ATF pump, disassembling and assembling: Notes

Replacement ATF pump parts and the ATF pump are allocated according to the transmission code.

1 - Piston ring 

• Check that it is correctly located. See Checking that the piston rings are correctly located 
• Installing. See Installing and hooking ends of piston ring together 

2 - Piston ring 

• Check that it is correctly located. See Checking that the piston rings are correctly located 
• Installing. See Installing and hooking ends of piston ring together 

3 - Piston ring 

• Check that it is correctly located. See Checking that the piston rings are correctly located 
• Installing. See Installing and hooking ends of piston ring together 

4 - Thrust washer 

5 - Piston 

• Sealing lips are vulcanized to piston
• Moisten sealing lips with ATF before inserting
• Turn piston slightly when installing

6 - Bolt 

• 10 Nm then turn 45 ° further

7 - Stator support 

8 - Outer gear 

• Manufacturer's marking (arrow) faces stator support
• If outer gear is incorrectly installed, ATF pump may not operate freely in 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 

• Removing and installing. Refer to Torque converter oil seal, removing and installing