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Case Tractors Discussion Forum

Case 2470 power shift problems

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Doug Morgan

04-21-2008 04:52:58

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I bought a 2470 and the power shift does not work. I have all 4 gears and reverse but I don't have 2nd and 3rd range on my powershift. Also when I depress the clutch it loads the engine and it sounds like it is pulling hard. Does anyone know what might be the problem?

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jogl

04-23-2008 04:22:57

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Re: Case 2470 power shift problems in reply to Doug Morgan, 04-21-2008 04:52:58

Oh oh.

Guess I had better do the check sooner than latter because it definitely makes the engine work harder when I depress the clutch (inching pedal) on on ours. Also makes the tractor want to creep backwards when the inching pedal is depressed.

JP.

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Triplerange

04-23-2008 06:46:04

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Re: Case 2470 power shift problems in reply to jogl, 04-23-2008 04:22:57

Could be your C-2 clutch plates warped causeing dragging and wanting to go in reverse.

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triplerange

04-22-2008 18:38:25

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Re: Case 2470 power shift problems in reply to Doug Morgan, 04-21-2008 04:52:58

I think Jim is right...sounds like C3 clutch pack is not engaging for some reason. Good luck with your repair. I'd check the valve assembly first...and make sure everything works in it...and that the range lever is moving the valves correctly...dont know where that assembly is at on the 4 wheel drive tractors but it should be on top of the transmission.

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Jim B

04-21-2008 21:45:11

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Re: Case 2470 power shift problems in reply to Doug Morgan, 04-21-2008 04:52:58

If you do your own repair work... the advice from "jogl" is good. The Case Service Manual is an excellent resource for: understanding "How it Works" (an actual Section within the Manual), Troubleshooting, Testing, and step-by-step Dis-assembly and Re-assembly.

Some basic RPS information >>>
All power-shift gears require two clutches to be applied. I believe it's the C3 clutch that's applied for both 2nd & 3rd gear. Not exactly sure, from memory, and my manual is on-loan at the moment.
Also, it is NOT normal for the engine to be loaded when the clutch (inching pedal) is depressed. What is normal... is there will be an increase in gear noise because the C4 clutch engages and the planetary gears are therefore spinning in reverse. This action works as a trans-brake so as to shift the range gears without clashing. If the engine is being loaded when the clutch is depressed it's likely that another clutch is not fully disengaging.

Good Luck.

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jogl

04-21-2008 10:41:38

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Re: Case 2470 power shift problems in reply to Doug Morgan, 04-21-2008 04:52:58

We just bought a 2870. That is normal for it to load up the engine when you push the clutch.

As for the rest of the power shift not working the advise usually given is to get a manual and follow the procedure for checking the pressures of the oil to the various power shift clutches.

The manuals are pricey. However I broke down and bought one and discovered that it is an excellent shop manual.

If you search around this forum you will find some other threads on this subject with posts from some guys who have very good knowledge of these machines.

JP.

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