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Transmission Unit





AB60F AUTOMATIC TRANSMISSION / TRANSAXLE: AUTOMATIC TRANSMISSION UNIT: INSPECTION

1. INSPECT AUTOMATIC TRANSMISSION OIL PAN SUB-ASSEMBLY

(a) Remove the magnets, and use them to collect steel particles.





(b) Carefully look at the foreign matter and particles in the pan and on the magnets to anticipate the type of wear you will find in the transmission.

* Steel (magnetic): bearing, gear and clutch plate wear

* Brass (non-magnetic): bush wear

2. INSPECT NO. 2 1-WAY CLUTCH ASSEMBLY

(a) Hold the reverse clutch hub and turn the 1-way clutch assembly. Check that the 1-way clutch turns freely clockwise and locks when turned counterclockwise.





3. INSPECT REAR 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 have even a little bit of damage.





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

4. INSPECT REVERSE CLUTCH HUB SUB-ASSEMBLY

(a) Using a dial indicator, measure the inside diameter of the reverse clutch hub bush.





Standard inside diameter:

41.912 to 41.937 mm (1.410 to 1.411 in.)

* If the inside diameter is greater than the standard inside diameter, replace the reverse clutch hub.

5. INSPECT FORWARD CLUTCH HUB SUB-ASSEMBLY

(a) Using a dial indicator, measure the inside diameter of the forward clutch hub bush.





Standard inside diameter:

30.200 to 30.225 mm (1.189 to 1.190 in.)

* If the inside diameter is greater than the standard, replace the forward clutch hub.

6. INSPECT NO. 4 1-WAY CLUTCH ASSEMBLY

(a) Hold the coast clutch hub and turn the 1-way clutch assembly. Check that the 1-way clutch turns freely clockwise and locks when turned counterclockwise.





7. INSPECT FORWARD MULTIPLE DISC 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 a little bit of damage.





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

8. INSPECT COAST 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 a little bit of 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:

29.65 mm (1.17 in.)

10. INSPECT DIRECT 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 a little bit of damage.





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

11. 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:

21.24 mm (0.836 in.)

12. 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:

19.46 mm (0.766 in.)

13. INSPECT NO. 3 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 a little bit of damage.





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

14. INSPECT NO. 3 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:

15.72 mm (0.619 in.)

15. INSPECT FRONT PLANETARY GEAR ASSEMBLY

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





Standard clearance:

0.2 to 0.6 mm (0.00787 to 0.0236 in.)

* If the clearance is greater than the standard, replace the front planetary gear assembly.

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





Standard inside diameter:

61.005 to 61.030 mm (2.402 to 2.403 in.)

* If the inside diameter is greater than the standard, replace the front planetary gear.

16. INSPECT 1-WAY CLUTCH ASSEMBLY

(a) Install the 1-way clutch to the 1-way clutch inner race.





(b) Hold the 1-way clutch inner race and turn the 1-way clutch. Check that the 1-way clutch turns freely counterclockwise and locks when turned clockwise.

(c) Remove the 1-way clutch from the 1-way clutch inner race.

17. 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 a little bit of damage.





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

18. INSPECT 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:

17.05 mm (0.671 in.)

19. 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 a little bit of damage.





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

20. 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:

22.66 mm (0.892 in.)

21. INSPECT CENTER PLANETARY GEAR ASSEMBLY

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





Standard clearance:

0.20 to 0.60 mm (0.00787 to 0.0236 in.)

* If the clearance is greater than the standard, replace the center planetary gear assembly.

22. INSPECT NO. 3 1-WAY CLUTCH ASSEMBLY

(a) Hold the rear planetary ring gear flange and turn the 1-way clutch. Check that the 1-way clutch turns freely counterclockwise and locks when turned clockwise.





23. INSPECT INTERMEDIATE SHAFT

(a) Using a dial indicator, check the intermediate shaft runout.





Standard runout:

0.03 mm (0.00118 in.)

If the runout is greater than the standard, replace the intermediate shaft with a new one.

(b) Using a micrometer, check the outer diameter of the intermediate shaft at the positions shown in the diagram.





Standard Diameter:





If the diameter is less than the standard, replace the intermediate shaft with a new one.

24. INSPECT NO. 4 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 a little bit of damage.





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

25. INSPECT REAR PLANETARY GEAR ASSEMBLY

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





Standard clearance:

0.2 to 0.6 mm (0.00787 to 0.0236 in.)

* If the clearance is greater than the standard, replace the planetary gear assembly.

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





Standard inside diameter:

20.0 to 20.025 mm (0.787 to 0.788 in.)

* If the inside diameter is greater than the standard, replace the rear planetary gear assembly.

26. INSPECT 1ST AND REVERSE BRAKE RETURN SPRING SUB-ASSEMBLY

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





Standard free length:

23.54 to 23.94 mm (0.927 to 0.943 in.)

27. INSPECT INDIVIDUAL PISTON OPERATION

(a) Check the operating sound while applying compressed air into the oil holes indicated in the illustration.





HINT
When inspecting the direct clutch, check with the C3 accumulator piston holes indicated in the illustration.

If there is no sound, disassemble and check the installation condition of the parts.

(1) No. 2 clutch (C2)

(2) No. 3 clutch (C3)

(3) No. 4 clutch (C4)

(4) No. 1 clutch (C1)

(5) No. 3 brake (B3)

(6) No. 1 brake (B1)

(7) No. 2 brake (B2)

(8) No. 4 brake (B4)