Hydraulic oil in engine

tractorguy2 · Jan 24, 2017

Working on a 300 for a guy. Today I found out the hydraulic reservoir is empty and the engine is way over full. The engine oil is very thin. I'm sure it's hydraulic oil. I assume seal in hydraulic pump is bad.

What type of seals are in the pump?

Are the seals hard to change?

BarnyardEngineering · Jan 25, 2017

They're just standard seals. Should be able to cross reference them at any good seal shop. Don't think you can get them at a dealer, because the pumps are throw-away, not rebuildable.

What you're most likely going to find is that the shaft where the seal rides has worn a groove and a new seal will not hold for long. In that case you may need a special seal and "Speedi-sleeve" if such a thing exists for that application.

Otherwise, the pump is scrap metal and the only recourse is a new $900 pump.

Janicholson · Jan 25, 2017

The sleeves do exist for the shaft. Jim

ND856 · Jan 31, 2017

Sleeves do exist, & seals are available from CIH. At least for a 400.

Hydraulic oil in engine

tractorguy2

Well-known Member

BarnyardEngineering

Well-known Member

Janicholson

Well-known Member

ND856

Member

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