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PDF HYDRAULIC HAMMERS SERVICE MANUAL

HYDRAULIC HAMMERS SERVICE MANUAL.The main valve (Figure 1) for the hammer is built into the cylinder. Hydraulic oil is supplied into the hammer through this valve. During the upward stroke, the pressure in the upper chamber is released via the main valve and through the outlet. High pressure in the lower chamber then forces the piston upward. As soon as the piston reaches the upper end of the stroke, the main valve directs flow to the upper chamber causing it to become high pressure.
Since surface A is greater than surface B, the piston is driven downward with the help of the accumulated energy from the gas chamber, creating the impact stroke of the hammer. At the point of impact, the main valve shifts, releasing the high pressure from the upper chamber, enabling the upward stroke to occur again. All hammers are mounted to hammer brackets, which are then mounted to an adapter plate using two pins. The adapter plate is mounted to the quick mount of the carrier. To remove the hammer, first disconnect the hydraulic couplers from the inlet and outlet ports and detach the quick mount. Seal off all plugs and hoses to prevent dust, dirt and foreign particles from entering the system.All hammers are mounted to hammer brackets. The hammer brackets are mounted to the stick of the carrier using two pins. To remove the hammer, first disconnect the hydraulic couplers from the inlet and outlet ports. Seal the couplers and hoses to prevent dust, dirt, and foreign particles from entering the system. Remove the “mounting pins” to detach hammer and bracket from the carrier stick.Operation of hydraulic hammers under water requires proper preparation to prevent internal damage to hammer parts and carrier hydraulic system.


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