stuck pistons

[rosedale123]

I ma working on getting the stuck pistons out of my B414.... I have been successful on 2 of the 4. I have been soaking the other 2 in kroil. th get underneath has give the
last 2 a couple of whacks using a hammer a piece of wood but no luck yet. I have found a copper rod ( I think it was a ground rod) ..would it be soft enough to use on the
rod? I am pushing out the top ( head is off). It looks to me that the one may come out with the sleeve. If that is the case , is the sleeve something I get a new o ring and
just reinstall ( aft getting the piston out ) ?

Any advice ( including just be patient a let it soak ) is appreciated.

Ron

 

[leroy in ne]

Most ground rods are basically a steel rod with a thin copper tube over them. In other words not solid copper.

 

[rosedale123]

got it...i think ill just use oil/wood/patience

thanks man

 

[dewy]

wood ,i used apiece of green oak limb...yes new o ring an reinstall............dewy........

 

[used red MN]

Have the stuck pistons moved at all? If not have you tried pounding them down? Unless they have stopped at the very bottom of the stroke try pounding them down. You can usually get better contact with your wood block and a better swing. Just getting them to move a bit is over 75 percent of the battle. Once they move a little the penetrant lube can soak in rust boundary and lube the areas that are binding. Good luck!

 

[tomturkey]

What is your plan, reuse pistons and sleeves?? If your reusing or hope to reuse the pistons I would not beat on them. If the pistons are that stuck your sleeve will have a rust ridge that may not hone out, and could cause ring problems later on. If your trying to save the pistons, push the sleeve and all out of the block then cut the sleeve with a die grinder(don't get into the piston top side or skirt)once cut above and below with a shallow kerf along side the piston use a cold chisel and split the sleeve, worked for me gobble

 

[rustred]

FIRST... get a hone and hone out all rust from top of piston. wipe and clean as you go and blow out with air around piston.
second... get a round piece of hardwood the same size as cyl. and fits in snug. then get a post mall and smack it hard. piston will move down. then hone out the rest of the rust and clean good. then get a piece of hard wood to push on the rod from the bottom with a hyd. jack. be very careful a round crankshaft! if piston went down it will come back up and out. sitting there waiting for some miracle oil to work you will be waiting till this same motor would have had a complete overhaul and still be waiting. in other words don't wait. get to it and at it, cause if you don't get to it you wont get to it to get to it!

 

[rustred]

and no way use any metal pushing on the rod. asking for damage , then its resize time. plus they should be checked for roundness anyway.

 

[derwen1959]

If the pistons are stuck this suggests the tractor has stood a very long time so I suggest a complete engine
Dismantle ...also there is good chance the clutch is stuck
I would guess the engine is well used. So for it to run good fit new pistons and liners
I have just thought of something else..... if it has stood for a long time it is possible that it was parked up with some fault

 

[Frank Caldwell]

Try coke a cola

 

[Dennis P]

Even if you do get them knocked loose, there will more than likely be rust pits in the cylinder wall where the rings froze.

 

[old]

If you can do so safely put a table spoon of gas in the kroil an then light it up and keep adding ga to it till you have burned off all the oil/gas mix. Of course do not add more gas till the fire goes out. Doing that heats up the cylinder but not the piston so it expands a bit to help free things up. BTDT a few times to free one up