DISTRIBUTION AR 3966817 - Caterpillar

Illustration 1 g01861138 (AA) Black ... Mechanical connection or seal (BB) Dark Gray ... Cutaway section (CC) Light Gray ... Surface of the part (DD) White ... Atmosphere or air (no pressure) (EE) Purple ... Pneumatic pressure (FF) Yellow ... Moving parts or activated components (GG) Green ... Tank oil, suction oil, return oil, and case drain oil (HH) Brown ... Lubricating oil (JJ) Green Stripes and White Stripes ... Scavenge or suction oil (KK) Red ... High pressure oil (LL) Red Stripes and White Stripes ... Signal (First pressure reduction) (MM) Red Crosshatch ... Signal (Second pressure reduction) (NN) Pink ... Signal (Third pressure reduction) (PP) Red and Pink Stripes ... Secondary source of oil pressure (RR) Orange ... Pilot, charge, or torque converter oil (SS) Orange Stripes and White Stripes ... Reduced pilot, charge, or torque converter oil (TT) Orange Crosshatch ... Second reduction in pilot, charge, or torque converter oil (UU) Blue ... Trapped oil