SHAFT 5D4864 - Caterpillar

Improved Valve Stems Increase Response Of Hydraulic Motor And Cylinder Movement When Operating The Equipment Control Lever
Slow response is caused by the air that is accumulated in the top chamber of the control stem. To improve response time, the air should be purged away from the chamber. A slot has been added to the outer surface of the stem so that the oil flow purges away the air.
New Springs Improve Operating Force Of The Equipment Control Lever Pilot Valve And The Attachment Pedal Control Valve
The operator effort required to move the equipment control lever is too high or too low. The options for increasing or decreasing the lever force are noted as follows:
New Springs In The Equipment Control Lever Pilot