Author Topic: reseating piston (Read 961 times)

johnbrunt · **on:** May 02, 2020, 01:07:44 PM

hi good afternoon

can anybody point me in the right direction for a “how to” get piston tube back over piston whilst still connected to crank - i’ve seen how to do this with piston and tube on bench but not when still connected

can anybody recommend what tool i need to best sort this out

thank you

Paul1953 · **Reply #1 on:** May 02, 2020, 01:22:14 PM

I have used a tin can cut to width and cut top to bottom. Placed around piston with a jubilee clip around. A tighten of the jubilee clip causes the "tin can " ring to compres the piston ring\s into groove and barrel then slides down.

johnbrunt · **Reply #2 on:** May 02, 2020, 01:28:33 PM

hi - so presumably after the first ring is inside the bore do you slide the tin can down ?...or will the piston tube move the can down ?....thanks

grissley · **Reply #3 on:** May 02, 2020, 01:50:35 PM

Take the gudgeon pin out the piston, put the piston in the barrel using a ring compressor or tin can suffice with a jubilee clip and then refit the assembly,

snoopy · **Reply #4 on:** May 02, 2020, 04:33:39 PM

piston needs to be a top dead centre then the clip and can will slide down as the barrel pushes on this gives room to take it off when the rings are in.

Manxdavid · **Reply #5 on:** May 02, 2020, 05:23:57 PM

Quote from: grissley on May 02, 2020, 01:50:35 PM

Take the gudgeon pin out the piston, put the piston in the barrel using a ring compressor or tin can suffice with a jubilee clip and then refit the assembly,

Bloody Hell, I never thought I'd find myself agreeing with Grissley...... Nurse!!!

johnbrunt · **Reply #6 on:** May 02, 2020, 06:02:42 PM

piston has now been removed.....:-)

i’ll have a bash tomorrow now at popping it back in if i can find a jubilee clip big enough

Zip Buggy · **Reply #7 on:** May 03, 2020, 04:31:35 AM

Quote from: johnbrunt on May 02, 2020, 06:02:42 PM

piston has now been removed.....:-)

i’ll have a bash tomorrow now at popping it back in if i can find a jubilee clip big enough

You can always join two or more smaller jubilee clips together to make a big enough one

Doon L001 · **Reply #8 on:** May 03, 2020, 08:10:22 AM

Don't forget to oil it well

Paul1953 · **Reply #9 on:** May 03, 2020, 08:24:08 AM

Quote from: johnbrunt on May 02, 2020, 01:28:33 PM

hi - so presumably after the first ring is inside the bore do you slide the tin can down ?...or will the piston tube move the can down ?....thanks

The jubilee does not need to be tight. All will slide. Just take care as you go along. piston rings are fairly brittle. Having said that it is very straightforward once underway.

grissley · **Reply #10 on:** May 03, 2020, 09:46:56 AM

Or you could buy a proper piston ring tool there cheap enough, and if you break a ring trying to bodge it you will wish you had, it will cost you more. 🙄

David, you always agree with me 🤗

Dave DND · **Reply #11 on:** May 03, 2020, 01:31:02 PM

Quote from: Manxdavid on May 02, 2020, 05:23:57 PM

Quote from: grissley on May 02, 2020, 01:50:35 PM
Take the gudgeon pin out the piston, put the piston in the barrel using a ring compressor or tin can suffice with a jubilee clip and then refit the assembly,

Bloody Hell, I never thought I'd find myself agreeing with Grissley...... Nurse!!!

Shows how these time are affecting us all . . . I also agree with Grissley . . . .

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February 27, 2021, 06:21:43 PM

reseating piston