Transmission Unit

AA80E AUTOMATIC TRANSMISSION / TRANSAXLE: AUTOMATIC TRANSMISSION UNIT: INSPECTION

1. INSPECT NO. 1 BRAKE DISC

(a) Replace all discs if one of the following problems is present: 1) a disc, plate or flange is worn or burnt; 2) the lining of a disc is peeled off or discolored; or 3) grooves or printed numbers have even minimal damage.





NOTICE:
Before assembling new discs, soak them in ATF for at least 2 hours.

2. INSPECT FRONT PLANETARY GEAR ASSEMBLY

(a) Using a feeler gauge, measure the thrust clearance of the front planetary gear pinion.





Standard clearance:

0.2 to 0.6 mm (0.00787 to 0.0236 in.)

If the clearance is not as specified, replace the front planetary gear assembly.

3. INSPECT OVERDRIVE CLUTCH DISC

(a) Replace all discs if one of the following problems is present: 1) a disc, plate or flange is worn or burnt; 2) the lining of a disc is peeled off or discolored; or 3) grooves or printed numbers have even minimal damage.





NOTICE:
Before assembling new discs, soak them in ATF for at least 2 hours.

4. INSPECT REVERSE CLUTCH DISC

(a) Replace all discs if one of the following problems is present: 1) a disc, plate or flange is worn or burnt; 2) the lining of a disc is peeled off or discolored; or 3) grooves or printed numbers have even minimal damage.





NOTICE:
Before assembling new discs, soak them in ATF for at least 2 hours.

5. INSPECT REVERSE CLUTCH RETURN SPRING SUB-ASSEMBLY

(a) Using a vernier caliper, measure the free length of the spring together with the spring seat.





Standard free length:

22.21 mm (0.874 in.)

If the free length is shorter than the standard free length, replace the reverse clutch return spring sub-assembly.

6. INSPECT OVERDRIVE CLUTCH RETURN SPRING SUB-ASSEMBLY

(a) Using a vernier caliper, measure the free length of the spring together with the spring seat.





Standard free length:

21.09 mm (0.830 in.)

If the free length is shorter than the standard free length, replace the overdrive clutch return spring sub-assembly.

7. INSPECT OVERDRIVE DIRECT CLUTCH DRUM SUB-ASSEMBLY

(a) Using a caliper gauge, measure the inside diameter of the overdrive direct clutch drum bush.





Standard inside diameter (Front side):

67.40 to 67.44 mm (2.65354 to 2.65511 in.)

Standard inside diameter (Rear side):

55.62 to 55.64 mm (2.18976 to 2.19054 in.)

If the inside diameter is not as specified, replace the overdrive direct clutch drum sub-assembly.

8. INSPECT FORWARD MULTIPLE CLUTCH DISC

(a) Replace all discs if one of the following problems is present: 1) a disc, plate or flange is worn or burnt; 2) the lining of a disc is peeled off or discolored; or 3) grooves or printed numbers have even minimal damage.





NOTICE:
Before assembling new discs, soak them in ATF for at least 2 hours.

9. INSPECT FORWARD CLUTCH RETURN SPRING SUB-ASSEMBLY

(a) Using a vernier caliper, measure the free length of the spring together with the spring seat.





Standard free length:

20.82 mm (0.820 in.)

If the free length is shorter than the standard free length, replace the forward clutch return spring sub-assembly.

10. INSPECT FORWARD CLUTCH DRUM SUB-ASSEMBLY

(a) Using a caliper gauge, measure the inside diameter of the forward clutch drum bush.





Standard inside diameter:

33.200 to 33.225 mm (1.30708 to 1.30807 in.)

If the inside diameter is not as specified, replace the forward clutch drum sub-assembly.

11. INSPECT SUN GEAR INPUT DRUM SUB-ASSEMBLY

(a) Using a caliper gauge, measure the inside diameter of the sun gear input drum bush.





Standard inside diameter:

45.075 to 45.100 mm (1.77460 to 1.77559 in.)

If the inside diameter is not as specified, replace the sun gear input drum sub-assembly.

12. INSPECT REAR PLANETARY SUN GEAR ASSEMBLY

(a) Using a caliper gauge, measure the inside diameter of the rear planetary sun gear bush.





Standard inside diameter:

28.700 to 28.721 mm (1.12991 to 1.13075 in.)

If the inside diameter is not as specified, replace the rear planetary sun gear assembly.

13. INSPECT REAR PLANETARY GEAR ASSEMBLY

(a) Using a feeler gauge, measure the long and short thrust clearances of the rear planetary gear pinion.





Standard clearance:

0.2 to 0.6 mm (0.00787 to 0.0236 in.)

If the clearance is not as specified, replace the rear planetary gear assembly.

(b) Using a caliper gauge, measure the inside diameter of the rear planetary gear bush.





Standard inside diameter (Front side):

71.60 to 71.63 mm (2.81889 to 2.82007 in.)

Standard inside diameter (Rear side):

28.700 to 28.721 mm (1.12992 to 1.13075 in.)

If the inside diameter is not as specified, replace the rear planetary gear assembly.

14. INSPECT NO. 1 ONE-WAY CLUTCH

(a) Set the one-way clutch onto the rear planetary gear.





(b) Hold the rear planetary gear assembly and turn the one-way clutch.

(c) Check that the one-way clutch turns freely counterclockwise and locks when turned clockwise.

If there is a problem with the No. 1 one-way clutch, replace it.

15. INSPECT NO. 2 BRAKE DISC

(a) Replace all discs if one of the following problems is present: 1) a disc, plate or flange is worn or burnt; 2) the lining of a disc is peeled off or discolored; or 3) grooves or printed numbers have even minimal damage.





NOTICE:
Before assembling new discs, soak them in ATF for at least 2 hours.

16. INSPECT NO. 2 CLUTCH DISC

(a) Replace all discs if one of the following problems is present: 1) a disc, plate or flange is worn or burnt; 2) the lining of a disc is peeled off or discolored; or 3) grooves or printed numbers have even minimal damage.





NOTICE:
Before assembling new discs, soak them in ATF for at least 2 hours.

17. INSPECT DIRECT CLUTCH RETURN SPRING SUB-ASSEMBLY

(a) Using a vernier caliper, measure the free length of the spring together with the spring seat.





Standard free length:

20.76 mm (0.817 in.)

If the free length is shorter than the standard free length, replace the direct clutch return spring sub-assembly.

18. INSPECT NO. 2 BRAKE PISTON RETURN SPRING SUB-ASSEMBLY

(a) Using a vernier caliper, measure the free length of the spring together with the spring seat.





Standard free length:

23.36 mm (0.920 in.)

If the free length is shorter than the standard free length, replace the No. 2 brake piston return spring sub-assembly.

19. INSPECT AUTOMATIC TRANSMISSION CASE SUB-ASSEMBLY

(a) Using a caliper gauge, measure the inside diameter of the automatic transmission case sleeve bush.





Standard inside diameter:

49.07 to 49.155 mm (1.93189 to 1.93523 in.)

If the inside diameter is not as specified, replace the automatic transmission case sub-assembly.