Case1835b issue

[JD9]

Purchased at auction an old 1835b as is. Gas engine runs good(not sure of brand).Travels good however when raising arms it is slow and bucket dumps. One hydraulic line leaks pretty bad but if hydraulic fluid is full would this still happen? Not sure where to start to repair this unit. Thanks

 

[Tyler d4c]

Fix the leak then check flow and pressure coming from the pump with a flow meter