Author Topic: 1951 Royal Enfield G2 350cc  (Read 894 times)

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murraym

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on: October 19, 2024, 12:07:08 pm
I've just purchased this bike.  It hasn't been run in a very long time but is in a very tidy state.  I intend to change all the oils and filter etc. but decided I might first see if it would start. 
The engine oil level was correct as were the gearbox and primary chain case oil levels.  After putting some fuel in it and priming the Carby it started first kick which I was quite surprised about. 
It ran beautifully but after about 30sec I noticed a continual stream of oil running onto the ground from what appears to be behind the primary chain case at the back of where the shaft from the gearbox comes through into the clutch.  It was in neutral with the back wheel on the ground.  The oil looked like that from the chaincase as the engine oil was a bit darker in colour.  Also it had a lot of small bubbles in it like oil that has been well thrashed about by the likes of a chain etc.
Looking at the manual I have found for it I can't see what or if there is any sort of seal in this area. 
Before I remove the primary chaincase cover and start pulling things to bits I wondered if anybody else ever experienced this issue.

Murray


ddavidv

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Reply #1 on: October 20, 2024, 11:43:17 am
I'd first check the level and make sure it hasn't been overfilled.
2023 Scram 411, 2007 five speed 'Deluxe', 1964 750 Interceptor


Adrian II

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Reply #2 on: October 20, 2024, 05:16:15 pm
The parts book is your friend! Item 16 on the drawing?

https://www.hitchcocksmotorcycles.com/partsbook-pages/1450

A.
Grumpy Brit still seeking 500 AVL Bullet perfection! Will let you know if I get anywhere near...


murraym

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Reply #3 on: October 22, 2024, 09:49:21 am
Thank you both for the helpful replies.  That link to the Hitchcock parts listings is fantastic. 
Regarding the incorrect level which I did wonder about.  There is the filler point at the clutch end of the housing and at the moment the oil is just below the bottom of the thread so quite high really.  Halfway along the casing below the nut which retains the side cover there is another bolt close to the bottom.  Is this the drain or the level setting plug and a drain if you lie the bike over a bit?  My Ariel VB has a machine screw in a similar place which serves to set the correct oil level.


Adrian II

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Reply #4 on: October 22, 2024, 03:13:03 pm
If your outer case looks like THIS:



The oil level screw is the round head brass 5/16" screw half-way along the bottom, below the hole for the main fixing nut.

A.

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murraym

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Reply #5 on: October 23, 2024, 08:14:42 am
Yes that’s exactly what the case looks like.  Thank you for your help.  The previous owner hadn’t ridden it and it was in storage for about 15years before that so someone must have filled it up.
That is going to be an easy fix.  I had heard that they could be filled with automatic transmission fluid?   It’s pretty thin.  Any recommendations?


ddavidv

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Reply #6 on: Yesterday at 12:25:14 pm
I use Type F auto trans fluid in my RE's. Type F has additional friction modifiers. The 'thin-ness' doesn't matter as it's only lubricating a chain and the clutches, not bearing surfaces like in an engine.
2023 Scram 411, 2007 five speed 'Deluxe', 1964 750 Interceptor