4.
Clean the surface around hydraulic tank to
prevent intrusion of foreign matter.
5.
Remove breather cap (2) on the upper surface
of hydraulic tank and release pressure from
hydraulic tank by pressing valve (A) several (5
to 7) times.
6.
Loosen 6 mounting bolts (3) of tank upper
cover, remove cover (4).
7.
Drain the hydraulic oil into container using oil
pump.
8.
Place container for drain oil under drain plug
(1) of the hydraulic tank bottom.
9.
Loosen drain plug (1) on the bottom of
hydraulic tank slowly and drain hydraulic oil
completely.
10.
Clean drain plug (1) and install it in place.
Tightening torque: 98 to 118 N-m (72 to 87
lbf-ft)
11.
Fill hydraulic tank with hydraulic oil through filler
port.
Fill with hydraulic oil watching the level gauge
(5) for oil level.
12.
Attach filler port cover (4) with 6 bolts (3).
Tightening torque: 41.9 to 51.1 N-m (30.9 to
37.7 lbf-ft)
13.
Start engine and operate it by low idling for
several (5 to 7) minutes. Operate each cylinders
and swing, and then return the machine to the
hydraulic level checking position. Stop the
engine and check the oil level, if the level is
low, make up the oil.
-Do not drop bolt or others into the tank during the work.
-Dispose of all hazardous waste in accordance with government environmental regulations.
［
4. MAINTENANCE
］
4-78
Copyright © 2015 Kobelco Construction Machinery Co.,Ltd. All rights reserved. [S2YF00022ZE01] [0731CsCshWbYs]
