Hitachi ZX27U-2, Operator'S Manual

Page: 194 / 230

MAINTENANCE
7-74
TILTING FLOOR DOWN
WARNING: Don’t quickly lower the floor. If the
adjust screw (4) is quickly turned to lower the
floor, the floor may severely vibrate, potentially
creating hazardous conditions.
1. Before tilting the cab floor down, check if any tools or
workshop towels are not left behind on the base ma-
chine or in the operator’s cab, and the fall prevention
bar has been stowed in position. When detaching fall
prevention bar (1), tilt the fall prevention bar in the
arrowed reverse direction while picking up lock
stopper (2).
2. Slowly turn adjuster screw (4) counterclockwise.
Wrench size: 17 mm
3. Continue to turn adjuster screw (4) counterclockwise
until the edge of bracket (13) comes in contact with
bearing bracket (7).
WARNING: If adjuster screw (4) is continuously
turned after the floor is completely lowered, when
the adjuster screw is extended by approx. 15 mm
(0.6 in), washer (10) will come in contact with the
end face of pin (11) so that adjuster screw (4) will
not turn further. Take care that if adjuster screw
(4) is forcibly turned further, deformation of
washer (10) or missing of bolt (12) may result.
4. When the floor is completely lowered, adjuster screw
(4) will be extended. Adjust the clearance between
flange (8) of adjuster screw (4) and contact face (9) to
2 to 5 mm (0.1 to 0.2 in).
M1M7-07-082
M1M7-07-068
W1M9-01-05-002
M1M7-07-075
8
9
7
4
2 to 5 mm (0.1 to 0.2 in)
12
11 10
13
4
9
8
2 to 5 mm (0.1 to 0.2 in)
1
2