Komatsu PC 160-7 slow hydraulics

mercredi 12 août 2015

I have a 2004 komatsu pc 160-7 over the summer my hydraulics have gotten really slow most noticeable is boom up while using any other control in combo . I need to eliminate all possible problems before i spend the money for a new pump . any help is appreciated. Also I need a service manual for this machine could someone point me in the right direction . Thanks