973D Track-Type Loader Hydraulic System Bucket Control Caterpillar


Bucket Control
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973D Track-Type Loader Hydraulic System [KENR6528]
IMPLEMENTS
CONTROL GP
973D Track-Type Loader Hydraulic System Bucket Control
973D Track-Type Loader Hydraulic System Bucket Control Group
1.1. Tilt Kickout
2.1. Lift Kickout



Illustration 1g01929733

Bucket Control

(1) Bucket

(2) Link

(3) Lever

(4) Lift arm assembly

(5) Tilt cylinder (two)

(6) Lift cylinders (two)

The bucket control provides a way to control the operation of bucket (1) .

The group is made up of the following components: two lift cylinders (6), two tilt cylinders (5), lift arm assembly (4), lever (3) and link (2) .

The placement of link (2) in the lift arm assembly is called the z-bar linkage. The Z is formed by the following components: tilt cylinder (5), lever (3) and link (2) .

The following components are fastened to the loader frame by pins: tilt cylinders (5), lift cylinders (6) and lift arm assembly (4) .

When pressure oil is sent to the head end of lift cylinders (6), lift arm assembly (4) is raised. When pressure oil flows to rod end of lift cylinders (5), lift arm assembly (4) is lowered.

The bucket tilts back when pressure oil is sent to the head end of tilt cylinders (5). The bucket dumps when pressure oil flows to the rod end of the tilt cylinders.

Tilt Kickout




Illustration 2g01929754

Tilt kickout

(5) Tilt cylinder

(7) Magnet

(8) Sensor

The machine ECM automatically moves the tilt control valve spool to the HOLD position when the bucket gets to the desired tilt angle.

When the rod moves in tilt cylinder (5), magnet (7) travels along sensor (8). Sensor (8) is monitored by the machine ECM. When magnet (7) reaches a specified position on sensor (8) the machine ECM will disengage the tilt kickout. The tilt kickout uses electronic snubbing so that the tilt cylinder will not stop immediately.

Lift Kickout




Illustration 3g01929755

Lift kickout

(6) Lift cylinder

(7) Magnet

(8) Sensor

The machine ECM automatically moves the lift control valve spool to the HOLD position when the bucket gets to the desired lift position.

When the rod moves in lift cylinder (6), magnet (7) travels along sensor (8). Sensor (8) is monitored by the machine ECM. When magnet (7) reaches a specified position on sensor (8) the machine ECM will disengage the lift kickout. The lift kickout uses electronic snubbing so that the lift cylinders will not stop immediately.

Information System:

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