RAMMER 255E, Operator'S Manual

Page: 34 / 68

COPYRIGHT © 2020 SANDVIK MINING AND CONSTRUCTION OY Page 34 - Operation
Operation 255E
5.3 MOUNTING AND DISMOUNTING THE HAMMER
REMOVAL FROM CARRIER
Warning! The hammer must be secured from rolling over when disconnecting
from the carrier. Only use a skilled operator to position the carrier for hammer
removal!
Warning! Hydraulic pressure inside the hammer must always be released
before opening hose connections!
Warning! Hot hydraulic fluid can cause severe injuries!
1. Position hammer horizontally on the floor. If the hammer is going to service,
remove the tool.
2. Stop the carrier engine. Operate boom and hammer controls to release pressure
trapped inside hoses. Wait ten minutes for oil pressure to drop.
3. Close hammer inlet and outlet lines. If quick couplers are used, disconnection
automatically closes hammer lines. If hammer line includes ball valves, please
make sure that they are closed.
4. Disconnect hoses. NOTICE! Protect environment from oil spills . Plug the
hoses and the hammer inlet and outlet ports to keep dirt out from hydraulic
circuit.
5. Remove bucket pins and other parts.
6. The carrier can be moved aside.
INSTALLATION
1. Install hammer in the same manner as mounting a bucket. Install bucket pins.
2. Connect hoses. Hammer inlet port is marked with "IN" and outlet port with
"OUT". In the installation inspection certain specifications (such as operating
pressure and oil flow) are checked so that they are within given limits. See
“Hammer specifications” on page 60.
3. Open hammer inlet and outlet lines.