1956 620 leaking hydraulic oil into engine.

RyanStotz · Mar 28, 2018

After filling up the 620 with hydraulic oil and running for only half an hr I rechecked oil levels and noticed that the hydraulic oil was low and the engine was overfilled with oil. What Would be causing this and how do I go about fixing it. Any help would be great. Ive seen posts about engine oil going into transmission but not the other way around. Thanks

coshoo · Mar 29, 2018

With my 420, it was the power steering pump. Look at a parts diagram, and look for O rings that might be bad.

Tx Jim · Mar 29, 2018

Hyd pump seal could have failed.

RyanStotz · Mar 29, 2018

(quoted from post at 01:16:25 03/29/18) With my 420, it was the power steering pump. Look at a parts diagram, and look for O rings that might be bad.

Thanks. I have the diagram. Havent thought to check there. I will follow up with what I find. Thanks

Cliff Nelson · Mar 29, 2018

620 would have to be hydraulic pump seals. Power steering is isolated from the hydraulics system on the waterloo tractors.

RyanStotz · Mar 29, 2018

Thank you. I will check and repost with what I find.

PJH · Mar 29, 2018

There is a good service manual for the 620 hydraulics - SM2022

RyanStotz · Mar 31, 2018

(quoted from post at 07:54:13 03/29/18) There is a good service manual for the 620 hydraulics - SM2022

Found that manual and have it ordered. Thanks

1956 620 leaking hydraulic oil into engine.

RyanStotz

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coshoo

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Tx Jim

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RyanStotz

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Cliff Nelson

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PJH

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