Deutz 6180 ttv gearbox overheating

[DrDunc]

Oil level correct

Cooler rad fins clean

Filter not blocked

After four hours ploughing the gearbox oil reached 100°, and the oil over temperature warning code popped up. Couldn't say it's definitely not the sensor, but casing was bloody hot to the touch and I'd watched the temp steadily climb on the dash screen

Anyone any ideas what the problem could be?

 

[aidan]

Thermostat somewhere in the circuit

Have you a p&I'd drawing of overall layout

 

[davidroberts30]

Are there ranges you can select?
Is it in too high a range?

 

[DrDunc]

Are there ranges you can select?
Is it in too high a range?

No, there aren't user selectable ranges. It's the same gearbox Deere use in their 6 series autopower (ZF eccom). Four speed powershift and hydrostat, all controlled by the ECU

Long uphills on road haulage will put the oil temperature into the early 90's, but it soon cools again on a bit of level or downhill section. I've a valtra with hydrostat gearbox, and this behaves similarly..... So wasn't worried

Anxiety levels elevated after deutz overheat and not understanding the cause. Oil is darkened, but not filthy black like a clutch pack has gone, and there's no slip

 

[DrDunc]

Thermostat somewhere in the circuit

Have you a p&I'd drawing of overall layout

Gearbox is a ZF eccom 1.5

I've a workshop manual, but haven't studied it closely enough to discover if there's a thermostat in the cooling circuit. I'll make time now you've suggested thank you

(or someone says there's the problem, you fool)

 

[daveydiesel1]

Gearbox is a ZF eccom 1.5

I've a workshop manual, but haven't studied it closely enough to discover if there's a thermostat in the cooling circuit. I'll make time now you've suggested thank you

(or someone says there's the problem, you fool)

Many hours since it got filters and new oil

 

[DrDunc]

Many hours since it got filters and new oil

Oil 400h, filter 200h. Filter now changed but only been raking grass since replaced, so not working hard enough to cause high temperature

 

[DrDunc]

Could a blocked suction strainer cause it?

Would've thought pressure warnings first though?

 

[daveydiesel1]

Could a blocked suction strainer cause it?

Would've thought pressure warnings first though?

Sure shes not blowing a bypass valve on hard pulls as thatd heat the oil

 

[davidroberts30]

did it cool down again when left running not ploughing?

 

[Deerefarmer]

Does it have a transmission coolant pump like JD used? Pump failure or low coolant levels would cause a deere to overheat

 

[czechmate]

Oil level correct

Cooler rad fins clean

Filter not blocked

After four hours ploughing the gearbox oil reached 100°, and the oil over temperature warning code popped up. Couldn't say it's definitely not the sensor, but casing was bloody hot to the touch and I'd watched the temp steadily climb on the dash screen

Anyone any ideas what the problem could be?

There are the two ratios (trailer and plough on the dash), I have heated the oil using trailer for field work?

 

[czechmate]

No, there aren't user selectable ranges. It's the same gearbox Deere use in their 6 series autopower (ZF eccom). Four speed powershift and hydrostat, all controlled by the ECU

Long uphills on road haulage will put the oil temperature into the early 90's, but it soon cools again on a bit of level or downhill section. I've a valtra with hydrostat gearbox, and this behaves similarly..... So wasn't worried

Anxiety levels elevated after deutz overheat and not understanding the cause. Oil is darkened, but not filthy black like a clutch pack has gone, and there's no slip

This description sounds nothing like my ttv

 

[aidan]

Need to double check as actually getting hot and not just faulty sensor

 

[DrDunc]

Does it have a transmission coolant pump like JD used? Pump failure or low coolant levels would cause a deere to overheat

Don't think so, but the transmission gear pump pressure regulating valve spring has been shimmed. It very occasionally throws a low pressure error code going into stationary hold when idling. Blip the throttle and it clears, and only ever occurs when oil quite hot

Sure shes not blowing a bypass valve on hard pulls as thatd heat the oil

Could be the shimmed pressure relief valve? But I've been experimenting.....


Been out raking. Taped a bit of card over the radiator to block about quarter of the fins. Transmission oil gets into the high 80's. Removed card, and it drops down to 73° and remains there

I'm wondering if the cooler could be the issue?

 

[DrDunc]

This description sounds nothing like my ttv

What model is yours?

My lovely old girl is ten year old, and most definitely does not have field / road selectable ratios

You just select direction, press the foot pedal, and listen to the ripping purr that comes out the exhaust

 

[Daniel]

Swan Vestas.

 

[DrDunc]

Swan Vestas.

You cruel horrible person

How dare you suggest harming my precious pride and joy

 

[daveydiesel1]

Have u checked the temp entering and leaving the oil cooler

 

[DrDunc]

Have u checked the temp entering and leaving the oil cooler

Nope, obviously that would have been my next bright idea if you hadn't thought of it first

I'll get on onto it thank you