Fluid Pump: Service and Repair

ATF pump and pump replacement parts must comply with the transmission code.





1 Piston ring
^ Check that it is correctly located
^ Fig. 1
^ Installing refer to Fig. 2
2 Piston ring
^ Check that it is correctly located =>Fig. 1
^ Installing refer to Fig. 2
3 Piston ring
^ Check that it is correctly located =>Fig. 1
^ Installing refer to Fig. 2
4 Thrust washer
5 Piston
^ Sealing lips are vulcanized to the piston
^ Moisten sealing lips with ATF before inserting
^ Turn piston slightly when installing
6 Bolt, tightening torque 10 Nm (7 ft. lbs.)
^ Then turn 45° further
7 Stator support
8 Outer gear
^ Manufacturer's marking -arrow faces stator support
^ If outer gear is incorrectly installed, the ATF pump may not operate freely in the installed position
9 Inner gear
^ Larger groove faces stator support
10 Housing for ATF pump
11 O-ring
^ Always replace
12 Torque converter oil seal





Fig. 1 Piston rings, checking correct location
^ Be sure that ends of piston rings are hooked together.





Fig. 2 Piston ring, installing/hooking ends together
^ Place piston ring in groove.
^ To hook ends together press sides of ring in and guide ends over one another.
^ Do not twist piston ring out of groove on one side.