Talk Morgan Forums Morgan Sports Cars Morgan Three Wheeler & Super 3 Bevel Box Oil Mystery

We'll, glad to know all is well with filling to the "orange cap"....

This was a very cost effective oil change! I was on the cusp of paying for a new Centa compensator to address the drivetrain rattle, on he advice of my dealer and the factory...it looks (and sounds!) like that won't be necessary for now!

Thanks again to Q8, whose images and instructions were invaluable!

Another example of the utility of TM...perhaps I should send Simon the $800 I was about to spend on the Centa!

I'm now confused about refilling the BB. I feel sure my dealer did the job from underneath & you cannot reach the orange cap from there. Elsewhere around 400 ml is quoted as the oil quanity & that does not seem enough to fill to orange cap. I filled mine to the port just above the drain. It seems unlikly an unused port would be fitted to a custom part. We need answers from MMC

Tim

It would be nice if they would come on here and explain, but that isn't likely to happen, if someone could email them directly and publish the answer, it would be very useful.

OK, having taken the advice I gave above, I have sent this email to Mark Evans, which I hope he will answer here:

Hi Mark,

There has been some discussion on Talk Morgan recently about the correct filling procedure for the Bevel Box. There is an orange breather [I assume] on the side, that will unscrew and a fill level plug above the drain at the rear.

I think it would be very handy if you would post the correct procedure, for those of us who do our own maintenance, as well as the oil you are currently recommending, and why.

Whilst you are posting, I'm sure it would be appreciated if you could also give an explanation for the problems you and we, have all been experiencing and what you have managed to do about them.

Many thanks,

Paul Jacobs

OK...

Per my dealer, the bevel box should be filled via the hole directly above the drain plug, NOT via the orange cap (which is mysteriously labeled OIL )

Lets see what Mark Evans has to say...

In addition, for a complete flush, he recommended draining the goo, then filling with diesel and turning the rear wheel multiple times with the rear on jacks. Then drain the diesel, and fill with automatic transmission fluid, and turn the rear wheel multiple times again. Finally drain again and fill with Red Line 80w140 Gear Oil...

Crowbar

I drained mine, refilled with diesel via port above drain hole & let the engine turn the wheel on tickover for a short time. Repeated with diesel. Drained & repeated with Morris Lodexol 80w140. Drained & refilled with Lodexol. All achieved from under the car. I've run it for 300 miles & repeated twice with Lodexol. It seems a bit quieter but I may be kidding myself.

Tim

Perhaps the 'issue' here is that the orange plug really is the upper fill mark and not just a vent, as we previously thought. If evidence suggests that those filling to this point in the BB's have reduced rattle and noise, then this might be the way forward, despite 'guidance' to the contrary. Judging by the stories of failures thus far, it can't do any harm, can it?!

R1NGA... Filling to the orange cap has cured my rattle completely, though I wonder whether overfilling in this manner could present a problem, my dealer doesn't seem to think it's a problem though...

Atalanta, your pics give new meaning to the term "oil pan"