Lexus RX300 (MCU15). Service manual — part 574

D03586

D03624

B

D03922

Dimension (1)

Dimension (2)

D03591

–

AUTOMATIC TRANSAXLE

COMPONENT PARTS

AX–39

U140F AX (RM848E)

(b)

Install direct clutch assembly and thrust bearing to the
rear planetary sun gear assembly.

NOTICE:
The disk in the direct clutch should completely mate with
the hub attached outside the rear planetary sun gear.
Otherwise, the rear cover can not be installed.

(c)

Clean the connected part of the transaxle case and rear
cover.

(d)

As shown in the illustration, place a straight edge on the
direct clutch drum and measure the distance between the
transaxle case and the straight edge using vernier cali-
pers (Dimension B).

(e)

Measure the 2 places of the rear cover as shown in the
illustration and calculate a dimension C using the follow-
ing formula.

HINT:
Dimension C = Dimension (1) – Dimension (2)
(f)

Calculate the end play value using the following formula.
Select a thrust bearing which satisfies the end play value
and install it.
End play: 0.2 – 0.9 mm (0.008 – 0.035 in.)

NOTICE:
Make sure that the black race side is facing the rear cover.
HINT:
End play = Dimension C – Dimension B
Bearing thickness and diameter: mm ( in.)

Thickness

Inside

Outside

3.55 (0.1397)

53.6 (2.110)

69.6 (2.740)

3.85 (0.1515)

53.6 (2.110)

70.18 (2.763)

16.

INSTALL 2 NEW APPLY GASKETS

D03923

D03585

D09193

SST

D03584

AX–40

–

AUTOMATIC TRANSAXLE

COMPONENT PARTS

U140F AX (RM848E)

17.

INSTALL APPLY PIPE

(a)

Install the clamp to the apply pipe.

NOTICE:
Make sure to install the clamp to the apply pipe before
installing the apply tube to the transaxle case. This pre-
vents the apply pipe from being deformed or damaged.

(b)

Install the 2 apply pipe and a bolt to the transaxle case.
Torque: 5.4 N·m (55 kgf·cm, 48 in.·lbf)

NOTICE:
Each pipe is securely inserted until it reaches the stopper.

18.

INSTALL TRANSAXLE REAR COVER

(a)

Using SST and a press, install the bearing.
SST

09950–60010 (09951–00230, 09951–00350)

Press fit depth: 12.05 – 12.75 mm (0.4744 – 0.5020 in.)

NOTICE:

S

Face the inscribed mark side of the bearing race up.

S

Repeat the press fit and the measurement until the
specified value above is obtained.

(b)

Apply liquid sealer to the 2 screws.
Sealant:
Part No. 08833–00080, THREE BOND 1344, LOCTITE
242 or equivalent.

(c)

Install the transaxle rear cover plate with the 2 screws.
Torque: 7.5 N·m (76 kgf·cm, 66 in.·lbf)

(d)

Coat the 2 oil seal rings with ATF, install them to the trans-
axle rear cover.

D10707

Seal Bend Width 1.2 mm (0.047 in.)

D10706

D03817

D03582

–

AUTOMATIC TRANSAXLE

COMPONENT PARTS

AX–41

U140F AX (RM848E)

(e)

Remove any packing material and be careful not to get oil
on the contacting surfaces of the transaxle rear cover or
the transaxle case.

(f)

Apply FIPG to the rear cover.
FIPG:
Part No. 08826–00090, THREE BOND 1281 or equiva-
lent.

(g)

Coat a needle roller bearing with ATF.

(h)

Apply liquid sealer to the ”A” bolt threads.
Sealant:
Part No. 08833–00080, THREE BOND 1344, LOCTITE
242 or equivalent.

(i)

Install the 11 bolts.
Torque:
Bolt A: 18.6 N·m (190 kgf·cm, 14 in.·lbf)
Other bolt: 24.5 N·m (250 kgf·cm, 18 ft·lbf)

19.

INSPECT DISC AND FLANGE OF U/D BRAKE

Check to see if the sliding surface of the disc, plate and flange
are worn or burnt. If necessary, replace them.
HINT:

S

If the lining of the disc is peeling off or discolored, or even
if a part of the printed mark is defaced, replace all discs.

S

Before assembling new discs, soak them in ATF for at
least 15 minutes.

20.

INSTALL U/D BRAKE

(a)

Install the 4 discs and 4 plates to the transaxle case.

(b)

Using a screwdriver, install the snap ring.

D03626

D03907

D03925

Free

D03627

AX–42

–

AUTOMATIC TRANSAXLE

COMPONENT PARTS

U140F AX (RM848E)

(c)

Using a dial indicator, measure the U/D brake piston
stroke while applying and releasing compressed air (392
kPa, 4.0 kgf/cm

2

, 57 psi).

Piston stroke: 1.81 – 2.07 mm (0.0713 – 0.0815 in.)

HINT:
Select an appropriate flange from the table below so that it will
meet the specified value.
Flange thickness: mm (in.)

Mark

Thickness

Mark

Thickness

1

3.0 (0.118)

3

3.4 (0.134)

2

3.2 (0.126)

–

–

(d)

Temporarily remove the snap ring and attach the flange.
Restore the snap ring.

21.

INSTALL ONE–WAY CLUTCH NO.2

(a)

Install the outer race retainer to the one–way clutch No.2.

(b)

Install the U/D clutch assembly to the one–way clutch.
Rotate the U/D clutch assembly to check the rotating
direction for the lock or free operation.

22.

INSTALL ONE–WAY CLUTCH NO.2

(a)

Install the one–way clutch No.2 to the transaxle case.

NOTICE:
Make sure that the mark on the one–way clutch outer race
is visible.