Check the operation of quick couplings in hammer line. Open hammer line ball
valves if closed.
Swap the pressure and return hoses.
Keep the hammer control valve open and force the tool against an object. The tool
head will push the piston out of its brake area. See “Daily operation” on page 28.
Remove the tool and wipe excessive grease off. See “Manual greasing” on page 44.
When operating the hammer control valve, check that the pressure line pulsates (this
indicates the hammer control valve is opening). If the valve does not operate, check
the operating means: mechanical connections, pilot pressure or electrical control.
Check the installation. Check the relief valve operation. Adjust the relief valve in
hydraulic circuit. Measure the high pressure in the hammer inlet line.
Check the installation. Check the size of the return line.
Check the installation. Check the pump and the other hydraulic components.
The hammer must be serviced in an authorized Rammer service shop.
The hammer must be serviced in an authorized Rammer service shop.
Refer to the correct working methods. See “Daily operation” on page 28.
