Power steering gear pump question

Cariboo4x4 · Jun 2, 2018

I thought to prime my power steering pump before I inserted it into front of engine. Its a 1961 Case W3 comparable to a 530. Its got the diesel 188. I poured oil into my reservoir and started to turn gear on pump with my hand. As soon as the oil got to pump it was hard yet not difficult to turn. It would trickle oil out of high pressure port. After a few turns it would spin backwards if I let go of gear. I'm assuming its simply building up pressure just with a few turns by hand.

kevinthefixer · Jun 3, 2018

If it's spinning backwards, it has to have air trapped in there somewhere. Does it have a bleed valve?

Tramway Guy · Jun 3, 2018

Or it could be building up a vacuum on the input side...

Cariboo4x4 · Jun 3, 2018

I hooked up all the lines and started engine with front wheels off the ground and was able to bleed all the air out by actuating the power assist. Thank you for the replies.

Power steering gear pump question

Cariboo4x4

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kevinthefixer

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Tramway Guy

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Cariboo4x4

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