Toyota A442F, Руководство по ремонту, Страница: 57 / 143

AT-44
AUTOMATIC TRANSMISSION - OVERDRIVE UNIT
OVERDRIVE UNIT INSPECTION
1. INSPECT DISCS, PLATES AND FLANGE
Check to see if the sliding surface of the disc, plate
and flange are worn or burnt. If necessary, replace
them.
HINT:
• If the lining of the disc is peeling off or discolored,
or even if parts of the printed numbers are def-
aced, replace all discs.
• Before assembling new discs, soak them in ATF
for at least fifteen minutes.
2. INSPECT OVERDRIVE DIRECT CLUTCH PISTON
(a) Check that check ball is free by shaking the piston.
(b) Check that the valve does not leak by applying low
pressure compressed air.
3. INSPECT BUSHINGS OF OVERDRIVE DIRECT
CLUTCH DRUM
Using a dial indicator, measure the inside diameter
Standard inside diameter:
26.500-26.521 mm (1.0433-1.0441 in.)
Maximum inside diameter;
26.57 mm (1.0461 in.)
If the inside diameter is greater than maximum, re-
place the clutch drum.
4. INSPECT BUSHINGS OF OVERDRIVE PLANETARY
GEAR
Using a dial indicator, measure the inside diameter.
Standard inside diameter:
12.000-12.018 mm (0.4724-0.4731 in.)
Maximum inside diameter:
12.070 mm (0.4752 in.)
If the inside diameter is greater than maximum, re-
place the planetary gear.