TM 5-3805-290-23-1
THEORY OF OPERATION - CONTINUED
0003 00
TRANSMISSION - CONTINUED
6.
Transmission Pump. Transmission pump is bolted to
transmission case and driven by torque converter.
Transmission gear pump is a one-section, positive dis-
placement type pump. Implement pump and steering
pumps are mounted on gear pump and driven by trans-
mission gear pump.
427-B1673
Transmission Oil Cooler. Transmission oil cooler is
7.
located at rear of machine next to hydraulic oil cooler.
Outlet oil from torque converter flows through outlet
relief valve. Oil then flows to bypass valve for trans-
mission oil cooler. When transmission oil is cold,
bypass valve directs oil back to transmission. When
transmission oil becomes warmer, bypass valve directs
oil to transmission oil cooler. Transmission oil cooler
is located behind radiator. As oil flows through cooler,
air flows around core assembly. In this way, heat is
removed from oil. Oil from cooler provides lubrica-
tion and cooling to transmission. Lubrication oil flows
into each transmission shaft. This is done in order to
427-B1543
0003 00-38