Here's a suggestion for a test I learned from experience with a blown head gasket on a 4650. Get in the cab and turn the heater on high. Is there heat? If no heat, temporarily splice a section of clear hose into a heater hose, start the tractor. If you have air in the heater hose you have compression gases getting in the coolant.
The 4650 I'm talking about used 2 quarts of coolant a week. Otherwise it ran fine. The heater had no heat in the winter and That is what led to the discovery of the bad head gasket by using the clear heater hose. Let us know what you find. Jim
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Today's Featured Article - Updatin The Charging System of Your Older Tractor - by Tyler Woods. Older tractors have externally regulated generators or externally regulated alternators, in some instances. That means there is one device that turns energy from the fan belt into electrical energy,
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