Pulling a sleeve
 

Tearing apart a TRX 2.5r and having a rough time with getting the sleeve out. Anyone with a method that will ease my pain? I soaked it in nitro over night. It has been sitting for 3 years and has castor gummed up all over in it. I got most all the castor free'd up and removed and now trying to replace the front bearing and conn rod but the cylinder sleeve is being a booger. Any help would be welcomed.

Thanks,
Kevin

RE: Pulling a sleeve
 

Have you tried heating it? Leave it in the oven on about 250° for an hour and see if that loosens things up.

RE: Pulling a sleeve
 

here is what I do:
I clamp the engine (head removed) in a vice by one of the mounting flanges. A prop is fitted. and a little oil is applied to the crankcase.
Mark the cylinder flange position, or drill into the case through the notch in the cylinder flange. (that will be guidance for fitting the liner back)
From the top of the cylinder, I insert a popsicle into the exhaust port, just enough so it will clear the housing casting.
I then apply a light pressure on the prop, and using a paint stripper, heat up the crankcase. As the case heats up, it expands more than the cylinder, so at one moment in time, the cylinder will shift up enough to grab it by the top flange.
If the applied oil starts smoking before the cylinder is free, something is seriously wrong (like baked engine), and more fuel soaking is needed. (leave it in raw fuel for a few weeks)

Fitting the liner is in reverse order, though no popsicle is needed this time. Instead, insert the drill in the previously drilled hole, and let the liner notch ride down that drill to go to the exact seating point that it was before you removed it.

RE: Pulling a sleeve
 

I use the same method as above, but I use the end of a large plastic zip tie instead of a wooden stick. It is a tougher material that doesn't crush or splinter as easily, but is still soft enough not to leave and marks on the metal parts....;)