CHARGE AND SCAVENGE PUMP PUMPS
10A - 3
CROSS SECTION VIEW OF CHARGE AND SCAVENGE PUMP
1. Short Tie Bolt 6. Section O-Ring 11. Back Up Gasket 16. Gear Key 21. Long Dowel Pin
2. Long Tie Bolt 7. Check Ball 12. Front Diaphragm 17. Front Housing 22. Rear Gear
3. Front Plate 8. Return Spring 13. Thrust Plate 18. Drive Gear/Shaft 23. Rear Housing
4. Retaining Ring 9. Diaphragm Seal 14. Rear Diaphragm 19. Idler Gear/Shaft 24. Back Plate
5. Shaft Oil Seal 10. Protector Gasket 15. Short Dowel Pin 20. Center Housing 25. Retainer Washer
GENERAL
The transmission charge and scavenge pump is a dual element fixed delivery gear type pump located on the right hand
side of the torque converter. The front section of the pump supplies the oil flow for the transmission control valves,
steering control valve and the torque converter. This section draws oil from rear main frame through the suction strainer.
The oil from the outlet side of the pump is directed through the pressure filter and on to the valves. The rear section of
the pump scavenges the excess oil from the transmission through a screen fitting and directs it back to the rear main
frame.
Type .......................................................................... Dual Element Gear
D32E-1, D32P-1, D38E- or D38P-1 Rated Capacity @ 1977 RPM;
Front Section Flow .............................................................. 79 R/min (21 gpm)
Rear Section Flow ............................................................. 106 R/min (28 gpm)
D39E-1 or D39P-1 Rated Capacity @ 1819 RPM;
Front Section Flow .............................................................. 72 R/min (19 gpm)
Rear Section Flow .............................................................. 98 R/min (26 gpm)
Pump Section Bolts ...................................................... 54 to 68 NCm (40 to 50 lbf ft)
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