Lexus RX300 (MCU15). Service manual — part 583

AX0AZ–02

D03846

D03845

D03843

D03796

SST

–

AUTOMATIC TRANSAXLE

SECOND BRAKE

AX–75

U140F AX (RM848E)

REASSEMBLY

1.

INSTALL 2ND BRAKE PISTON

(a)

Coat 2 new O–rings with ATF and install them in the 2nd
brake piston.

(b)

Be careful not to damage the O–rings and press in the
2nd brake piston into the 2nd brake cylinder with a your
hands.

2.

INSTALL PISTON RETURN SPRING

(a)

Install the piston return spring.

(b)

Place SST on the piston return spring, and compress the
piston return spring with a press.
SST

09387–00060

(c)

Using a screwdriver, install the snap ring.

NOTICE:
Be sure the end gap of the snap ring is not aligned with the
piston return spring claw.

AX0B4–04

D03683

z Non–reusable part

Cylindrical
Roller Bearing
Inner Race

Differential
Drive Pinion

Parking Lock Gear

Tapered Roller Bearing FR

U/D Planetary
Ring Gear

Snap Ring

Counter Driven Gear

U/D Planetary Gear

Tapered Roller Bearing RR

z

See page AX–79

AX–76

–

AUTOMATIC TRANSAXLE

UNDERDRIVE PLANETARY GEAR

U140F AX (RM848E)

UNDERDRIVE PLANETARY GEAR

COMPONENTS

AX0B5–03

D03685

SST

SST

D03686

SST

D03687

D03688

SST

D03689

SST

SST

–

AUTOMATIC TRANSAXLE

UNDERDRIVE PLANETARY GEAR

AX–77

U140F AX (RM848E)

DISASSEMBLY

1.

MEASURE STARTING TORQUE OF U/D INPUT SHAFT

Using SST and a small torque wrench, measure the staring
torque of the U/D input shaft.

SST

09387–00050, 09564–16020

Turning torque at 60 rpm:
0.5 – 3.3 N·m (5 – 33 kgf·cm, 4.3 – 28.6 in.·lbf)

HINT:
Use a torque wrench with a fulcrum length of 160 mm (6.3 in.).

2.

REMOVE CYLINDRICAL ROLLER BEARING INNER
RACE

(a)

Using SST, loosen the staked part of the nut.
SST

09930–00010 (09931–00010, 09930–00020)

(b)

Clamp the U/D planetary gear in soft jaw vise.

NOTICE:
Be careful not to damage the differential drive pinion.

(c)

Using SST, remove lock nut.
SST

09564–16020

(d)

Using SST, remove cylindrical roller bearing inner race.
SST

09950–00020, 09950–00030, 09950–60010
(09951–00340)

D03690

SST

D03691

SST

SST

D03826

D03827

AX–78

–

AUTOMATIC TRANSAXLE

UNDERDRIVE PLANETARY GEAR

U140F AX (RM848E)

3.

REMOVE U/D PLANETARY GEAR

(a)

Using SST and a press, remove the differential drive pin-
ion, parking lock gear, counter driven gear with U/D plane-
tary ring gear and tapered roller bearing FR.
SST

09387–00050

(b)

Clamp the U/D planetary gear in soft jaw vise.

(c)

Using SST, remove the tapered roller bearing RR from the
U/D planetary gear.
SST

09950–00020, 09950–00030, 09950–60010
(09951–00320)

4.

REMOVE U/D PLANETARY RING GEAR

(a)

Using snap ring pliers, remove snap ring.

(b)

Remove the U/D planetary ring gear from the counter
driven gear.