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Dark Gray - Cutaway section
Light Gray - Surface color
Red - High pressure oil
Red/White Stripes - 1st pressure reduction
Red Crosshatch - 2nd reduction in pressure
Pink - 3rd reduction in pressure
Red/Pink Stripes - Secondary source oi l pressure
Orange - Pilot, charge, or Torque Converter oil
Orange / White Stripes -
Reduced pi lot, charge, or TC oil pressure
Green - Tank, sump, or return oi l Blue - Trapped oil
Brown - Lubricating oil
Purple - Pneumatic pressure
Orange Crosshatch - 2nd reduction inpilot , charge, or TC oil
pressure.
White - Atmosphere or
Air (No pressure)
Yellow - Moving or activated components
Cat Yellow - (Restricted usage)
Identification of components
within a moving group
Black - Mechanical connection. Seal
Green / White Stripes -
Scavenge Oil or Hydraulic Void
HYDRAULIC SCHEMATIC COLOR CODE
