Lexus RX300 (MCU15). Service manual — part 596

AX0BH–02

D03120

SST

D03121

SST

SST

SST

D03123

SST

D03124

SST

D03125

–

AUTOMATIC TRANSAXLE

TRANSFER

AX–127

U140F AX (RM848E)

REASSEMBLY

1.

INSTALL REAR BEARING OUTER RACE

Using SST and a press, install the outer race.

SST

09950–60010 (09951–00620), 09950–70010
(09951–07150)

2.

INSTALL FRONT BEARING OUTER RACE

(a)

Install the washer to the transfer case.

HINT:
First install a washer of the same thickness as before.
(b)

Using SST, bolt and nut, install outer race to the transfer
case.
SST

09950–60010 (09951–00610, 09951–00620),
09950–60020 (09951–00790, 09951–00810)

3.

INSTALL BEARING OUTER RACE LH

(a)

Install the washer to the transfer case.

HINT:
First install a washer of the same thickness as before.
(b)

Using SST and a press, install outer race to the transfer
case.
SST

09950–60010 (09951–00700), 09950–70010
(09951–07200)

4.

INSTALL DRIVEN PINION

(a)

Using SST and a press, install the front bearing inner race
to the driven pinion.
SST

09316–60011 (09316–00041)

(b)

Install the driven pinion to the transfer case.

D03126

D09833

SST

Fulcrum
Length 380 mm

D03093

SST

AX–128

–

AUTOMATIC TRANSAXLE

TRANSFER

U140F AX (RM848E)

(c)

Install a new spacer and rear bearing inner race to the
driven pinion.

(d)

Using SST, install the lock nut.
SST

09326–20011, 09556–16030

Torque:
308 N·m (3,142 kgf·cm, 227 ft·lbf) for use with SST
349 N·m (3,560 kgf·cm, 257 ft·lbf)

HINT:

S

Using a torque wrench with a fulcrum length of 380 mm
(15.03 in.).

S

This torque value is effective in case the SST is parallel
to torque wrench.

NOTICE:
Do not tighten the nut until the final adjustment of the pre-
load, tooth contact and backlash is completed.

5.

CHECK DRIVEN PINION PRELOAD

Using SST and torque wrench, measure the driven pinion pre-
load.

SST

09326–20011

Preload (at starting):
New bearing:
0.9 – 1.4 N·m (9 – 14 kgf·cm, 7.8 – 12.4 in.·lbf)
Reused bearing:
0.8 – 1.1 N·m (8 – 11 kgf·cm, 7.1 – 9.7 in.·lbf)

HINT:

S

Using a torque wrench with a fulcrum length of 160 mm
(6.3 in.).

S

This torque value is effective in case that SST is parallel
to torque wrench.

S

If the preload is not sufficient, adjust the driven pinion by
tightening the lock nut by 5° to 10° and measuring the
preload until the preload is with in the standard value.

S

If the preload is more than the standard value, replace the
spacer with a new one.

SA1143

Boiling Water

D03110

Matchmarks

D03128

LH

RH

SST

SST

SST

–

AUTOMATIC TRANSAXLE

TRANSFER

AX–129

U140F AX (RM848E)

S

If the tightening torque for a driven pinion nut is more than
the standard value, and the preload is not sufficient, loos-
en the lock nut, apply gear oil on the thread and bearing
surface and adjust it as described above. When the tight-
ening torque is less than the standard value, replace the
spacer with a new one

6.

ASSEMBLE CENTER DIFFERENTIAL CONTROL
COUPLING

(a)

Clean the contact surface of the ring gear and center dif-
ferential control coupling.

(b)

Heat the ring gear in water and boil for 10 minutes.

(c)

Carefully remove the ring gear from the water.

(d)

After the moisture on the ring gear has completely evapo-
rated, quickly install the ring gear to the center differential
control coupling.

(e)

Install the 12 bolts.
Torque: 77.5 N·m (791 kgf·cm, 57 ft·lbf)

(f)

Using SST and a press, install the center differential case
tapered roller bearing inner race LH and RH.
SST

09223–00010, 09506–35010, 09950–60010
(09951–00420)

D03104

D03130

SST

D03100

D03094

AX–130

–

AUTOMATIC TRANSAXLE

TRANSFER

U140F AX (RM848E)

7.

INSTALL CENTER DIFFERENTIAL CONTROL COU-
PLING

8.

INSTALL CENTER DIFFERENTIAL CASE TAPERED
ROLLER BEARING OUTER RACE RH

(a)

Install the washer to the bearing retainer RH.

HINT:
First install a washer of the same thickness as before.
(b)

Using SST and a press, install the outer race to the bear-
ing retainer RH.
SST

09550–60010 (09951–00620), 09950–70010
(09951–07150)

9.

INSTALL BEARING RETAINER RH

Install the bearing retainer RH with 7 bolts.

Torque: 28 N·m (286 kgf·cm, 21 ft·lbf)

10.

INSPECT BACKLASH

Using a dial indicator, measure the backlash of the ring gear at
3 positions at least.

Backlash: 0.10 – 0.15 mm (0.0039 – 0.0059 in.)

HINT:
The measure values should be used as reference when select-
ing washer, so take a note of the values.
If the backlash is not within the specification replace the washer
on the ring gear side with one of a different thickness using the
following procedure.