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1586 Leaking Steering Hand Pump


Wisconsin Ron
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  • Wisconsin Ron changed the title to 1586 Leaking Steering Hand Pump

The lower end cap if leaking can be removed on the tractor, 5\16 bolts. There will be a large rubber seal around the sleeve when you remove it. Make sure you get the right new rubber sleeve as there are two different ones. Get your serial number and take old sleeve with you to your dealer. Get torque specs for the bolts when putting back together

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If your going to try this with it still installed it's going to take 2 people. Put a scrib mark across the side of the end cap/sleeve/and pump housing. It's always good to get everything lined up as close to where it was when going back together. If you've never done this before I would NOT do this without removing the motor. It's not rocket science but there are things that can go wrong when you remove the lower plate. You've got the gerotor that can fall, you've got the wafer springs that hold the vanes out and they can fall....I would not do it. It's not hard to remove, just unhook the 4 lines and remove 3 mounting bolts. Then you can mount it in a vise upside down so the is less a chance of things falling out of place that you don't know where they came from. When you reinstall the end plate and are tightening the bolts, make sure you are turning the pump as you tighten the bolts, and tighten the bolts gradually. This is why I said it would take 2 people to do this on the tractor, you need another person in the cab turning the steering wheel while tightening. Don't over torque.  It's easy to lock the motor if you don't follow these steps. More than likely the 3 rubber mounts that the pump mounting bolts go through are shot. Now is a good time to replace them also. 

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28 minutes ago, TB5288 said:

If your going to try this with it still installed it's going to take 2 people. Put a scrib mark across the side of the end cap/sleeve/and pump housing. It's always good to get everything lined up as close to where it was when going back together. If you've never done this before I would NOT do this without removing the motor. It's not rocket science but there are things that can go wrong when you remove the lower plate. You've got the gerotor that can fall, you've got the wafer springs that hold the vanes out and they can fall....I would not do it. It's not hard to remove, just unhook the 4 lines and remove 3 mounting bolts. Then you can mount it in a vise upside down so the is less a chance of things falling out of place that you don't know where they came from. When you reinstall the end plate and are tightening the bolts, make sure you are turning the pump as you tighten the bolts, and tighten the bolts gradually. This is why I said it would take 2 people to do this on the tractor, you need another person in the cab turning the steering wheel while tightening. Don't over torque.  It's easy to lock the motor if you don't follow these steps. More than likely the 3 rubber mounts that the pump mounting bolts go through are shot. Now is a good time to replace them also. 

I agree, take it off the tractor. Lots of parts can fall out and if you haven’t done one before can be a pain to put back together trying to defy gravity. Also make sure the pin in the bottom plate lines up with the rotor. I have see a few where it wasn’t and you will break the rotor, then you have to buy that one layer of the stack which is $130+. Parts are not individually available only each rotating group as a whole. 

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Agree x2 the gerotor can fall apart after the bottom cover is removed the metal sleeve around it will also fall down best to have it off turned upside down for service ,Too many things can get loose in a hurry

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