HYDRAULIC SCHEMATIC COLOR CODE

HYDRAULIC SCHEMATIC COLOR CODE

Black - Mechanical Connection. Seal Red - High Pressure Oil

Dark Gray - Cutaway Section

Light Gray - Surface Color Red / White Stripes - 1st Pressure Reduction

Red Crosshatch - 2nd Reduction in Pressure

White - Atmosphere or Air (No Pressure)

Purple - Pneumatic Pressure

Yellow - Moving or Activated Components

Cat Yellow - (Restricted Usage) Identification of Components within a Moving Group Brown - Lubricating Oil

Green - Tank, Sump, or Return Oil

Green / White Stripes Scavenge / Suction Oil or Hydraulic Void Pink - 3rd Reduction in Pressure

Red / Pink Stripes - Secondary Source Oil Pressure

Orange - Pilot, Charge or Torque Converter Oil

Orange / White Stripes - Reduced Pilot, Charge, or TC Oil Pressure

Orange / Crosshatch - 2nd Reduction in Pilot, Charge, or TC Oil Pressure

Blue - Trapped Oil

HYDRAULIC SCHEMATIC COLOR CODE

This illustration identifies the meanings of the colors used in the hydraulic schematics and cross-sectional views shown throughout this presentation.

Red - High Pressure Oil

Black - Mechanical Connection. Seal Red / White Stripes - 1st Pressure Reduction Red Crosshatch - 2nd Reduction in Pressure

Dark Gray - Cutaway Section Light Gray - Surface Color Pink - 3rd Reduction in Pressure Red / Pink Stripes - Secondary Source Oil Pressure Orange - Pilot, Charge or Torque Converter Oil Orange / White Stripes - Reduced Pilot, Charge, or TC Oil Pressure Orange / Crosshatch - 2nd Reduction in Pilot, Charge, or TC Oil Pressure Blue - Trapped Oil

White - Atmosphere or Air (No Pressure) Purple - Pneumatic Pressure Yellow - Moving or Activated Components Cat Yellow - (Restricted Usage) Identification of Components within a Moving Group Brown - Lubricating Oil Green - Tank, Sump, or Return Oil Green / White Stripes - Scavenge / Suction Oil or Hydraulic Void