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7-33
1. REMOVAL AND INSTALL OF MOTOR
REMOVAL
Lower the work equipment to the ground
and stop the engine.
Operate the control levers and pedals
several times to release the remaining
pressure in the hydraulic piping.
Loosen the breather slowly to release the
pressure inside the hydraulic tank.
Escaping fluid under pressure can
penetrate the skin causing serious injury.
When pipes and hoses are disconnected,
the oil inside the piping will flow out, so
catch it in oil pan.
Disconnect hydraulic hose.
Disconnect pilot line hoses.
Sling the control valve assembly and
remove the control valve mounting bolt.
Â
Weight : 25kg(55lb)
Remove the control valve assembly.
When removing the control valve
assembly, check that all the piping have
been disconnected.
I
I
NSTALL
Carry out installation in the reverse order
to removal.
Bleed the air from below items.
Cylinder(Boom, arm, bucket)
Swing motor
Travel motor
See each item removal and install.
Confirm the hydraulic oil level and recheck
the hydraulic oil leak or not.
GROUP 4 MAIN CONTROL VALVE
A9
B10
A5
A2
A10
B2
A4
B5
B8
H
J
F
G
D
E
A
B
Pa5
Pa3
Pa10
Pb3
Pb10
Pb5
Pb8
Pa8
Pb6
Pa6
Pb7
Pa7
Arm
Ground
Pb8'
Pb5
Pb8
Pa8
A
Boom
Up
A
1)
(1)
(2)
(3)
ö
(4)
(5)
(6)
(7)
2)
(1)
(2)
Η
Θ
Ι
ö
(3)
13031GE18
R35Z77MCV01
R35Z77MCV02
R35Z77MCV03