Hitachi EX20UR-2 Manual page 224

14. heck the hose connections for oil leaks.
: 8 mm
r
--mm : 64 N-rn ( 6.5 kgf-m, 47 lbf-ft )
IMPORTANT: After completing the work, remove
air bleed plug (1) from the top of the
main pump. Fill the pump with hy-
draulic oil. Lightly tighten plug (1).
Run the engine at slow idle until hy-
draulic oil is seeping out from the
plug clearance. Stop the engine.
Tighten plug (1) to specification.
W563-02-03-003
15. Install drain plug (2) at the bottom of hydraulic oil
tank (1).
*INNHG:
24 mm
1.---4•4: 206 N-m ( 21 kgf-m, 152 lbf-ft )
Add hydraulic oil into the tank.
Hydraulic Oil: EX3OUR-2: 42 L ( 11.1 US gal )
EX4OUR-2: 46 L ( 12.2 US gal )
Install the cover onto the hydraulic oil tank using
the screws.
•
••11101
W562-02-04-002
9. Connect center joint upperside cover (1) using bolts
(2) (6 used) (7 used for EX4OUR-2).
: 10 mm
r
--4.24: 10 N-m ( 1 kgf-m, 7.2 lbf-ft )
*
•C•
: 13 mm
F
: 20 N-rn ( 2 kgf-m, 15 lbf-ft )
Ipo dC#
: 17 mm
: 49 N-rn ( 5 kgf-m, 36 lbf-ft )
W562-02-05-001
UNDERCARRIAGE /
Center Joint
W03-03-18