Lexus RX300 (MCU15). Service manual — part 582

D03661

D03660

D03659

D03672

–

AUTOMATIC TRANSAXLE

FORWARD CLUTCH

AX–71

U140F AX (RM848E)

3.

INSTALL PLATE, DISC AND FLANGE

Install the flange, 6 plates and 6 discs in order.

Install in order: P=Plate, D=Disc, F=Flange
P – D – P – D – P – D – P – D – P – D – P – D – F

4.

INSTALL SNAP RING

(a)

Using a screwdriver, install the snap ring.

(b)

Check that the end gap of the snap ring is not aligned with
one of the cutouts.

5.

CHECK PISTON STROKE OF FORWARD CLUTCH

(a)

Using a dial indicator, measure the forward clutch piston
stroke while applying and releasing compressed air (392
kgf/cm

2

, 4.0 kPa, 57 psi).

Piston stroke: 2.09 – 2.23 mm (0.0823 – 0.0878 in.)

If the piston stroke is less than the limit, parts may have been
assembled incorrectly, check and reassemble again.
If the clearance is non–standard, select another flange.
HINT:
There are 5 different flanges in thickness.
Flange thickness: mm (in.)

No.

Thickness

No.

Thickness

1

3.00 (0.1181)

4

3.45 (0.1358)

2

3.15 (0.1240)

5

3.60 (0.1417)

3

3.30 (0.1299)

–

–

6.

CHECK DISK ROTATE

Check that the disc lightly rotates when rotating the forward
clutch assembly after inserting the multiple disc clutch into it.
NOTICE:
Do not place the forward clutch assembly in a vise.

AX0AW–02

D03842

Snap Ring

Piston Return Spring

2nd Brake Piston

2nd Brake Cylinder

z O–ring

z Non–reusable part

AX–72

–

AUTOMATIC TRANSAXLE

SECOND BRAKE

U140F AX (RM848E)

SECOND BRAKE

COMPONENTS

AX0AX–02

D03796

SST

D03843

D03844

D03846

–

AUTOMATIC TRANSAXLE

SECOND BRAKE

AX–73

U140F AX (RM848E)

DISASSEMBLY

1.

REMOVE PISTON RETURN SPRING

(a)

Place SST on the piston return spring and compress.
SST

09387–00060

(b)

Using a screwdriver, remove the snap ring.

(c)

Remove the piston return spring.

2.

REMOVE 2ND BRAKE PISTON

(a)

Hold the 2nd brake piston and apply compressed air (392
kPa, 4.0 kgf/cm

2,

57 psi) to the 2nd brake cylinder to re-

move the 2nd brake piston.

(b)

Remove the 2 O–rings from the 2nd brake piston.

AX0AY–03

D03824

AX–74

–

AUTOMATIC TRANSAXLE

SECOND BRAKE

U140F AX (RM848E)

INSPECTION

CHECK 2ND BRAKE PISTON RETURN SPRING
Using vernier calipers, measure the free length of the spring to-
gether with the spring seat.

Standard free length: 16.61 mm (0.6539 in.)