MF 135 Perkin 3 cyl Diesel sitting for 20+ years

[briaineo]

Got the cylinder head off today

Do not have the equipment to lift out engine so will be removing the pistons in frame.

Anyone any advice of this? From looking at the picture the piston in number 2 cylinder will be difficult.

Is it a matter of dropping the sump and disconnecting the connecting rods and hammering out with a block of wood from below?

Is there room without removing the crank? First time doing anything like this...

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[blacklion66]

I've freed up two old lister diesels by filling the cylinders full of kerosene and letting them set for a week or so

Never worked on a Perkins before but if you can get to the front drive shaft that will have some sort of nut on it
a electric impact wrench might even help

Can you remove the engine and transmission?

Pulling the machine to turn the engine over? one of 3 things will happen #1 the engine will turn over #2 the wheels will drag on the surface you are pulling on #3 you will break something expensive.

Patience, penetrating oil, small propane torch and being very stubborn & made a few cuss words might get the job done

LUCK!

 

[fried1765]

Got the cylinder head off today

Do not have the equipment to lift out engine so will be removing the pistons in frame.

Anyone any advice of this? From looking at the picture the piston in number 2 cylinder will be difficult.

Is it a matter of dropping the sump and disconnecting the connecting rods and hammering out with a block of wood from below?

Is there room without removing the crank? First time doing anything like this...

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Go SLOWLY!
Be patient!

Mix ATF 50/50 with acetone, and pour into top of cylinder.
Wait for a week or two...or 3
If fluid evaporates sooner, add more.
Be PATIENT!!!

 

[gary49]

You don't lift the engine out to remove it, you "split" the tractor. The engine and transmission are structural. Any tractor without a frame is like that. Typically it's done with some kind of rolling apparatus on the front part and supports under the back part. Google it, probably won't find a video of the exact tractor, but you'll get the idea. I expect you will have to remove the crankshaft to fix the engine, water in the crankcase will corrode the bearings and journals, camshaft as well. Plan on a new clutch, might as well as long as you've got it apart.

 

[goeduck]

Back in the sday we used to fill the cylinders with penetrating oil, put the kick crank in the front of the tractor, jack the crank handle up with a bottle jack and let it sit for a day or two. Usually did the trick.

 

[pmsmechanic]

I once loosened up a tractor by lifting one wheel off of the ground and rocking it back and forth while in gear. There was enough slop in the transmission that soon I had the motor turning over. I had pulled the spark plugs and squirted oil in.

 

[thepumpguysc]

If your going to remove the pistons from the TOP.. feel around the top & MAKE SURE it doesn't have a "lip"..
That LIP is called a "ridge".. its a space where the combustion gasses form a ridge of carbon.. harder than a rock..
They sell a TOOL called a ridge reamer to cut the carbon.. its made for this reason..
IF u TRY to get the pistons out & theres a ridge.. you'll break the rings & possibly the ring lands on the piston.. not to mention a WHOLE LOTTA hammering...
BTW> u should have de-greased the motor before attempting this teardown..
Its not to late.. get some "Gunk" foam engine degreaser or some oven cleaner & have at it..

 

[thepumpguysc]

BTW>> who's doing the fuel system?? pump & injectors..
I'd love to get my hands on'm.. Just click on my screen name for contact info..

 

[gary49]

BTW>> who's doing the fuel system?? pump & injectors..
I'd love to get my hands on'm.. Just click on my screen name for contact info..

OP is in Ireland, I believe.

 

[briaineo]

Yep in Ireland, thanks for all the replies they were a great help, didn稚 actually realize that the engine was a structural part of the tractor

I have got the injectors rebuilt last year, been pouring atf and acetone down the injector holes for months now, also tried brake fluid.

Havn稚 gotton around to the injector pump yet, are they difficult to rebuild yourself? Rebuilt the power steering control valve on the 69 Vette over the weekend and pulled the cylinder head on the MF135 that was my weekend...

I see the injector pump rebuild kits are not too expensive.

I was hoping to be able to drop the oil sump and remove the pistons and inspect them. From looking at tractor supply store website they seem to be the four ring piston as opposed to the 5 ring ones. (Only going by the piston bowl area ontop shape).

Just one question: if I remove the sump and disconnect the con rod bolts then I can attempt to insert a length of timber between the crank and bore wall and try and hammer the pistons out?