Automatic Transmission Unit Assembly Inspection

Automatic Transmission Unit Assembly Inspection

^ Hold reverse clutch hub (1), and turn one-way No.2 clutch assembly (2).
Check that one-way No.2 clutch assembly (2) can be turned freely (3) clockwise and locked (4) counterclockwise.





^ Check that sliding surfaces of discs, plate and flange are not worn or burnt. If necessary replace them.

NOTE:
^ If disc lining is exfoliated, discolored or worn hardly, replace all discs.
^ If only a part of printed numbers is corroded, replace all discs.
^ Before assembling new discs, soak them in A/T fluid for at least 2 hours.





^ Measure free length of 2nd (No.3) brake piston return spring including spring seat.

2nd (No.3) brake piston return spring free length
"a": 15.72 mm (0.619 in.)

NOTE:
^ Do not apply excessive force when measuring spring free length.
^ Perform measurement at several points.





^ Measure planetary pinion gear thrust clearance by using thickness gauge.
If clearance exceeds limit, replace front planetary gear assembly.

Front planetary pinion gear thrust clearance
Standard: 0.20 - 0.60 mm (0.008 - 0.024 in.)
Limit: 0.65 mm (0.026 in.)





^ Measure inside diameter of front planetary gear assembly bushing.
If inside diameter exceeds limit, replace front planetary gear assembly.

Front planetary gear assembly bushing inside diameter limit
57.48 mm (2.263 in.)





^ Install one-way No.1 clutch assembly (1) to one-way No.1 clutch inner race (2).
Hold one-way No.1 clutch inner race (2), and turn one-way No.1 clutch assembly (1).
Check that one-way No.1 clutch assembly (1) can be turned freely (3) counterclockwise and locked (4) clockwise.
Remove one-way No.1 clutch assembly (1) from one-way No.1 clutch inner race (2).





^ Measure free length of No.1 brake piston return spring including spring seat.

No.1 brake piston return spring free length
"a": 17.05 mm (0.671 in.)

NOTE:
^ Do not apply excessive force when measuring spring free length.
^ Perform measurement at several points.





^ Measure free length of No.2 brake piston return spring including spring seat.

No.2 brake piston return spring free length
"a": 17.45 mm (0.687 in.)

NOTE:
^ Do not apply excessive force when measuring spring free length.
^ Perform measurement at several points.





^ Measure planetary pinion gear thrust clearance by using thickness gauge.
If clearance exceeds limit, replace middle planetary gear assembly.

Middle planetary pinion gear thrust clearance
Standard: 0.12 - 0.68 mm (0.005 - 0.027 in.)
Limit: 0.73 mm (0.029 in.)





^ Hold rear planetary ring gear flange sub assembly (1) and turn one-way No.3 clutch assembly (2). Check that one-way No.3 clutch assembly (2) can be turned freely (3) counterclockwise and locked (4) clockwise.





^ Measure inside diameter of planetary ring gear assembly bushing.
If inside diameter exceeds limit, replace planetary ring gear.

Planetary ring gear bushing inside diameter limit
32.19 mm (1.267 in.)





^ Set intermediate shaft between two "V" blocks, and measure its runout by using a dial gauge.
If runout exceeds limit, replace intermediate shaft with new one.

Intermediate shaft runout limit
0.08 mm (0.003 in.)





^ Measure outside diameter of intermediate shaft positions shown in figure.
If outside diameter is below limit, replace intermediate shaft with new one.

Outside diameter of intermediate shaft





Standard Limit
A 25.962 - 25.975 mm (1.022 - 1.023 in.) 25.912 mm (1.020 in.)
B 25.962 - 25.975 mm (1.022 - 1.023 in.) 25.912 mm (1.020 in.)
C 32.062 - 32.075 mm (1.262 - 1.263 in.) 32.012 mm (1.260 in.)
D 32.062 - 32.075 mm (1.262 - 1.263 in.) 32.012 mm (1.260 in.)





^ Measure planetary pinion gear thrust clearance by using thickness gauge.
If clearance exceeds limit, replace rear planetary gear assembly.

Rear planetary pinion gear thrust clearance
Standard: 0.2 - 0.6 mm (0.008 - 0.024 in.)
Limit: 0.65 mm (0.026 in.)





^ Measure inside diameter of rear planetary gear assembly bushing.
If inside diameter exceeds limit, replace rear planetary gear assembly.

Rear planetary gear inside diameter limit
20.075 mm (0.790 in.)





^ Measure free length of 1st & reverse (No.4) brake return spring including spring seat.

1st & reverse (No.4) brake return spring free length
"a": 23.74 mm (0.935 in.)

NOTE:
^ Do not apply excessive force when measuring spring free length.
^ Perform measurement at several points.