Limiting Hydraulic Oil Flow When Using Auxiliary Valves
Usage:
BACKHOE LOADERS416B (8SG1-Up),
426B (5YJ1-Up),
428B (7EJ1-Up),
436B (6MJ1-Up),
438B (3KK1-Up),
416C (5YN1-Up, 1XR1-Up, 1BR1-Up, 1LR1-Up),
426C (7WN1-Up, 1ZR1-Up, 1ER1-Up, 1NR1-Up),
428C (8RN1-Up, 2CR1-Up, 1HR1-Up, 1SR1-Up),
436C (9JN1-Up, 2BR1-Up, 1GR1-Up, 1RR1-Up),
438C (9KN1-Up, 2DR1-Up, 1JR1-Up, 1TR1-Up)
426B (5YJ1-Up),
428B (7EJ1-Up),
436B (6MJ1-Up),
438B (3KK1-Up),
416C (5YN1-Up, 1XR1-Up, 1BR1-Up, 1LR1-Up),
426C (7WN1-Up, 1ZR1-Up, 1ER1-Up, 1NR1-Up),
428C (8RN1-Up, 2CR1-Up, 1HR1-Up, 1SR1-Up),
436C (9JN1-Up, 2BR1-Up, 1GR1-Up, 1RR1-Up),
438C (9KN1-Up, 2DR1-Up, 1JR1-Up, 1TR1-Up)
Problem:
Many attachment suppliers require the hydraulic oil flow to the attachments to be limited when using the auxiliary hydraulic control valves.
Solution:
Flow through this valve can be increased or decreased by removing or adding one or more of the 6E131 shims between the retainers of the control valve centering spring. Remove the cover under the "E" stick section. Then remove the screw compressing the centering spring and retainers. The shims go between the retainers.
Use the chart below to obtain the flow required:
BHL SERVICE ENGINEERING LEICESTER COPYRIGHT 1996 CATERPILLAR ALL RIGHTS RESERVED
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