Adjust The Bucket Linkage - Hitachi ZAXIS 70 Operator's Manual

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Adjust the Bucket Linkage

The machine is provided with a bucket adjustment system
to take up play in the linkage. When play in the linkage
increases, remove and install shims as follows:
1. Park the machine on a level surface. Lower the
bucket to the ground with the flat side down so that
the bucket will not roll.
2. Run the engine at slow idle. With the bucket on the
ground, slowly swing counterclockwise slightly until
the top of the left bucket boss contacts the arm.
3. Stop the engine. Pull the pilot control shut-off lever to
the LOCK position.
NOTE: Bolt (1) does not need to be removed to remove
shims. Shims are of a split type that can be
easily pushed off with a screwdriver after bolts
(1) have been loosened.
4. Slightly loosen three (M10) bolts (1) using a 8 mm
wrench. Remove all shims (2) from clearance (c)
between plate (3) and bucket.
5. Push and hold bolts (1) to remove all clearance (a)
between arm and boss (4). Holding boss (4) against
arm increases clearance (b). Measure distance (b)
using a feeler gauge. This distance should not be
adjusted below 0.5 mm (0.02 in).
6. Install as many shims (2) into clearance (b) as
possible.
NOTE: Remaining shims (2) must be installed in
clearance (c) to prevent arm end face or bolt
damage.
7. Install remaining shims (2) into clearance (c) and
tighten bolts (1) to 50 N m (5.1 kgf m, 37 lbf ft).
NOTE: The total number of shims (2) used is A.
A : 12 (6 pairs)
8. Replace boss (4) if measurement (d) is 5 mm (0.2 in)
or less.
MAINTENANCE
Bucket
7-67
Clearance
Adjust Part
Arm
Pin
SECTION II
M503-07-056
4
II
Bucket
2
d
3
1
a
c
b
II
M1CD-07-037

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This manual is also suitable for:

Zaxis 70lcZaxis 80sbZaxis 80sblcZaxis 85us

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