Lexus RX300 (MCU15). Manual - part 433

EM0B4–05

P18754

P18816

A05068

SST

A05048

SST

EM–16

–

ENGINE MECHANICAL

TIMING BELT

LEXUS RX300   (RM785E)

REMOVAL

1.

REMOVE OUTER COWL TOP PANEL 
(See page EM–75)

2.

REMOVE FRONT UPPER SUSPENSION BRACE (See
page EM–75)

3.

REMOVE RH FRONT WHEEL

4.

REMOVE RH FENDER APRON SEAL

5.

REMOVE ALTERNATOR DRIVE BELT 
(See page CH–6)

6.

REMOVE PS PUMP DRIVE BELT

Loosen the 2 bolts, and remove the drive belt.
7.

REMOVE CRUISE CONTROL ACTUATOR

8.

DISCONNECT GROUND STRAP CONNECTORS

9.

REMOVE ENGINE MOVING CONTROL ROD AND NO.
2 RH ENGINE MOUNTING BRACKET 
(See page EM–75)

10.

REMOVE NO. 2 ALTERNATOR BRACKET

(a)

Loosen the alternator pivot bolt.

(b)

Remove the nut and bracket.

11.

REMOVE CRANKSHAFT PULLEY

(a)

Using SST, remove the pulley bolt.
SST

09213–54015 (91651–60855), 09330–00021

(b)

Using SST, remove the pulley.
SST

09950–50012 (09951–05010, 09952–05010,
09953–05010,  09953–05020, 09954–05020)

A05049

A05050

Clamp

Clamp

P18814

A05051

A05052

–

ENGINE MECHANICAL

TIMING BELT

EM–17

LEXUS RX300   (RM785E)

12.

REMOVE NO. 1 TIMING BELT COVER

Remove the 4 bolts and timing belt cover.
13.

REMOVE TIMING BELT GUIDE

14.

REMOVE NO. 2 TIMING BELT COVER

(a)

Disconnect the engine wire protector clamps from the No.
3 timing belt cover.

(b)

Remove the 5 bolts and timing belt cover.

15.

REMOVE RH ENGINE MOUNTING BRACKET

Remove the 2 bolts, nut and mounting bracket.

16.

SET NO. 1 CYLINDER TO TDC/COMPRESSION

(a)

Temporarily install the crankshaft pulley bolt to the crank-
shaft.

(b)

Turn the crankshaft, and align the timing marks of the
crankshaft timing pulley and oil pump body.

NOTICE:
Always turn the crankshaft clockwise.

(c)

Check that timing marks of the camshaft timing pulleys
and No. 3 timing belt cover are aligned.

If not, turn the crankshaft 1 revolution (360

°).

(d)

Remove the crankshaft pulley bolt.

A01804

A05053

A05054

SST

RH:

A05056

SST

LH:

A05055

EM–18

–

ENGINE MECHANICAL

TIMING BELT

LEXUS RX300   (RM785E)

17.

IF REUSING TIMING BELT, CHECK INSTALLATION
MARKS ON TIMING BELT

Check that there are 3 installation marks and front mark on the
timing belt.
If the installation and front marks have disappeared, before re-
moving the timing belt, place 3 new installation marks on the
timing belt to match the timing marks of the timing pulleys, and
place a new front mark on the timing belt.

18.

REMOVE TIMING BELT TENSIONER

Alternately loosen the 2 bolts, and remove them, the tensioner
and dust boot.
19.

REMOVE TIMING BELT

20.

REMOVE CAMSHAFT TIMING PULLEYS

(a)

Using SST, remove the bolt and RH timing pulley.
SST

09249–63010, 09960–10010 (09962–01000,
09963–01000)

(b)

Using SST, remove the LH timing pulley.
SST

09960–10010 (09962–01000, 09963–01000)

HINT:
Arrange the camshaft timing pulleys (RH and LH sides).

21.

REMOVE NO. 2 IDLER PULLEY

Remove the bolt and idler pulley.

A01802

10 mm

Hexagon
Wrench

Plate Washer

A05057

SST

–

ENGINE MECHANICAL

TIMING BELT

EM–19

LEXUS RX300   (RM785E)

22.

REMOVE NO. 1 IDLER PULLEY

Using a 10 mm hexagon wrench, remove the bolt, idler pulley
and plate washer.

23.

REMOVE CRANKSHAFT TIMING PULLEY

(a)

Remove the bolt and timing belt plate.

(b)

Using SST, remove the crankshaft timing pulley.
SST

09950–50012 (09951–05010, 09952–05010,
09953–05010,  09953–05020, 09954–05010)

NOTICE:
Do not scratch the sensor part of the crankshaft timing
pulley.