Combines oil pressure

Yes it is. This was discussed to some extent in a service bulliton when we first started using Deutz engines. This was most noticable at idle. I believe a spring and or poppet could be changed in oil filter head if one was worried about it. Never changed any and never had any oil pressure related problems. Take care

Why they take the heat from the engine oilIJ Isn't the hydraulic oil hot enoughIJ P.D. Some european Deutz tractors used electric and_or diesel heater for the cab.

The fuel fired heater was an option. Just a thought here, but the engine works while driving from one field to the next generating the heat, whereas the hydraulics wouldn't. My cab cools off just driving in at night. Unless I'm mistaken motor oil is normally hotter than hydraulic oil.

Checked bulliton I was talking about above. There was a few newer machines like '93 or '94 with the inline six 913C that needed a poppet changed for it could be sticky on a some. They must of changed something in there or parts were not machined far enough on some. The problem was pressure could drop to much when oil was colder than about 40F. They should of been campaigned and likely no problem with prior machines. Pressure surely does drop on any of these 913s when heater is turned on. I also know on the tractors with heater core at top of cab that the hot engine oil will not push the cold oil threw core if it is to thick thus you need thiner oil for very cold temps. The engines we have in Gleaners have thermostat for oil so it should be kept up in the 180F range unless heater or heat transfer out pan ect. is losing what engine produces. Running engine aways above idle especially driving down road should be enough to have thermostat in operating range. Maybe yours is leaking by to much. There is a thermostat for hydralic oil also at least on the inline Deutz used in the combine but it is locked open for this application. When Deutz had the option of tieing into engine oil it was surely the way to go for Gleaner. We've only had one little Deutz tractor around with cab and it had the fuel fired heater that seemed to work quite good. That little Deutz had a rigid fan drive and no thermostat for oil so it surely needs something other than engine oil for heat. I remember once when Deutz come into our world and they braged about pulling dipstick after working tractor hard and wiping it on your wrist. That would be a burning experience with the Deutz that are common to us. Have a good one.

Had the same trouble with my '87 R60. New sending unit on the engine fixed her up! I can remember what the test was for the gauge though. Its either ground out the lead at the sender or put juice to the gauge and see what happens. Good luck! tom

I'm with you tbeck. Often time just change engine RPM to get a little different vibration to it and it would go to working. As I remember they would most commonly bother down toward idle speed.