302.5C Mini Hydraulic Excavator Hydraulic System Caterpillar


Implements and Swing Controls Alternate Patterns

Usage:

302.5C GBB

Two-Way Valve

------ WARNING! ------

WHENEVER A CHANGE IS MADE TO THE MACHINES CONTROL PATTERN ALSO EXCHANGE THE PATTERN CARD IN THE CAB TO MATCH THE NEW PATTERN. FOLLOW THE CORRECT PROCEDURE IN THE OPERATOR AND MAINTENANCE MANUAL.

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Illustration 1g01176731

The joystick control selector is located under the cab floor mat.

(1) Lever

(2) Valve




Illustration 2g01176792

The machine control pattern can easily be changed to the SAE system (3) or to the standard backhoe loader hydraulic system (BHL) (4) by changing the position of the two-way valve.




Illustration 3g00840184

(1) Stick cylinder

(2) Boom cylinder

(3) Boom control valve

(4) Joystick control selector

(5) Stick control valve

(A) Standard position (SAE)

(B) Alternate position (standard backhoe loader hydraulic system (BHL))

(R1, R3) Pilot line from right side of pilot control valve (joystick)

(L1, L3) Pilot line from left side of pilot control valve (joystick)




Illustration 4g00842464

The patterns on the left side of Illustration 4 show the possible configurations for the left control lever. The patterns on the right side of the illustration show the possible configurations for the right control lever.


Stick Out (1) - Move the control lever to this position in order to move the stick outward.


Swing Right (2) - Move the control lever to this position in order to swing the upper structure to the right.


Stick In (3) - Move the control lever to this position in order to move the stick inward.


Swing Left (4) - Move the control lever to this position in order to swing the upper structure to the left.


Boom Lower (5) - Move the control lever to this position in order to lower the boom.


Bucket Dump (6) - Move the control lever to this position in order to dump the bucket.


Boom Raise (7) - Move the control lever to this position in order to raise the boom.


Bucket Close (8) - Move the control lever to this position in order to close the bucket.

HOLD (9) - When the control lever is released from any position, the control lever will return to the HOLD position. Movement of the upper structure will stop.

Two functions may be performed at the same time by moving a control lever diagonally.

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