I am having trouble with my 4440. It blew the head gasket a while ago and I tore it down last week.
It got new shims for the cylinders and it was installed by a JD mechanic 2000 hours ago. I don't know why it blew the gasket now but I'll have to measure the cylinder heights.
The gasket is blown between two or three cylinders and exhaust gasses pressurized the cooling system and some very little amount of water got into the oil while it is standing. Didn't change the color of the oil but an analyze showed it.
1. I could get two different gasket kits for this engine, both original JD, both containing the same gaskets but for two different prices. The gasket I have had in it the last 2000 hours is from the cheaper kit. It is a fiber type with steel rings around the cylinders and orange rubber around the water jackets.
What part number is the best gasket for this engine?
2. Head bolts, I ordered new ones, are there only one option for these bolts? I have heard that the changed over the years?
3. What are the most up to date torque specs for the head bolts? What are the height specs for the cylinders?
Maybe you, TimS, can help me with your experience? All mechanics who worked on these tractors when they were new are retired and I don't want to do this again.
Thanks!
It got new shims for the cylinders and it was installed by a JD mechanic 2000 hours ago. I don't know why it blew the gasket now but I'll have to measure the cylinder heights.
The gasket is blown between two or three cylinders and exhaust gasses pressurized the cooling system and some very little amount of water got into the oil while it is standing. Didn't change the color of the oil but an analyze showed it.
1. I could get two different gasket kits for this engine, both original JD, both containing the same gaskets but for two different prices. The gasket I have had in it the last 2000 hours is from the cheaper kit. It is a fiber type with steel rings around the cylinders and orange rubber around the water jackets.
What part number is the best gasket for this engine?
2. Head bolts, I ordered new ones, are there only one option for these bolts? I have heard that the changed over the years?
3. What are the most up to date torque specs for the head bolts? What are the height specs for the cylinders?
Maybe you, TimS, can help me with your experience? All mechanics who worked on these tractors when they were new are retired and I don't want to do this again.
Thanks!