Cub head stuck

grandpa Love · Mar 7, 2022

Poor old Cub. Head is stuck!! Broke 3 bolts,1 broke at the block, 2 broke right under the bolt head. We drilled those out to the block. Tried driving wedges, pry bars, screwdrivers between the head and block. Finally got the Massey and tried picking the head off with the loader. Nope!! Picked front of cub up, head stayed on..... Lots of blue goo oozing out around head. Even tried a grinder with a cutting disk, got it in as deep as possible. Still stuck. Ideas????

Dune Country · Mar 7, 2022

dunno, maybe put the plugs back in and pull it around the yard?

SVcummins · Mar 7, 2022

Soak it a few days or weeks in a good penetrating oil

tomtinker · Mar 7, 2022

Is the blue stuff Loc-tite Lol.

37 chief · Mar 7, 2022

Heat the head with a torch rosebud tip if you have one. It's probably blue RTV. Stan

rustred · Mar 7, 2022

get some 1/8 x 2 inch flat bar and sharpen one end like a chizel, make two. then just keep working your way around the gasket by tapping it in. spraying penetrating oil is of little use till u get the head to move up a bit, and best to spray it in the bolt holes. plus keep this upward pressure on while doing this. this problem is more common when there is head studs. had on years ago on a w-30 and in the end a chunk of the block came out with the head. since you have been using a cutting disc the block and head might be toast anyhow now. something is odd here.

Janicholson · Mar 7, 2022

Create a pair of modified spark plugs by brazing in grease fittings. Find the two cylinders with both valves closed (one on compression one on power stroke and pump grease into them (both at the same time) this can put more than 2000 psi in the cylinder. (it will be a bit messy) but works. Jim

old · Mar 7, 2022

If it will turn over fill the cylinders with ATF or other such and give it a spin and the head will come off but watch your feet

560Dennis · Mar 7, 2022

Put the compression tester hose in the cylinder on compression,air it up as far as you dare go with pressure .
Heat head up 2 300 400 degrees then pressure, got a rose buds torch ?

timcasbolt · Mar 7, 2022

I've had to split them apart with cold chisels and then clean up the burrs after.

Geo-TH,In · Mar 7, 2022

Never thought of using grease gun.
Dewalt grease guns produces 10,000 max PSI
The 20V MAX* Grease Gun powers through clogged grease fittings with a motor that delivers 10,000 max PSI. This tool is ideal for high-flow applications, with the pump pushing up to 5 oz. per minute.

20V MAX* Grease Gun Kit DEWALT

Might want to put head bolts back in so head doesn't go flying through the ceiling...lol

Janicholson · Mar 7, 2022

Grease doesn't compress, so it should only lift off, not explode. A head bolt or 2 might reduce a persons anxiety. Jim

rustred · Mar 7, 2022

i was under the impression the engine was stuck. yep same as a hydraulic cyl. for that matter that would work also, quicker but messy.

kevinstuff · Mar 7, 2022

When you reassemble the head bolts and
studs do not ever use grease , as almost all
will break down and corrode , leaving you
the same damage your dealing with now .
Use petroleum jelly , it is inert , and will not corrode
Or cause rust , I am sure locktite makes a product for
for sealing threads exposed to the water jacket also .

MNGB · Mar 7, 2022

A friend of my had a Ford Model "A" engine that he could get the head to come off had all the bolts out tried different finally put the spark plugs in made a temp gas tank hooked up a set of jumper cable and started the engine he said it ran for 4-5 minutes and the head popped off it was good to go
GB in MN

Geo-TH,In · Mar 7, 2022

When I take a hyd cylinder apart, I use hydraulic pressure, 2000 psi. Oil doesn't compress much. Sometimes the piston gets stuck and when it lets go, the piston and rod goes flying across the pole barn. I make sure the car or truck isn't parked nearby.

grandpa Love · Mar 7, 2022

Tractor won't run......

old · Mar 7, 2022

Is it locked up?? As in will not spin over?? If it does spin over fill it with oil or even put some rope down the spark plug holes and then spin it over and the oil/rope will push the head up and off

wisbaker · Mar 7, 2022

When loading certain uh packages into a B-52 Bomber after you get the rack holding the packages in place you hook up a special grease gun with 2 hoses to some zerks on the side of the bomb bay. By pumping the grease gun you can lock the bomb rack in place on a upload or release the bomb rack on a down load. Yes you can develop some pretty good pressure with a decent grease gun.

cjunrau · Mar 7, 2022

Sharpen an air chisel and go all the way around at the gasket Amazing what vibration can do.

Geo-TH,In · Mar 7, 2022

If all else fails I wonder what a little black powder would do??? Use long fuse and run; lol

grandpa Love · Mar 7, 2022

Tried an air chisel...... Lol. For 15+ minutes

westga · Mar 7, 2022

If you have an acetylene cutting rig flow some acetylene with a small shot of oxygen in to the sparkplug hole then off to the side light the torch and put the flame across the plug hole. The head may pop off or worse. Maybe a good idea to put some head bolts back in.

crsutton81 · Mar 7, 2022

This may be a little radical, but if you rigged up a way to hook the hydraulic system from maybe a wood splitter to the spark plug holes and gently try to pressurize it off ? I may would let it run awhile to get the oil hot and thinned down before trying so maybe it would be more prone to seep into the rusty stuck areas. Keep an eye on the pressure Guage of system. If it would ever crack loose, It'd probably come on off.

old · Mar 7, 2022

My dad us to tell a story about a car he and some friends where working on. They where taking the head off but once the bolts where out the head would not come off. One of them said why don't we fire it up. It was a convertible by the way. They fired it up and the head flew off and landed in the back seat. If this is a true story I don't know but my dad told it many times

J Hamilton · Mar 7, 2022

While pulling up on the head like you were with your Massey, have you tried (with a block of wood and a small 3-5lb sledge) giving it a few good whacks along each side of the head? I've gotten a few to come loose that way.

SVcummins · Mar 8, 2022

I made the mistake of hitting the starter on a Diesel engine with one of the injectors loose that thing shot out of there like a bullet and flew clear across the shop

560Dennis · Mar 8, 2022

How did you get the head off ?

Uncle murph · Mar 8, 2022

Turn it upside down and put your foot under it,I guarantee it will fall right off.

kencombs · Mar 8, 2022

late to the party, but a good stiff but thin putty knife works for me. drive in just a little at a time working your way around the head.. a 5-way painters tool is good too.

fixerupper · Mar 8, 2022

Late to the party here too. I tried the grease gun trick one time. The Exhaust valve was not totally sealing and i filled the exhaust manifold with grease. Just something to watch for. Might not hurt to plug some compressed air into that cylinder and listen for leaks.

Cub head stuck

Well-known Member

Well-known Member

Well-known Member

Member

Well-known Member

Well-known Member

Well-known Member

Well-known Member

Well-known Member

Well-known Member

Well-known Member

Well-known Member

Well-known Member

Member

Well-known Member

Well-known Member

Well-known Member

Well-known Member

Well-known Member

Well-known Member

Well-known Member

Well-known Member

Member

Member

Well-known Member

Well-known Member

Well-known Member

Well-known Member

Member

Well-known Member

Well-known Member

Similar threads