THEORY OF OPERATION - CONTINUED
POWERTRAIN - CONTINUED
Transmission Oil Pump.
Transmission oil pump is mounted on left side of torque converter housing under cab.
Transmission oil pump is a positive displacement type, one-section gear pump bolted to torque converter
housing. These pumps are mounted on and driven by transmission oil pump: steering pump, implement
pump, and pilot/brake pump.
Pump drive gear is fastened to torque converter impeller and drives transmission and hydraulic pump drive
gear. Transmission and hydraulic pump drive gear is fastened to pump drive flange. Pump drive flange is
connected to transmission oil pump by splines. Splined shaft of transmission oil pump drives transmission
Transmission oil pump main components are: cover assembly, body assembly, manifold assembly, drive
gear, and gear.