This instruction show you guide on how to remove main controller for HITACHI ZX890-7 excavator.
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Procedures:
1.Set the machine position for inspection and maintenance.
2 IMPORTANT
Set the key switch to the OFF position. Wait 5 minute or longer, and then set battery disconnect switch to the OFF position.
Set the battery disconnect switch to the OFF position.
3.Open door (1).
4.Fold seat (2). Slide seat (2) to the front end.
5.Remove caps (3) (4 used).
6.Remove cover (4).
7.Remove screw (5), screws, washer (6), bolts (15), and washers (16). Remove the cover (14) assembly.
13 mm
8.Remove screws, washers (8) (2 used) and bolts, washer (10).
9.Disconnect connector (17) and connectors (18) (2 used). Remove cover (9).
10.Remove screws, washers (7) (2 used), bolts (12) (2 used), and washers (13) (2 used). Remove the cover (11) assembly. At this time, duct (20) is also removed at the same time.
13 mm
11.Disconnect connectors (24) (6 used).
12.Remove bolts, washers (22) (4 used). Remove the MC (23) assembly.
13.Remove screws, washers (25) (4 used). Remove MC (23) from brackets (21) (2 used)
More repair cases for Hitachi excavator,please refer to:Hitachi Excavator Trouble Repair.
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