Komatsu PC220-7 low power,shaking pilot control how to repair

In this video of komatsu pc 220-7,we will show all at my simple way on how to fix, the main reason of low power and shaking pilot control lever, keep on watching pls. like share and subscribe my 1.,KOMATSU PC400-8 SERVICE MENU SECRET CODE TO ACCESS, MONITORING ERROR, HYD. PUMP PRESSURE, AND MORE. 2.,MAIN RELIEF VALVE, KOMATSU PC220-400/7&8 REPAIRING CAUSE OF VIBRATION OR SHAKING OF PILOT LEVER. 3.,KOMATSU PC 220/228-6/7 PC & LS PROBLEM ENGINE ITS OVERLOAD OR ALMOST STOP WHILE WORKING. 4.,KOMATSU PC400-7 TUTORIAL HOW TO CUTOUT THE INJECTOR SIMPLE PROCEDURE.