1 ton dumper

[Lloydbuilder]

No unlikely, I'd say something is a miss since the engine change? Can you take a picture of the solenoid you are putting live to and which way round you've connected it up. Also a picture of the lights on the Terex box when engine running and in forwards or reverse. Then with just the key on but engine not running and drive in neutral. Gives us a clue about the wiring under the dash and can see if anything has been bypassed in the past.

Did you also swap the flywheel across and the engine adapter plate so we can rule out the distances being wrong between the pump and flywheel coupling. Also did you feel them mesh and have to rotate the pump or engine to get them lined up or did it just go together as they are normally a snug fit and take some jiggling into position.

No unlikely, I'd say something is a miss since the engine change? Can you take a picture of the solenoid you are putting live to and which way round you've connected it up. Also a picture of the lights on the Terex box when engine running and in forwards or reverse. Then with just the key on but engine not running and drive in neutral. Gives us a clue about the wiring under the dash and can see if anything has been bypassed in the past.

Did you also swap the flywheel across and the engine adapter plate so we can rule out the distances being wrong between the pump and flywheel coupling. Also did you feel them mesh and have to rotate the pump or engine to get them lined up or did it just go together as they are normally a snug fit and take some jiggling into position.

I will check this out and get back thank you

 

[Lloydbuilder]

I will check this out and get back thank you

All 3 lights are on when ignition is on and when started, and stay on when in forward or reverse. The light is on the solenoid.

The fly wheel cover was swapped from the old engin and is definitely engaged with the pump.

 

[Lloydbuilder]

All 3 lights are on when ignition is on and when started, and stay on when in forward or reverse. The light is on the solenoid.

The fly wheel cover was swapped from the old engin and is definitely engaged with the pump.

 

[Mick-the-fitter]

So I guess the rad and oil cooler were removed to fit the engine, how much hydraulic oil was dumped and how much was put back in?

 

[Mick-the-fitter]

It will tip and steer with little oil as the feed is from the bottom of the tank, the hydrostatic trans runs the same oil but is a different circuit.

 

[Lloydbuilder]

It will tip and steer with little oil as the feed is from the bottom of the tank, the hydrostatic trans runs the same oil but is a different circuit.

Thanks Mick, I have just filled the oil up, plenty in now and still nothing

 

[Mick-the-fitter]

There are two solenoid caps on the transmission, if you run a live and earth to one at a time, it should drive forward or backwards, but it needs also to take the brake off, do you have a hand brake light on the dash?

 

[V8Druid]

All 3 lights are on when ignition is on and when started, and stay on when in forward or reverse. The light is on the solenoid.

The fly wheel cover was swapped from the old engin and is definitely engaged with the pump.

the light may be lit in the plug but does not mean the coil is functional and pulling the armature in the valve ...
have you tried energising the coil with a suitable metal rod in the coil to see if you have a magnetic field to operate the valve's shuttle/armature ?

 

[Lorenmasc]

Thanks Mick, I have just filled the oil up, plenty in now and still nothing

Hello, did you find the problem? I have exactly the same symptoms on my terex hd 1000?