400/4 restoration - it begins at last

[Rozabikes Tim]

Well, stripped the 400 this weekend after about 7 years of ownership when it has sat dormant in the Garage in the main. This is the rough bike a few of you will have seen at Crich the first year we met up.

Mixed findings.

It came apart very easily, including the main stand pivot! PO's have obviously had it apart before which was where the bad was found. The wiring was seriously bad. Cannot believe it ran and everything worked. Bodge aint the word.

The precious 4/1 headers better than expected but think I will still re chrome.

Motor still to come apart.

This is unlikely to be a fully documented thread but I will do my best with piccies and ask loads of questions of you experts out there.


Tim

[Nurse Julie]

That's great news Tim, well done 👍

[Athame57]

I'll be watching with interest!

[Trigger]

About time   

[Laverda Dave]

Good luck Tim. Back on the road for the spring sunshine ☀

[Rozabikes Tim]

Well I couldn't resist a peep in the motor, so had an hour in the garage.

Problem. PO has for some reason used allen bolts on the cam sprocket (also cap nuts on studs). Can't shift the ones on the sprocket. Should I resort to heat? Any tips on locking motor other than spanner on crank?

The good news is bearings, cam and followers look pretty good  at first glance from my amateur eye.

God knows what cam chain tension issues there will be looking at adjuster.....

Having a nightmate loading images. Will try again when better internet....

[Nurse Julie]

Ooooooh, this is just so exciting Tim. Heat them nuts 😀😀😀

[Trigger]

Lock it via the fly wheel and heat the bolts as, most people used retainer 

Are you on about domed nuts on the head studs ? should be.

[Rozabikes Tim]

More images I could not load. Will not accept multiples although file size reduced. One at a time then.. [ Guests cannot view attachments ]

[Rozabikes Tim]

More [ Guests cannot view attachments ]

[Rozabikes Tim]

More of cam [ Guests cannot view attachments ]

[Rozabikes Tim]

And questionable adjuster..... [ Guests cannot view attachments ]

[Rozabikes Tim]

Lock it via the fly wheel and heat the bolts as, most people used retainer 

Are you on about domed nuts on the head studs ? should be.

Didn't recall them as domed and stripped a 400 before too. Age!

Enlighten me Trigger on retainer you refer to. As in clutch retainer?

[taysidedragon]

I think Trigger is referring to Loctite or similar.

[Trigger]

Lock it via the fly wheel and heat the bolts as, most people used retainer 

Are you on about domed nuts on the head studs ? should be.

Didn't recall them as domed and stripped a 400 before too. Age!

Enlighten me Trigger on retainer you refer to. As in clutch retainer?

They have always been domed on the inside and non domed on the outside head studs. If they are open on the studs inside, then oil runs down the thread of the stud and leaks. I know this as it is my job 

Nut lock, thread lock, stud lock, retainer