Bobcat 553

[caseyspackman88]

I have a 553 bobcat. Had the hydrostatic pumps rebuilt and replaced the front oil pump with a new one. Ran for 8 hours and started to shutter. The turning joysticks shutter and then it will kill the engine. Removed the pump and sent back due to it not working properly. Repair shop stated it is in perfect condition. Got it back installed it again and it is doing the exact same issue. All lines have been flushed and bled of air as well as new hydraulic filter. Anyone have some ideas or opinions would be great.

 

[caseyspackman88]

Here is another video after it went to the rebuild shop for the warranty work

 

[mikluha]

charging oil pressure too high