first of all check if the hammewr is working in its natueral ryhthem 220- 240 bpm
if less then 220 the belts are slipping tighten them or if worn out change them!
if the belt are ok and the hammer is in the right ryhthem (the check is done when u forge a piece of hard wood and not on idle) check while the hammer is working if u have full recovery means if the day light is acc to the book -i think 91/2'' if very much less and there is no full recovery it means the hammer piston is loosing air on the way up and when it is not going all the way up on the way dowen the hammer is not having full valocity and no power-then check the amount of air that is leacking around the silling collar by putting your hand there --be carefull-- if there is a bIg leakeage u have to repair the silling system and get the right parts from the agent.
this happens when not enough oil is oiling the ram allways more oil is better then less .on the kuhn hammer the oil is been SUPLIED with possitive pump and many times the oil suply to the hammer is lesser do increase the oil amount u have instructions in the book. if all this is ok there are two more things to do 1. on the kuhn the unit is a close box the air is going and coming IN AND OUT through a filter if jamm u have a problam of a insuffitient air coming into the hammer and the out let of air is not free!! cleen the filter.
2 if u take the cover away under the cover there is an adjustable left right rode see if on nutral the marks mech if not adjust it again acc to the book.
there are some more things but it is complicate for me to explain on the mail.
hope i helped u some
HOFI
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