stuck piston pin

[markiedorg9999]

hi my piston pin of my 2012 cbf 125 is stuck solid to the clips out so i could remove the piston and the pin is stuck solid tried all sorts to get it to move any one else had this problem

[Mr Fro]

You mean the gudgeon pin?

You'll probably need to heat the rod up to allow it to release the pin.

[fq-craigus]

Like above, heat will be needed to expand the piston and then drift the pin out

[megawatt]

Buy or hire a gudgeon pin removal tool. Don't lean on the top of the conrod or you will damage the big end bearing.

[oldie59]

Like above, heat will be needed to expand the piston and then drift the pin out

Read that as gentle heat, too much can deform the piston. A cloth/tea towel dipped into hot water then wrapped around the piston and left for a few minuites sometimes works.

[fq-craigus]

Like above, heat will be needed to expand the piston and then drift the pin out

Read that as gentle heat, too much can deform the piston. A cloth/tea towel dipped into hot water then wrapped around the piston and left for a few minuites sometimes works.

 

Well pointed out, i would have thought no one would heat it until cherry red or melting though

[oldie59]

Like above, heat will be needed to expand the piston and then drift the pin out

Read that as gentle heat, too much can deform the piston. A cloth/tea towel dipped into hot water then wrapped around the piston and left for a few minuites sometimes works.

 

Well pointed out, i would have thought no one would heat it until cherry red or melting though

You never know

[megawatt]

You won't deform the piston unless it gets close to melting point. Use a proper tool to push the pin out or you will damage something.