix.

  • @leemellors3843
    @leemellors3843 6 лет назад

    R380 next please!

    • @BritannicaRestorations
      @BritannicaRestorations  6 лет назад

      Lee
      It's coming up soon as I can get into my container!
      Flipping doors are still iced up!
      Mike

  • @onwheels8232
    @onwheels8232 6 лет назад

    😃

  • @craig_chaznibond452
    @craig_chaznibond452 6 лет назад

    Another great video Mike!. I love your little tips you use, there is only so much a workshop manual can tell you. These videos really help. Thanks.