Hitachi EX20UR-2 Manual page 71

W562-02-04-002
3. Install drain plug (2) on the bottom of hydraulic oil
tank.
*...4,:
24 mm
r—aw : 206 N-rn ( 21 kgf-m, 152 lbf-ft )
Fill hydraulic oil to the specified level into the hy-
draulic oil tank.
Hydraulic oil:
EX3OUR-2: 42 L ( 11.1 US gal )
EX4OUR-2: 46 L ( 12.2 US gal )
5. Loosen mounting bolts (2) (4 used) to remove con-
trol valve (1).
limiCo : 17 mm
A
CAUTION: Approximate weight of the control
valves are:
EX3OUR-2: 27 kg ( 60 lb )
EX4OUR-2: 35 kg ( 77 lb )
CpwasiG : 19
r
.--, E s : 29
mm
N•m ( 3 kgf-m, 22 lbf-ft )
Install Control Valve (EX3OUR-2, EX4OUR-2)
1. Install control valve (1) using bolts (2) (4 used).
ffsaC, : 17 mm
r
--./24 : 49 I\l-m ( 5 kgf-m, 36 lbf•ft )
W562-02-04-004
2. Connect the rods and cables to the travel and
blade spools using the pins and cutter pins.
Connect all hoses to the control valve.
mfr
: 22 mm
1—enii : 39 14-m ( 4 kgf-m, 29 lbf-ft )
oipmiC, : 27 mm
r
: 93 Nl-rn ( 9.5 kgf-m, 69 lbf-ft )
=t
W562-02-04-003
UPPERSTRUCTURE / Control Valve
a
W562-02-04-004
W02-04-06