Gearbox oil change in a classic triumph motorcycle. 500, 650 and 750

Transmission oil replacement in a 1968 triumph Tr6. same will apply for many other classic triumphs from 63 and up.
gear oil recommendation, removal and fill. #triumphmotorcycles #triumphbobber #bobbermotorcycles

[@daveco1270]

Thanks for the video. I just got my first Triumph recently, a 1964 TR6. So far I'm loving it...what a fun bike. From what I understand the bolt at 2:02 is what you use to drain the primary case...and it also gives you access to the primary chain adjuster, but taking the bolt out doesn't effect the adjustment. Otherwise you're not getting all of the oil out. The other plug is there so you get the level correct in the primary case. In my manual it's called the oil level plug

[@shedbillycustoms823]

Thanks bud. Im always learning new things.

[@daveco1270]

@@shedbillycustoms823 I just realized I read my manual wrong in regards to the oil level plug. You were right, there's no reason to mess with that bolt that leads to the primary chain adjuster...not during an oil change anyway.

[@rickconstant6106]

A useful video for people new to servicing Triumph unit twins, but I'd like to add a couple of points: the socket needed for the gearbox drain plug is actually 3/8" whitworth, but if you have to use an 18mm, a 6-point socket is a better fit than a 12-point. Fitting new copper washers to both inner and outer plugs (or annealing the originals if reusing them) should be enough to ensure an oil-tight seal. The oil specified by Triumph was actually a straight EP90, capacity 500ml.

[@shedbillycustoms823]

Thanks Rick. Always willing to learn

[@bryanhotston7774]

Just what I was looking for simple and to the point, thank you !

[@randytafoya5812]

were is your video on the chain primary chain case oil change I'm doing all fluid changes on my 1967 tiger 500 i received from my uncle it is in great shape nice bike starts runs sweet little help on to what kind of oil to use Thanks Love the video's

[@gf291162]

Awesome and simple instruction! Thanks!!

[@andrewbull3537]

Very interesting video.
Your explication on the level of gear box oil was spot on .
You've gained another subsciber.

[@shedbillycustoms823]

Thats awesome to hear. Thanks for the support

[@rayc.8555]

A good straight simple and the best guide.

[@shedbillycustoms823]

Thanks Ray

[@docford3635]

Very helpful video. Thank you…all worked just as you said.

[@shedbillycustoms823]

That’s awesome, thank you

[@krimpoo]

Thanks buddy...as you know,far too many vid's cut corners or make terrible assumptions. You keep simple jobs simple and explain in simple terms...and a good personality to go with it :)
You got a new subscriber.

[@shedbillycustoms823]

Thanks Bobby, that’s awesome to hear

[@crackedfingerz]

Thanks a million.

[@santiagoaraujo3202]

you'e a cool guy, thanks

[@ryanmcdaniel4727]

I have seen this one and the oil change video, but I can't find the primary chain video.

[@bakerrv]

You mentioned that you need to have the bike level side to side to drain all the transmission fluid out but looks like you might need to level your bike front to back as well. The primary chain adjustment plug is also the primary case drain plug is it not? Love my Triumphs!

[@shedbillycustoms823]

Your right. I found that blowing the fluid out is working best. Thanks for commenting

[@skiraf]

Make sure the drip tube is not clogged.

[@chappledesign]

Shedbilly, Thanks!. Where did you get those brass fill plugs!?

[@shedbillycustoms823]

Swap meet. Never found another set. I do like them a lot

[@GMihi]

Dear Sir, Very useful video, thanks a lot. I did oil change on my 66 6T based on your instructions. Now gearbox is waiting for me. I have no filling cap next to the KS as on your bike, so can I use the plug on the top of the gearbox - the one that you also have. Many thanks for your support!

[@shedbillycustoms823]

I never have. Let me double check

[@chappledesign]

Hey, I second your comment on kicking this ol bloke who decided at the Monday morning meeting to make the gearbox drain plug so short. I just got mine off. the whitworh spanner wouldn't fit after years of other people "rounding out " the edges. I have a 64 TR6R. The gearbox cover does not have a fill hole. Does anybody here know the secret to getting the gear oil into the box, heh? This seems like the same guy decided this one too. They fired him finally in '69.

[@chappledesign]

Alas, it's the center fill plug on the flat part of the case, Duh. My 66 has a cover plate from a 68+ (with the proverbial inspection plate they named a fill plug) and so it was confusing me a bit.

[@robinjohansson9820]

do you have a video on how to change the primary oil

[@shedbillycustoms823]

Yes I do. Did you see it or I can send it to you

[@calvinriddle2696]

I'm wanting to buy a thrump moter cycle

[@stockton350]

Did he just bust out Duel of Fates? 🔦🔦

[@joshcorbett6242]

Would this be the same oil used in a 1957 tiger 650 gearbox?

[@shedbillycustoms823]

Sorry just getting back. I need to double check for that year

[@shedbillycustoms823]

Boom

[@jamesdoheny4909]

Thanks

[@Sc0ttzi]

Well, unfortunately that’s probably not the right oil either. That is heavy duty HYPOID gear oil. Older non synchro transmissions should not be running GL-5 hypoid helical oil. They should be running GL-4 straight cut/non synchro type oil. It would work, but still in the long run it will shear/polish a lot of surfaces that shouldn’t be.