Case 5240 Jerky Clutch

RedBarnFarm · Mar 19, 2019

I have a Case 5240 powershift that has a jerky clutch, worse under a load. It is not as bad in the 1st gear range but in the 2nd gear range no matter how slow you try to let off the clutch it just jumps/jerks. Shifts through all the gears fine and pulls fine. Any ideas? I hadn't noticed it just driving the tractor around but I had an offset disc on today plowing and if I stopped and tried to start again it would about jerk the front wheels off the ground not matter how you feathered the clutch.

Adirondack case guy · Mar 19, 2019

Put your heal on the floor board and pivot your foot so you have better control of the pedal.
Loren

RedBarnFarm · Mar 19, 2019

I've tried it and it does start to slowly move but you get to a point and it just completely releases and jerks no matter what.

ADB-Ia · Mar 19, 2019

Not familiar with the 5240 but a couple possible culprits. Does the 5240 have a mechanical linkage for the clutch? If so it could be the linkage binding and making the motion jerky.
Or if it has a cab, loose cab mounts can make the clutch action jerky.

Donald in MN · Mar 20, 2019

the case IH online parts pages show that model has a cable clutch linkage. those cables get sticky. i had one on my 3394 and after i replaced it it
worked smooth. if you replace it yourself have someone print out the specs from a service manual it has to be pretty close otherwise it wont work
right,

RedBarnFarm · Mar 20, 2019

(quoted from post at 17:16:35 03/20/19) the case IH online parts pages show that model has a cable clutch linkage. those cables get sticky. i had one on my 3394 and after i replaced it it
worked smooth. if you replace it yourself have someone print out the specs from a service manual it has to be pretty close otherwise it wont work
right,

Thanks that is worth a look. Seems to move freely but hard to know for sure. I ordered the shop manual for it so I should have it in a few days. I have noticed sometimes I can put it in gear and let off the clutch and nothing happens, take it back out of gear and then put it back in gear and it goes.

2290 · Mar 21, 2019

Hi,
Does this tractor do this using the shuttle lever only without the clutch.This is most likely an electrical issue such as forward pressure
switch,modulation solenoid or forward solenoid. It could be in the modulation spool if does this using the shuttle lever. The clutch is control with a
cable.The control valve is under the rear of the platform,you can see it looking in from the back easy to work on. If this does this in forward only
you could switch the forward & reverse solenoid or the forward & reverse pressure switches. Make sure you use a paint marker on the connectors,ether
with dots or different colors.

RedBarnFarm · Mar 21, 2019

Haven't noticed it doing it with the shuttle lever. It seems like it is just when you release the clutch going forward, haven't noticed the jerking action backing up. I'll try that today and see if it does it both ways or only forward.

RedBarnFarm · May 19, 2019

Just following up on this. CIHTECH has been helping me out some on the RedPower site and I very much appreciate it. Still having the same problem I am trying to run down. This is what I have tried to this point.

Tested forward solenoid - ok

Swapped the forward and reverse pressure switches - no change

Found some bare wires on those pressure switches and few other places in the wiring harness on the transmission, coated them with liquid electrical tape - no change

Tested pressure switches behind battery box - all 4 read 0.00 on the meter

Clutch cable seems to move freely

Transmission fluid is good, new filter

I have 5 flashes showing on the dash for the transmission light.

Clutch jerks when inching off of it only in forward and only when the tractor has warmed up. It will do it in any range and any ps gear. Looking for suggestions. I am wondering where all the ground wires I might need to check would be? I found one on the right side under the cab near the battery box. Clutch switches? I see 3 different ones under the left side of the console. I appreciate any input.

4435 · May 19, 2019

Way far from an expert here. I sorta thrive on electrical gremlins with some toast they are pretty good. Been some time since I worked on my 5250 but it would lose forward frequently and some times reverse also. Was a low voltage problem in the harness. I did a work around using the shuttle switch to trigger a set of five pin relays I direct fed from the starter solenoid You could use four pin too. Problem solved.

Those wiring harnesses are marginal when new and with age they lose the capacity to carry adequate watts to the forward and reverse solenoids. I finally wired a voltmeter in parallel and had inside cab to diagnose. I do have a service manual. HTH Tom

Case 5240 Jerky Clutch

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Adirondack case guy

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