Backhoe Hydraulic pump question.

mrmikey · Oct 10, 2023

Pump uses hydraulic oil. Multiplier might use 80W-90 gear oil.

Ok...the gearbox, I misspoke

Caco4x4 · Oct 11, 2023

Bob Rooks said:
Pump uses hydraulic oil. Multiplier might use 80W-90 gear oil.

How can I tell witch oil they use and how do I fill them?

Bob Rooks · Oct 11, 2023

Caco4x4 said:
How can I tell witch oil they use and how do I fill them?

Remove the vent cap to fill. Make sure the unit is upright (pump on top) when filling and checking the oil level (it should read half way in the sight glass not running). If there is no spec for oil in the manual it would be safe to use the same oil as used in your transmission, probably 80W-90 or 85W-90 gear oil.