SOHC.co.uk Forums > CB750

Engine full of fuel and seized up

<< < (39/50) > >>

allankelly1:
Hi

Looks like a glacier bush to me

I have changed these on my RD350LC kick starter idler and the clutch centre bush so could be well worth while if it’s shot pressing it out and getting a size and asking a local bearing supplier if they could supply a new one






As then the bush and gear would be as good as new


Sent from my iPhone using Tapatalk

PJM47:

--- Quote from: allankelly1 on October 19, 2020, 08:43:30 PM ---Hi

Looks like a glacier bush to me

I have changed these on my RD350LC kick starter idler and the clutch centre bush so could be well worth while if it’s shot pressing it out and getting a size and asking a local bearing supplier if they could supply a new one

As then the bush and gear would be as good as new


Sent from my iPhone using Tapatalk

--- End quote ---

Interesting thanks. I will look into it.

Trigger:
That bush looks ok. But, always worth measuring it up

royhall:

--- Quote from: PJM47 on October 19, 2020, 05:30:45 PM ---Note it was definitely the starter gear that was the problem, then crank was in and out several times and fully oiled and nothing else connected, it was just resting on the bottom shells but it still would not turn freely. On one of the occasions of taking the crank out the starter gear came loose a bit and then everything was instantly fine after that. Still seems very odd to me.

--- End quote ---
Looks like you found the smoking gun then. The wheel should not have been stuck to the crank it should be free to rotate. Amazing what lack of oil does to an engine. It is free to slightly move on the boss and is fed by pressurised oil to the bush and to behind the wheel through a feed hole. Make sure everything is straight before reassembly as those starters on a good battery put out a lot of torque.

PJM47:
Yes hopefully that’s it. Evetthing else seems nice and straight and in good condition. Just waiting for all the bits to arrive. New cam and primary chains and tensioners. New seals everywhere new piston rings. And I’ll do the valve guide seals and lap. Should be a nice little overhaul for it anyway.

Do we think I need to give the cylinders a light hone to put cross hatching back to settle in the new rings or is best to leave as is?

Navigation

[0] Message Index

[#] Next page

[*] Previous page