Has an air pressure driven piston pump mounted on the HAMMAR which supplies all grease points on the cranes as well as on the trailer. Gives exact dosage and distribution of the lube with adjustable intervals. The grease reservoir is made from stainless steel and has a visual monitoring of the grease level. The system is controlled from a user interface mounted on the trailer. The control unit has LED-lights and surveys the pump function, the grease level in the reservoir and also has pressure alarm and low level alarm on lubricant level etc.. At power brakes (e.g. disconnecting the trailer) the lubrication program will always continue from previous point through memory storage.