autoteacher

Just brought this home and started dis-assembly and I'm stuck at the chain guard. I pried back the small "door" at the crank ever so slightly and stopped.

Wondering if it slides out, somehow? Does the arm have to be removed first?

nlerner

You need to removed the pie plate that goes over the crank chain ring (it should pry off), and behind that you'll see a bolt holding the chain case to the chain stay. You should be able to remove that without removing the crankset. The rear also has a piece that is held to the main unit with a couple of screws. Remove that and then you can work the case around the rear stays.

And good luck getting it all together again! I don't think I've ever managed to succeed in not having some degree of chain rub.

autoteacher

Thanks

Hudson308 

Heh.
Sounds just like how you pull the timing cover off a mid-80's GM "J" car.

autoteacher

Or a 1984 M/Benz 380sl that you told the customer to NOT attempt the job! Then when it was towed in with a parts basket in the trunk, you buy the car for super cheap and restore it for your wife.

Heh,heh!

autoteacher

Note: The crankset does have to be removed to remove the chain guard

nlerner

I've definitely done it without removing the crankset on several old Raleighs though I did have to take the pedal off. I can imagine it might be hard to pull that cotter with the chain guard installed.

autoteacher

Perhaps this is unique to 1954 Triumphs? The head of the bolt can be seen in the cutout just after the letter "H". There is no way to get that bolt out without removing the crankset. Or the case.

nlerner

A long socket through the open space on the crankset is how I did it on various Raleighs.

autoteacher

I see, but how would you get the chain case off once the bolt is removed without removing the crankset?

nlerner

Hmm. You're right. Seems that the crankset would need to come off. Wow, a memory is a terrible thing to rely on!

Hudson308 

Why would they hide such a great chain wheel under a case? Rudge did the same thing. I know it keeps your pant leg from getting gnawed on by the chain, but that's such a gorgeous crankset.