LEVER AS-THROTTLE 9Y1296 - Caterpillar

Illustration 1 g02727582
(1) Lube pump
(3) Transmission oil filter
Illustration 2 g03787899
Illustration is shown with hydrostatic motor clutch (8) enabled
(1) Lube pump
(2) Pump pressure
(3) Filter
(4) Main relief pressure
(5) Transmission lubrication pressure
(6) Hydrostatic motor clutch proportional solenoid
(7) Hydrostatic motor clutch pressure
(8) Hydrostatic motor clutch
Illustration 3 g03793562
(A) LCD display - Transmission oil filter bypass indicator displays here if bypassing The lube pump (1) provides lube oil for the transmission and oil pressure for the hydrostatic motor clutch (8) in the transmission. Transmission lubrication oil is separate from other machine hydraulic systems. The lube pump provides oil to the transmission oil filter (3). A bypass valve at filter (3) will open if the filter becomes plugged or if the transmission oil is cold. Refer to Systems Operation, "Oil Filter (Hydraulic)" for more information concerning the transmission oil filter. When the transmission oil filter (3) is bypassed, a bypass switch closes. When the bypass switch closes, the ECM sends a signal to the instrument cluster to turn on a notification indicator on the LCD display. The bypass indicator appears as the filter approaches a bypass condition.