Colour Coding The following colour coding, used on illustrations to denote various conditions of oil pressure and flow, is standardised throughout JCB Service publications. Red Full Pressure Pressure generated from operation of a service. Depending on application this may be anything between neutral circuit pressure and M.R.V. operating pressure. Pink Pressure Pressure that is above neutral circuit pressure but lower than that denoted by red. Orange Servo Oil pressure used in controlling a device (servo). Blue Neutral Neutral circuit pressure. Green Light Green Exhaust Cavitation Oil subjected to a partial vacuum due to a drop in pressure (cavitation).
Yellow Lock Up Oil trapped within a chamber or line, preventing movement of components (lock up). A390940 9803/3280 Issue 1 Find manuals at http://best-manuals.com/s