Hitachi zaxis 50u 2 excavator service repair manual

Page 63

GENERAL / Floor-Tilting Device PROCEDURE FOR FLOOR TILTING DOWN CAUTION: Do not lower the floor abruptly. If adjuster screw (5) is rotated abruptly in lowering the floor, the floor trembles enormously, which is dangerous. 1. Slowly turn adjuster screw (5) anticlockwise. : 17 mm

8 9

2. Turn adjuster screw (5) counterclockwise until the farthest end contacts receiver seat (7).

7

CAUTION: After the floor has been lowered completely, if adjuster screw (5) is kept turned, it will not be turned any longer when unscrewed by about 15 mm because washer (10) touches pin (11). Be careful not to turn adjuster screw (5) further because washer (10) deforms and gets damaged, causing fall of bolt (12). 3. When the floor has been lowered completely, adjuster screw (5) is drawn. Make adjustment so that the clearance between collar (8) of adjuster screw (5) and contact face (9) becomes 2 to 5 mm.

W1-5-4

5 10

M1M7-07-068

11

12

W1M9-01-05-002


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