I had problem with engine oil pushing out ps reservoir. I replaced p.s. pump seal . I started truck yesterday without ps pump on and is oil is running out compressor as I expected. Is this normal or is there also a seal in compresser? I would of thought seal in ps pump should prevent ps fluid from pushing out but is it for both? You would think a seal is designed to hold pressure in one direction. I installed the seal with spring/open lip in , flat side towards compresser so not sure how well it will hold engine oil back.
2010 International transtar compresser to power steering pump oil seal
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Jhncp, Feb 17, 2020.
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Oil will come out there as it is now the path of least resistance for the flow. It is unpressurized oil flowing back to the pan. You didn't say what engine you had, but compressors have a drain tube or oil flows back to pan through a drain hole where the compressor mounts to the engine. If your problems persists, you might have a blocked drain.
spsauerland Thanks this. -
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Those just drain back into the block and down into the pan. No seal on the compressor, it relies on the pump seal.
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Heavyd Thanks this. -
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