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1105 hyd problems

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Tim

01-12-2003 07:42:36




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anybody know why 1105 might lose hyd at various rpm for no apparent reason. pumps have been rebuilt. stopping & revving up will return pressure for indefinite period. Thanks.




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Rob

01-12-2003 12:47:17




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 Re: 1105 hyd problems in reply to Tim, 01-12-2003 07:42:36  
Tim

Check your priority valve if you have had both pumps rebuilt. It is located right behind your engine. Have you checked your hydraulic filter in front of radiator? Pickup tube for charge pump has a screen in the bottom of your center housing. It could be plugged, ie. a brake disc flaking and plugging the screen. Check the unloading valve under your feet. Its a pain if you have a cab, it unloads the charge pump oil during start-up. Hope this helps.

P.S. It helps to have a service manual!

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