1970 Interceptor Albion Gear Box

[jfcroni]

I have a 1970 Royal Enfield Interceptor 750 with an Albion 4 speed w/neutral finder lever. All is good, but it pops out of second sometimes. Any wisdom on this?

[iansoady]

I must admit that box isn't one of my favourites but they are robust. I'd be looking at wear on the dogs.

[Mark M]

I have lots of experience with these and some hard won knowledge! This is a selector problem and is covered in the Workshop Manual. Simply put, if you remove the outer cover you will see the selector mechanism in the middle left of the inner cover. There are a pair of holes in the outer plate of the selector which allow you to see the pawls of the selector ratchet. These must be equally spaced away from the inner ratchet plate, the thing with the square hole in the middle and teeth on the outside. The whole selector mechanism is on pillar screws, loosen these to adjust the gap accordingly. You can test ride it without re-fitting the outer cover so take a spanner and play with it. This should fix it, if not come back and I'll take you to the next step. This gearbox will never be wonderful but should be acceptable with careful adjustment! Once sorted it should stay in adjustment by the way...
I also have a 1970 S2 Interceptor as well as a Mk 1 and a 1A.
REgards, Mark

[jfcroni]

Thanks! I'll get to this tomorrow!

[Mark M]

You may also be interested to know there is a Yahoo Group for Interceptor Owners (actually, it's widened to all Enfield and Indian twins) at  https://groups.yahoo.com/neo/groups/RE_Interceptor/info  If you sign up to join (it's a moderated Group) it may take a few days to approve your application so be patient! Most Group members are in the US as that's where the bulk of the bikes went, you might find an owner near you?
REgards, mark

[jfcroni]

Thanks for that... I'll check it out.

[jfcroni]

Thanks! I'll get to this tomorrow!
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Is this the area to be sure is equal?

[jfcroni]

Thanks all, this problem is fixed. I did the selector adjustment and noticed the cover for clutch rod... was on wrong. The beveled side was reversed. So, going to second was also being interfered with by that. Thanks for the help!

[Mark M]

Excellent news! This is one of the slightly more unusual faults I have found over the years. It is not obvious the clutch pushrod cover has a cutaway to clear the movement of the selector lever, they are often replaced in the wrong orientation when replacing the kick start spring. Another problem is omitting the shim that sits under the neutral finder lever, without it the lever is binding against the selector outer case causing poor or no travel of the gear lever = loss of gears!
REgards, Mark

[jfcroni]

Thanks again all. Gears are good now. Also Mark - the shims are there, so I'm good with that.