Valtra 6400 2005 year.

Puke.

Member
Mixed Farmer
Can someone help. Shift lights don’t come up on the dash and the tractor won’t move. Started it this morning lights came up drove around but wouldn’t change. Turned it off no joy hasn’t moved all day . It will probably move in the morning. Any ideas. Many thanks puke.
 
Location
North
Which lights came on (and stayed on)? Do you have gearbox hydraulic pressure? I believe it should move even if the shift solenoids were not working, wires cut or such. Wonder if the shaft turning the oil pump has lost teeth.
 

Yale

Member
Livestock Farmer
Can someone help. Shift lights don’t come up on the dash and the tractor won’t move. Started it this morning lights came up drove around but wouldn’t change. Turned it off no joy hasn’t moved all day . It will probably move in the morning. Any ideas. Many thanks puke.

Which lights came on (and stayed on)? Do you have gearbox hydraulic pressure? I believe it should move even if the shift solenoids were not working, wires cut or such. Wonder if the shaft turning the oil pump has lost teeth.

Maybe start her up and fetch something hydraulic to plug in,in fact have you tried pulling a spool lever to feel if it pressurises?
 

Puke.

Member
Mixed Farmer
Which lights came on (and stayed on)? Do you have gearbox hydraulic pressure? I believe it should move even if the shift solenoids were not working, wires cut or such. Wonder if the shaft turning the oil pump has lost teeth.
Shift light no 1 comes on usually when key turned on but are not coming up now. No lights no move.
 

Puke.

Member
Mixed Farmer
Which lights came on (and stayed on)? Do you have gearbox hydraulic pressure? I believe it should move even if the shift solenoids were not working, wires cut or such. Wonder if the shaft turning the oil pump has lost teeth.
Shift light no 1 comes on usually when key turned on but are not coming up now. No lights no move
Is it the same pump for hydraulics and the gearbox/steering? Anyway it should have an indicator light for gearbox pressure (if it works).
started up this morning cold.6 o’clock lights came up drove up the hill shifted 123 321 all good. Only for five minutes shifted to 2 and stayed there. Back to shed.turned it off started up again. No one home no lights no move . It will probably go again in the morning. Driving me nuts.if I don’t turn it off probably drive it all day.
 
Location
North
I thought the drive is the only ECU on a Valtra 6400 but there indeed seems to be a small box.

The system has two solenoid driven valves. I thought it should move if both solenoids were idle but perhaps not. Not knowing how the power shift drives work, perhaps the "all idle" state means no drive. Having driven, and parked a similar tractor I though the transmission was engaged when parked (shut down) but the tractor has a turbine that anyway allows the tractor to move even when parked and gear engaged. Three power shift gears needs three out of the totally 4 states of the control relays. Would it mean no drive when solenoids are idle, first gear with one solenoid active, second and third gear with the rest of the two (hopefully a sequence of solenoid one, both solenoids, solenoid 2 to avoid the simultaneous change of both solenoids and hydraulic drives).

I would then feed measurement wires from both solenoids hot side and monitor the voltage on each gear when the gears work, then compare the state when the tractor does not move.

Since all indicator lights are off when the issue is active, I'd also check that the fuse gives a good contact (F11).

The forum must have several mechanics who have worked with a similar transmission and should be able to provide proper help. Are all after the opportunity to be able to charge for the repair?
 

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Puke.

Member
Mixed Farmer
I thought the drive is the only ECU on a Valtra 6400 but there indeed seems to be a small box.

The system has two solenoid driven valves. I thought it should move if both solenoids were idle but perhaps not. Not knowing how the power shift drives work, perhaps the "all idle" state means no drive. Having driven, and parked a similar tractor I though the transmission was engaged when parked (shut down) but the tractor has a turbine that anyway allows the tractor to move even when parked and gear engaged. Three power shift gears needs three out of the totally 4 states of the control relays. Would it mean no drive when solenoids are idle, first gear with one solenoid active, second and third gear with the rest of the two (hopefully a sequence of solenoid one, both solenoids, solenoid 2 to avoid the simultaneous change of both solenoids and hydraulic drives).

I would then feed measurement wires from both solenoids hot side and monitor the voltage on each gear when the gears work, then compare the state when the tractor does not move.

Since all indicator lights are off when the issue is active, I'd also check that the fuse gives a good contact (F11).

The forum must have several mechanics who have worked with a similar transmission and should be able to provide proper help. Are all after the opportunity to be able to charge for the repair?
 

Puke.

Member
Mixed Farmer
I thought the drive is the only ECU on a Valtra 6400 but there indeed seems to be a small box.

The system has two solenoid driven valves. I thought it should move if both solenoids were idle but perhaps not. Not knowing how the power shift drives work, perhaps the "all idle" state means no drive. Having driven, and parked a similar tractor I though the transmission was engaged when parked (shut down) but the tractor has a turbine that anyway allows the tractor to move even when parked and gear engaged. Three power shift gears needs three out of the totally 4 states of the control relays. Would it mean no drive when solenoids are idle, first gear with one solenoid active, second and third gear with the rest of the two (hopefully a sequence of solenoid one, both solenoids, solenoid 2 to avoid the simultaneous change of both solenoids and hydraulic drives).

I would then feed measurement wires from both solenoids hot side and monitor the voltage on each gear when the gears work, then compare the state when the tractor does not move.

Since all indicator lights are off when the issue is active, I'd also check that the fuse gives a good contact (F11).

The forum must have several mechanics who have worked with a similar transmission and should be able to provide proper help. Are all after the opportunity to be able to charge for the repair?
Many thanks for your advice now stuck in 2nd but sprayed 3 paddocks and didn’t fiddle with any buttons .will check solenoids.has three.above pto solenoids cleaned 2 but can’t get 3 off.will try again.getting closer maybe.
 

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Red Tractor drops launch of green farming scheme amid anger from farmers

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As reported in Independent


quote: “Red Tractor has confirmed it is dropping plans to launch its green farming assurance standard in April“

read the TFF thread here: https://thefarmingforum.co.uk/index.php?threads/gfc-was-to-go-ahead-now-not-going-ahead.405234/
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