1978 CB550 K3 "running" restoration

[SPR]

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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Could you possibly say which bit I'm looking for on here ... I know I know 

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[SPR]

No 18.

Thank You

[SPR]

No 18.

My #18 is on the other side ?

I presume that could be the issue ... is it easy to swop ?

Stupid question - it wouldn’t have been done when tyres were changed ?

[hairygit]

Looks like the spindle is back to front, the tube nut should be on the disc side of the wheel, that would cause your problem!

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[SPR]

Many many thanks again !!!

Changed over ....

[SPR]

Forks all apart and new seals fitted .... just the slight problem of not being able to source fork oil !!

[Bryanj]

Got any atf? Even ordinary 10w40 will do at a pinch. Majour diff with fork oil is it dont "froth"
As to the rub mark if you mean on that black plastic bit(cant see anything on the alloy, but i am geriatric) it frequently gets the bracket bent or twisted.

[SPR]

Got any atf? Even ordinary 10w40 will do at a pinch. Majour diff with fork oil is it dont "froth"
As to the rub mark if you mean on that black plastic bit(cant see anything on the alloy, but i am geriatric) it frequently gets the bracket bent or twisted.

the only oil I have is 15w40 diesel qx oil as used by a few on here for the engine

It was a wearing of the actual alloy leg - the spindle was the wrong way round and I've a feeling that the tyre change man altered it

[SPR]

Well ... quick trip to the garage and they had some 10w 40 so bike is all back together .... wheel now correct and disk not touching leg

So far no leaks !!!

A good day and as usual with help from you lot I've managed something else

Cheers

Simon

[Nurse Julie]

You're doing very well Simon.

[SPR]

You're doing very well Simon.

We'll reserve that till after I've been out on it

[SPR]

So a small issue after doing the forks ....

The front brake isn't moving freely on the arm that is supposed to swivel when the brake is applied ...... causing the brake to drag ... I can free it again moving the arm back with a screwdriver but it again starts to bind

I did take this all apart and cleaned the spindle bit and applied a small amount of red grease - was this wrong ?

Any ideas welcome

Cheers

Simon

[Bryanj]

No it was right but it might be the piston in the caliper rather than the bracket. Undo the two bolts holding the caliper halves and see if the arm pivots free then.

BIG HINT
BEFORE attempting to undo the bleed nipple warm the alloy with one of the plumbers torches on dispoable canister or some such then use an 8mm deep socket with a tee bar so you get an even turning force. The bleeders snap off easily.
Also if you do need to get piston out pump the piston out with master BEFORE disconecting pipe.

[SPR]

No it was right but it might be the piston in the caliper rather than the bracket. Undo the two bolts holding the caliper halves and see if the arm pivots free then.

BIG HINT
BEFORE attempting to undo the bleed nipple warm the alloy with one of the plumbers torches on dispoable canister or some such then use an 8mm deep socket with a tee bar so you get an even turning force. The bleeders snap off easily.
Also if you do need to get piston out pump the piston out with master BEFORE disconecting pipe.

On it

Many thanks again

[Bryanj]

No problem, if it does turn out to be caliper piston you can pm me and i will give you ideas