Case 885 torque amplifier

[spark plug]

a good friend of mine has just acquired a 885 and among other minor issues the torque amplifier isn’t working.

He has asked me to have a look and see what I can figure it out. The wiring on the tractor has seen better days, so first I will be checking the wiring from the toggle switch to the solenoid, would I be correct in thinking this can be found behind the left hand fuel tank?

Has anyone got any tips or tricks when it comes to these toque amplifiers?

 

[Drillman]

We kept fixing ours and it kept going wrong again.

In the end it stuck in low so we gave up and left it there!

 

[milkloss]

Our two work sometimes, sometimes not. Variety is the spice of life....... keeps things interesting

 

[essexpete]

Gapples, Richard W, agrimax and one other who's name escapes me will all be able to give pointers.
We had an 884 repaired years ago and the TA pack leaked and slipped soon after. The Company that carried out the work repaired again and later it still failed. I found out some time afterwards that there may have been an issue with a worn shaft and a new seal on working properly very briefly. My point being some considerable care and some knowledge is advisable. These particular mechanics had carried out many successful TA repairs but could still get caught out.

 

[Jontym]

It was just a bad earth wire on the side of the gearbox on ours, when we had one twenty five years ago.

 

[spin cycle]

a good friend of mine has just acquired a 885 and among other minor issues the torque amplifier isn’t working.

He has asked me to have a look and see what I can figure it out. The wiring on the tractor has seen better days, so first I will be checking the wiring from the toggle switch to the solenoid, would I be correct in thinking this can be found behind the left hand fuel tank?

Has anyone got any tips or tricks when it comes to these toque amplifiers?

is it a black red or earlier cream red.....the former has an electric switch..the latter has a cable that stretches....t/a is the worst thing about ih tractors of that era.....i have a black/red stuck in high and a cream/red stuck in low

 

[spark plug]

It’s a black / red super two, and it’s stuck in low.

 

[spin cycle]

It’s a black / red super two, and it’s stuck in low.

could just be the switch then

 

[spark plug]

Wiring is going to be the first point of call, what’s the best way to access the solenoid?

 

[jre]

Got an 895 and have had to replace the toggle switch 2 or 3 times. I would try that first.

 

[v8willy]

Could also be the switch under the clutch pedal, it drops it to low when the pedal is fully pressed for easier gear shifting, could be the wiring there or even stuck in.

 

[agrimax]

I think Richard Devon is likely the other knowledgable chap on these...... An older thread here,post 12 shows the TA solenoid and external wiring connections that can be tested for power first. 895 rather than 885...Same thing!
https://thefarmingforum.co.uk/index.php?threads/case-895xl-ta-problems.74136/

 

[Richard Devon]

Everyone has pretty much summed up what to check::

1) check fuse 10
2) check the low speed dump switch activated by the clutch pedal (designed to dump the oil pressure out of the high side when shifting gear) - near the safety start switch
3) check to see if you have power down to the solenoid - the connector is in the left side of the square base-plate with about a dozen bolts just back from the bell-housing

 

[Richard Devon]

 

[Roy_H]

We kept fixing ours and it kept going wrong again.

In the end it stuck in low so we gave up and left it there!

IH always boasted that their TA was superior to MF's Multipower because unlike The Massey version, you had engine braking whether you were in low or high TA, whereas with The Massey you had to quote : "Shift to high for engine braking" Fair point, but in reality, The TA always gave more mechanical trouble than multipower.

 

[Richard Devon]

They gave more problems because people downshifted with a load on going down hill and it crucified them - the manual warns against this. Plus the earlier ones with a cable shift drivers tried to feather in which also allowed slippage.....electric helped to stop this, it was either in or out

 

[Benr]

Does anyone know if it is still the same torque amplifier in a CX 100. It’s got an electronic splitter on the main gear lever, just interested as good to know if I need to avoid shifting it into low under load.

 

[Richard Devon]

yes, its the same

 

[spark plug]

Thanks guys, have a better understanding of things now, should get a look at it over the weekend. I will keep you up to date with progress.

 

[essexpete]

It was just a bad earth wire on the side of the gearbox on ours, when we had one twenty five years ago.

Would you remember the exact location of Earth wire. I have an intermittent fault with an 895.
Thanks