CYL GP- 1024210 - Caterpillar

Illustration 1 g03432143
Hydraulic Hammer (typical example)
Illustration 2 g03432146
(1) Seal carrier (2) Valve body (3) Plug (4) Plug (5) Plug (6) Accumulator (7) Bushing housing (8) Distributor stem (9) Piston (10) Sleeve (11) Piston sleeve (12) Front head (13) Tool retaining pin (14) Upper bushing (15) Lower bushing
Illustration 3 g03432176
(2) Valve body (5) Plug (16) Opening for accumulator (17) Grease fitting (18) PlugThe Hydraulic Hammer provides energy for impact through a system of valves in order to break materials. The valves coordinate the motion of a piston which strikes the tool bit of the hammer, transferring energy in order to break materials.Hydraulic power is supplied by the auxiliary hydraulic system of the host machine. Refer to the Service Manual, "Hydraulic Oil Flow - Test" for the operating parameters of the auxiliary circuit. The auxiliary hydraulic system supplies the flow and the pressure to valve body group (2) of the hammer through the connecting lines.The sizes of the passages within valve body group (2) regulates the operating pressure of the hammer to a preset pressure. Valve body group (2) regulates the charging circuit of the accumulator. Regulation allows for the optimum accumulator pressure to be attained before the hammer starts a down stroke of piston (9) . Once the correct pressure in the hammer is reached, accumulator (6) will allow fluid to the top of piston (9) to be cycled to the return port. This action will initiate an upward stroke of piston (9) . The operating cycle will begin. The alignment of piston (9) is maintained by piston sleeve (11) and seal carrier (1) .Proper alignment of the tool is maintained by upper bushing assembly (14) and lower bushing assembly (15) . Proper alignment is critical in preventing damage to the hammer. Refer to Service Manual, "Tool Bushing (Lower)" for information regarding wear limits. Refer to Service Manual, "Hydraulic Hammer" for information regarding wear limits. The tool is positioned within the hammer for impact by piston sleeve (11) to ensure that each impact is properly timed.The automatic shutoff operation occurs when the tool bit is not in contact with the material that is being broken. This condition prevents the tool from being fully engaged with piston sleeve (11) which causes piston (9) to be in a position that is lower than the standard position.