Komatsu Galeo PC800-8 Shop Manual page 1066

SEN01058-00
Removal and installation of
bucket assembly
Loading shovel
Removal
k
Set the bottom of the bucket horizontal,
lower the work equipment completely to the
ground and stop the engine. Operate the
control levers several times to release the
remaining pressure in the hydraulic piping.
k
Loosen the oil filler cap slowly to release
the pressure inside the hydraulic tank.
a Fit plugs in the hoses after disconnecting
them, to prevent dirt or dust from entering.
1. Sling bucket cylinder assembly, and remove
plate, then using forcing screws (Thread dia. =
16 mm, Pitch = 2.0 mm), pull out pin (1).
a Remove the pin on the other side in the
same way.
2. Start the engine and retract the piston rod fully.
k
Bind the piston rod with wires, etc., to
prevent it from coming out.
4
Pin: 37 kg
k
After stopping the engine, release the resid-
ual pressure in the piping. For details, see
Testing and adjusting, "Releasing residual
pressure in PPC valve hydraulic circuit".
3. Disconnect bottom dump cylinder hose (2).
16
4. Sling bucket assembly, and remove 3 mount-
ing bolts, then using forcing screws (Thread
1
dia. = 16 mm, Pitch = 2.0 mm), pull out pin (4).
a Remove the pin on the other side in the
same way.
4
Pin: 55 kg
[*1]
5. Lift off bucket assembly (5).
4
Bucket assembly: 6,800 kg
Installation
Carry out installation in the reverse order to
q
removal.
[*1] [*2]
k
When aligning the mounting position of the
pin, do not insert your fingers in the pin hole.
a Bleed the air from the work equipment circuit.
For details, see Testing and adjusting, "Bleed-
ing air from hydraulic cylinder".
After completion of the air bleeding operation,
add engine oil to the hydraulic tank to the
specified level.
50 Disassembly and assembly
PC800, 850-8
[*2]