Tractor issue

[Stubby]

1 hour ago, richy_B said:

I've started the thread so I'll finish it!

 

Spoke with my 'closest' dealer. They didn't have any experience of the Dorado and were a bit reluctant to get involved. As per my previous post I diagnosed it as a speed sensor. I didnt know where that was not did the dealer but they were able to send me a picture of the sensor from their workshop/dealer manuals. 

 

From that I found the sensor and the problem. Looks like the sensor wiring had taken a hit. Wire had an obvious kink.

 

I stripped the outer wrap to reveal the 3 inner wires, hoping it was a wire break. It was a wire break on one strand but annoyingly it had pulled out right at the sensor so I couldn't repair. So new sensor....

 

Dealer said they don't make the sensor anymore so it needs a new version, which wasnt compatable straight up. It needed a mini ECU to be added in and all wired up. They gave me a quote of £380 parts and approximately £800 fitting plus VAT. Ouch.

 

So a bit of googling - found an brand new original in the midlands, fitted it, refilled transmission and tested. Perfect! £170 and 1 hour of my time. 

 

What Ive learnt : There are two sensors on the transmission that relate to engine input. One I believe is hydraulic and apparently can't be replaced. There is also a electric one (magnetic).  This is the one I replaced. They are referred to as wheel speed sensor but it might be a translation thing - it is a RPM sensors relating to the input engine speed. I don't know if they government anything else or just provide the driver with engine information, ie speeds, pto speed.

 

The fault is limits the engine rpm to 1800. 

 

Until the next breakdown, happy tractoring! 

 

 

I like a happy ending . ?

[richy_B]

 

[Humis]

Top job - better still my Dorado has just come up with exactly the same error... wonky speedo, everything.  So,  the sensor is one of the ones coming out of the transmission on the RHS if laying under the tractor facing towards the engine?

 

If that is the case can you remember which one, front or rear.... and when removing the sensor do you have to drop the transmission oil?

 

Thanks