|richardinnz said: (quoted from post at 22:24:30 01/27/13) Coolant pump on a 6068 is belt driven, mounted low down on the front cover, just has a ring of M6 screws holding it in after you have pulled a hose and water tube. Unless the aluminium housing it is bolted to has corroded out behind it then it would be unlikly this is your problem.|
Stick the over flow hose in a bottle with water in it, bottom of hose under the water, if you get bubbles when the engine is running you have a failed head gasket, or on a later engine it could also mean a failed EGR cooler. We have been caught out with that one on a 7530 tractor, wierd build because it had a Mexican engine in a Manhiem tractor and not a Saran motor.
The engines will also suffer the same old liner troubles if the motor has not had Thermogard (I think this is called Coolgard in some countrys) in the system. There are also plenty of John Deere DTAC solutions about liner protrusion on these engines so beware to check it properley. You really need to get John Deere CTM104 for correct repair specifications.
Well the water pump doesn't seem to be the problem or the bearings aren't out anyway. It's not looking good as nobody has ever put any Thermogard in it.
Gonna have to pull the pan and pressurize it.
BTW, it doesn't have the EGR cooler as this machine is probably a 2002 model.
I guess by the DTAC solutions you mean service updates along the way on these engines, and CTM 104 is an updated procedure for checking liner protrusion? This post was edited by d9gdon at 09:37:23 01/28/13.