Talk Morgan Forums Thread Like Summary - Opinions on Bevel Box “dirt”

Hey fellow 3-wheelers,

Got my last problem with a blown clutch master cylinder all taken care of. The part swap and full replacement and flushing of the brake and clutch lines went smoothly, considering the tight space around the peddle box.

I was getting ready to better insulate the cockpit and a couple of hex head fasteners that were stripped at the heads and had to be removed carefully with a grinder and replaced. I have about 2300 miles on total, purchased it with 628 previous miles. The area under the drive shaft and bevel box was pretty fouled with oil/dirt. Is this “normal”?

I am going to wait to do the insulation after I change the bevel box oil.

Knowledgeable opinions sought here. Thanks!!!

Will Stotts

Sweating out the 2024 heat wave in SoCal desert

Pinion nut is 33mm across the flats and the hex part is very shallow. You'll do less damage to the nut when you remove it if you face off the internal bevel of the socket before applying force to it. Thread is left hand as others have said, and unless you really want to get involved in setting up the pinion shaft preload, carefully scribe the nut and pinion shaft so that after the old seal has been replaced the nut can be tightened to exactly the original position on the shaft, the actual torque required to do this does not matter, it's the position on the shaft that matters. This of course assumes that Quaife/Morgan got it right in the first place!😃🤔

Undo the bolts and once you have cut the straps the prop shaft can be swung out of the way you will then have access to the pinion nut, LH thread, which will allow you to remove the pinion flange the oil seal is then housed within the gold coloured housing.

That description will get you what you need.

https://simplybearings.co.uk/shop/p...bber-Rotary-Shaft-Seal/product_info.html

I would suggest you replace the oil seal soon and refill the bevel box as it probably won't have much oil left in it! It only take about 330ml in total. If you are a Morgan Three Wheeler Club member you can view a full set of instructions about how to replace the input seal, Bulletin March 2020. If you are not a member, contact me and I will send you a copy, if you want one?

Yes that is a leaking oil seal, better to replace it with a Viton seal rather than the original Nitrile. When changing bear in mind the pinion nut is LH thread.