Operation Manual
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performs “Z” shaped reverse tilt. It is characterized by large unloading height, high breakout force and
large bucket up-tilt angle, good lateral movement ability, easy fill-up and little material falling during
lifting. When the boom is lowered directly to the lowest position after unloading at the highest position,
the bucket will be automatically switched to cut-in state.
1.
Bucket
2. Pull rod
3. Rocker arm
4. Boom
Fig. 3-19 Schematic Diagram of Implement
The boom is a single-plate structure, with rear end supported on front frame, front end connected with
the bucket and the middle connected with boom cylinder. When the boom cylinder extends/retracts,
the boom rotates around the axis pin at its rear end to lift or lower the bucket.
The middle of rocker arm is connected with the boom. When the tilt cylinder extends/retracts, the
rocker arm rotates around its middle supporting point to tilt the bucket up or down through the pull rod
linkage. With cooperation with the boom movement and vehicle traveling, various operations can be
completed.
The bucket is a toothed flat bucket. The teeth are bolted to the main cutting edge and can be replaced
in case of wear. If the main cutting edge is excessively worn, the cutter shall be replaced.
The working device has seven articulation points: bucket - boom, bucket - pull rod, pull rod - rocker
arm, rocker arm - boom, boom - frame, boom - cylinder, and rocker arm - cylinder. The fitting clearance
is 0.06-0.22 mm. Wear will occur between the axis pin and bushing during working. If the clearance
exceeds 0.6-0.7 mm, the bushing or axis pin shall be replaced
(ii) Frame
Frame is the base for the connection or installation of all parts and components. It is mainly composed
of front frame and rear frame which is equipped with an oscillating frame (see Fig. 3-20). Front and
rear frames are articulated by articulating axis pin. Front frame is located on front axle with anworking
device arranged on it. Rear frame is connected with rear axle through oscillating frame, on which the
engine, torque converter, transmission, cab and control mechanism are installed. Under the action of
