| Last Modified: 11-29-2007 | 1.6 G | |
| Service Category: Drivetrain | Section: Automatic Transmission/Transaxle | |
| Model Year: 2008 | Model: Sequoia | Doc ID: RM0000013EX01LX |
| Title: AB60E AUTOMATIC TRANSMISSION / TRANSAXLE: AUTOMATIC TRANSMISSION UNIT: INSPECTION (2008 Sequoia) | ||
INSPECTION
1. INSPECT AUTOMATIC TRANSMISSION OIL PAN SUB-ASSEMBLY
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(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
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(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
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(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
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(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
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(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
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(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
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(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
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(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
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(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
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(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
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(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
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(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
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(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
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(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
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(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. |
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(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
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(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
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(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
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(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
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(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
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(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
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(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
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(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
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(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. |
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(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
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(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
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(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. |
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(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
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(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
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(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. HINT: If there is no sound, disassemble and check the installation condition of the parts.
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