1978 CB550 K3 "running" restoration

[SPR]

So ..... beginners mistake 

Went to fit the new carb rubbers and had a devil of a job as there didn't seem enough room to get the air box ones on.

Yep ... I just blindly went off the parts download and ordered 16211-323-000 which are lonnger than the ones on so I presume they are the earlier setup

Checked on CMSNL and seems the correct part is 16211-404-000

Damn - expensive lesson learnt

Can't reuturn these as theve been opened etc - so anyone needing a genuine set let me know

Cheers

Simon

[Nurse Julie]

16211-323-000 are for a 500K....someone will buy them off you I'm sure Simon.

[SPR]

16211-323-000 are for a 500K....someone will buy them off you I'm sure Simon.

Bloody ell ....... doubly wrong

[SPR]

Bit more progress

Cleaned all the underside of the mudguard and then applied Hydrate 80 before a few coats of zinc galvanising spray



Also picked up an as new original seat - the one on it is a plastic bottomed replacement

This one was a good price and using my USA forwarding service meant I can get it pretty easily





Also good news on the head gasket leak ... seems that there isn’t one after some spirited essential trips - what I did find was a spurious extra spark plug washer was wedged stopping #1 plug seating properly ... so hopefully this was where the oil was coming from - will monitor

Cheers

Simon

[kevski]

Just read the whole of this thread and i am enjoying it, K3's are the best of the bunch, i had the 500k3 Italian import, never had carb problems, put second disc on it, loved it and would like it back, will keep watching this thread, you are doing a good job.

[SPR]

Just read the whole of this thread and i am enjoying it, K3's are the best of the bunch, i had the 500k3 Italian import, never had carb problems, put second disc on it, loved it and would like it back, will keep watching this thread, you are doing a good job.

Cheers - it is all very basic TBH but I'm learning as I go along

[SPR]

Afternoon

So after seeing the air filter condition of “my totally gone through” purchase I decided to change oil and filter just in case

The state of the oil and filter has me perhaps a little cynical if one or both were changed.

All done now and probably all in the mind but it seems a little quieter

Thanks

Simon

[Bryanj]

Was the steel washer in the filter between spring and rubber seal?

[SPR]

Was the steel washer in the filter between spring and rubber seal?

Yep

[Bryanj]

Unusal but good

[SPR]

Unusal but good

I suspect like the air filter it had sat undisturbed for decades !

[SPR]

So .... started getting ready to do the fork seals and noticed this when I had removed the front wheel ... it would appear the disk has been rubbing on the fork leg at some point

The disk isn't warped - any ideas what to check when I get round to re assembly

Pic isn't great but you can see where it has been catching

Cheers

Simon

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[hairygit]

Condition of wheel bearings, and check the tube nut is mounted the correct way on the wheel spindle.

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[SPR]

Condition of wheel bearings, and check the tube nut is mounted the correct way on the wheel spindle.

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Thanks - I know I'm showing my ignorance - but could you explain "tube nut"

Simon

[hairygit]

On the front wheel spindle there is a long but/tube, if you need to replace the bearings it has to be removed to get the spindle out. It is entirely possible that a previous owner has refitted the tube nut the wrong way, which moves the entire wheel assembly slightly to the left (from sitting on the bike in the normal riding position) allowing a very slight contact between the disc and fork leg.

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