Restore ym 2210 problem

[luky69]

Hi all, some days ago i've start restore my yanmar 2210d, but when i opened the engine the cylinder head was in bad condition, see pictures, i don't no what happen. Have you ideas? thanks

 

[winston1]

Looks to me like the corroded cylinder has run with coolant leaking for an extended period of time. Needs to go to the machine shop and see if it can be repaired.

 

[luky69]

Thanks Winston, another question, the thread on the crank shaft, is right in both side or not?

 

[kenmac]

I agree with Winston..you have run this tractor for some time with a blown head gasket / cracked head .

 

[careyo63]

May have a cracked block. The ports I can see and the Head itself looks fairly good. No Doubt have it checked. Hope it's only the head.

 

[winston1]

Thanks Winston, another question, the thread on the crank shaft, is right in both side or not?

Don't know. Would nearly bet the flywheel nut is right hand just because of rotation but sure don't know it for fact. Part number for flywheel nut is 124450-21530 and pulley nut is 124160-21670. Googled those but found no mention of size or which way they turn. I would think there might be enough thread sticking out to determine.

 

[normde2001]

What exactly are you referring to? Looks normal to me. Lap in the valves and you are good to go.

 

[luky69]

Thanks for reply, both nut are rigt hand, it is very hard to unscrew!!

 

[winston1]

What exactly are you referring to? Looks normal to me. Lap in the valves and you are good to go.

It is going to take a lot of lapping for the left hand valve shown in picture two.

 

[careyo63]

I would be more worried and concerned about were the water is coming from. The Valve Seats look in fairly good condition. I've seen a lot worse. Esp. working at a Machine shop in my late teens and early 20's.