966M XE and 972M XE Wheel Loaders Power Train, Steering, Braking, Hydraulic, and Machine Systems Caterpillar

Illustration 1	g03693602
Right side view (1) Hose assembly (variator and clutches supply line) (2) Hose assembly (lube supply line) (3) Full flow filter (4) Kidney loop filter (5) Bypass manifold (cooler and filters) (6) Transmission oil cooler

Engine coolant from the radiator enters one end of transmission oil cooler (6). The coolant flows through the many long tubes that are in the oil cooler. The coolant then exits the oil cooler and continues to engine. The coolant is then cooled by the cooling system of the engine.

Transmission system oil with a high temperature comes from bypass manifold (5). Transmission system oil enters the oil cooler inlet. The flow of oil is around the tubes and along the tubes inside the oil cooler. In this process, heat that is removed from the oil is given to the engine coolant. Once the oil flows through the oil cooler tubes, the oil flows through the bottom outlet with a lower temperature. The components in the transmission are then cooled and lubricated by the oil.

Bypass Manifold

Illustration 2	g03695813
View of bypass manifold from left side of machine (5) Bypass manifold (cooler and filters) (7) Port - return oil (8) Port - oil from kidney loop filter (9) Port - oil to kidney loop filter (10) Port - supply oil (11) Port - oil to cooler (12) Port - oil from cooler

Illustration 3	g03695834
Schematic view of bypass manifold (5) Bypass manifold (cooler and filters) (7) Port - return oil (8) Port - oil from kidney loop filter (9) Port - oil to kidney loop filter (10) Port - supply oil (11) Port - oil to cooler (12) Port - oil from cooler