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TR6 TR6 Diffy oil....How to?

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R6MGS

R6MGS

Yoda
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So, thanks to this forum I am aware that my TR6 has no drain plug on the diff....BUT I think it may be low on oil as it makes a howling sound as speed, so my question is; how would one go about topping it up? /ubbthreads/images/graemlins/hammer.gif

Thanks
 
There IS a plug on the top of the diff. At least Triumph was kind enough to do that for you. But ya gotta clean the crud off the top of the diff to be able to find it. I use a piece of 1/4" poly tubing attached to a large plastic disposable syringe to oil it up. Ahem, mine has a drain on the bottom, thanks to TRF.


Bill
 
My best guess... through the breather plug? Or..you could remove the cover and drill a hole in it at the proper location and install a drain plug. I think drain plug kits are available at NAPA?

Harry
 
I have a vaccum/pump that I got at VB or Moss that I use to suck out as much fluid as I can and then use the same tool to fill it back up. Of course I cleaned it up in between. /ubbthreads/images/graemlins/smile.gif
 
Several years ago, I purchased a little pump unit that screws onto the container. Very similar to a pump you would find on a large shampoo bottle. It has saved a lot of aggravation and mess.
I found it at a Tru Valu hardware store.
 
If it howls going up in speed but not down or vise versa, you may have a problem in the diff. If you get an equal howl up and down, it would point to something else in the drive train. Any any case, you need to top it up with lube. Be aware of the lubs that are harmful to brass,( I think it is GL5 but get an absolute answer to the right lube before you fill up) it would be hard to get it out without a drain plug. If you do have to pull the cover, it makes good sense to install a drain.
 
I've had my TR6 at a "quick lube" type place. According to them, they had no tools to reach the diff plug and top it up. I don't think they were b.s.'ing me, as they did replace the fuel filter and topped up the gearbox. I need to figure a way to get this done, also.
 
Thinking that if I get the time this weekend I am going to block it up and do a complete grease job on the rear end...Especially the U-Joints...as I am suspect of those as well....While I am at it I'll top up the diff...I'll look for the fill plug on the right side?
As far as the howling goes, I hope filling the diff will take care of it...otherwise it looks like t's gunna need u-joints anyway..so it could be those?
 
The breather plug is located in the top right rear (while standing behind car looking forward) of the differential housing cover. It consists of a plug and a split pin which goes down the hole on the breather plug to keep debris out and let air in and out. The breather plug hole is small and I guess some are able to drain and fill the differential from this plug area with some special home made and purchased tools (see prior posts). One solution I have used in the past on other differentials without drain plugs is to remove the rear differential cover and install a drain plug available at NAPA. One final note... be careful what you do here because Moss lists these parts as unavailable.
 
Thanks, I think I've got just the homemade tool to fill it....provided I can get the plug out...
 
Well, just goes to show it depends on which teenager you get at these quick lube places. The assistant manager drained the TR6 diff.(pumped the old fluid out) and refilled her in a matter of minutes. All through the one original fill plug. Twenty eight bucks, new diff fluid. Nice. I had run in to so many that said it was impossible to access, I had almost given up hope. Btw, a point about the diff. fluid. I've been advised from a well-known TR parts supplier we all use, that GL5 should be used in the diff. Not GL4, as some say. GL4 only for the gearbox.
 
Thats very interesting since the Bently workshop manual calls for GL4 in both the Trans and differential. I myself will stick with what the workshop manual says.
 
I know, I'm a bit confused myself. The guy that gave this advice is a pretty reliable source, and was adamant that 5 s/b used in the diff. But, I've also heard to use GL4 in the diff. from other sources. Anyway, I got 5 in the diff., but am a little iffy about it.
 
Okay, having just put GL5 in the diff., I wanted to be absolutely sure. So, I called the helpful tech. guy from the vendor place. He did say GL4 in the gearbox, and GL5 or 6 in the diff. His reasoning was that the additives in GL5 and 6 actually are helpful to the hypoy components in the diff. He said it is okay to use GL4 in the diff., but recommends 5 or 6.
 
I think that GL4 difference is that the sulphur additives in GL5 attack brass and bronze and our diffs don't contain either (but the gearboxes do). I think you will be safe as long as the fluid is rated GL4 GL5 not purely GL5.
 
Well I just got some synthetic put in it....not through my own choice /ubbthreads/images/graemlins/frown.gif
 
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