Lexus LS400 (2000 year). Manual — part 82

EM109–01

A03235

SST

Inward

A03906

10 mm
Hexagon
Wrench

Plate Washer

Adhesive

A01880

EM–22

–

ENGINE MECHANICAL

TIMING BELT

1204

INSTALLATION

1.

INSTALL CRANKSHAFT TIMING PULLEY

(a)

Align the timing pulley set key with the key groove of the
pulley.

(b)

Using SST and a hammer, tap in the timing pulley, facing
the flange side inward.
SST

09223–46011

2.

INSTALL NO.1 IDLER PULLEY

(a)

Apply adhesive 2 or 3 threads of the pivot bolt.
Adhesive:
Part No. 08833–00080, THREE BOND 1344,
LOCTITE 242 or equivalent

(b)

Using a 10 mm hexagon wrench, install the plate washer
and idler pulley with the pivot bolt.
Torque: 34.5 N·m (350 kgf·cm, 25 ft·lbf)

(c)

Check that the pulley bracket moves smoothly.

3.

INSTALL NO.2 IDLER PULLEY

(a)

Install the idler pulley with the bolt.
Torque: 34.5 N·m (350 kgf·cm, 25 ft·lbf)

(b)

Check that the idler pulley moves smoothly.

4.

TEMPORARILY INSTALL TIMING BELT

NOTICE:
The engine should be cold.
(a)

Remove any oil or water on the crankshaft pulley, oil
pump pulley, water pump pulley, No.1 idler pulley and
No.2 idler pulley, and keep them clean.

NOTICE:
Only wipe the pulleys; do not use any cleansing agent.

(b)

Align the installation mark on the timing belt with the tim-
ing mark of the crankshaft timing pulley.

(c)

Install the timing belt on the crankshaft timing pulley, No.1
idler pulley and No.2 idler pulley.

A03234

A01881

P21317

SST

A01890

Timing
Mark

No.2 Idler Pulley Bolt

–

ENGINE MECHANICAL

TIMING BELT

EM–23

1205

5.

INSTALL TIMING BELT COVER SPACER

(a)

Install the gasket to the cover spacer.

(b)

Install the cover spacer.

6.

INSTALL TIMING BELT GUIDE

Install the belt guide, facing the cup side outward.
7.

INSTALL NO.1 TIMING BELT COVER

Install the timing belt cover with the 4 bolts.

8.

INSTALL CRANKSHAFT PULLEY

(a)

Align the pulley set key with the key groove of the crank-
shaft pulley.

(b)

Using SST and a hammer, tap in the crankshaft pulley.
SST

09223–46011

9.

INSTALL DRIVE BELT TENSIONER

Install the belt tensioner with the bolt and 2 nuts.

Torque: 16 N·m (160 kgf·cm, 12 ft·lbf)

HINT:
Use a bolt 106 mm (4.18 in.) in length.
10.

INSTALL GENERATOR (See page

CH–18

)

11.

CHECK CRANKSHAFT PULLEY POSITION

Check that the timing mark of the crankshaft pulley is aligned
with the centers of the crankshaft pulley and the idler pulley bolt.

A03350

Hold

SST

A03352

Hold

SST

A03354

Turn

SST

A03353

Turn

Tension

SST

A03355

Turn

SST

EM–24

–

ENGINE MECHANICAL

TIMING BELT

1206

12.

INSTALL LH CAMSHAFT TIMING PULLEY

(a)

Align the camshaft timing tube knock pin with the knock
pin groove of the timing pulley.

(b)

Attach the timing pulley to the camshaft timing tube, fac-
ing the ”L” mark forward.

(c)

Using SST, install the 4 pulley bolts.
SST

09960–10010 (09962–01000, 09963–00350)

Torque: 7.5 N·m (80 kgf·cm, 66 ft·lbf)

13.

INSTALL RH CAMSHAFT TIMING PULLEY

(a)

Align the camshaft timing tube knock pin with the knock
pin groove of the timing pulley.

(b)

Attach the timing pulley to the camshaft timing tube, fac-
ing the ”R” mark forward.

(c)

Using SST, install the 4 pulley bolts.
SST

09960–10010 (09962–01000, 09963–00350)

Torque: 7.5 N·m (80 kgf·cm, 66 ft·lbf)

14.

CONNECT TIMING BELT TO LH CAMSHAFT TIMING
PULLEY

(a)

Remove any oil or water on the LH camshaft timing pulley,
and keep it clean.

NOTICE:
Only wipe the pulleys; do not use any cleansing agent.
(b)

Using SST, turn the timing pulley. Align the installation
mark on the timing belt with the timing mark of the timing
pulley, and hang the timing belt on the timing pulley.
SST

09960–10010 (09962–01000, 09963–00350)

(c)

Using SST, turn the LH camshaft timing pulley counter-
clockwise until there is tension between the crankshaft
timing pulley and LH camshaft timing pulley.
SST

09960–10010 (09962–01000, 09963–00350)

15.

CONNECT TIMING BELT TO RH CAMSHAFT TIMING
PULLEY

(a)

Remove any oil or water on the RH camshaft timing pulley
and water pump pulley, and keep them clean.

NOTICE:
Only wipe the pulleys; do not use any cleansing agent.
(b)

Using SST, turn the timing pulley. Align the installation
mark on the timing belt with the timing mark of the timing
pulley, and hang the timing belt on the timing pulley.
SST

09960–10010 (09962–01000, 09963–00350)

P20636

1.27 mm
Hex ago n
Wrench

A02104

1.27 mm
Hex ago n
Wrench

A01871

Turn

A01872

P21316

SST

–

ENGINE MECHANICAL

TIMING BELT

EM–25

1207

16.

SET TIMING BELT TENSIONER

(a)

Using a press, slowly press in the push rod using 981 –
9,807 N (100 – 1,000 kgf, 220 – 2,205 lbf) of pressure.

(b)

Align the holes of the push rod and housing, pass a 1.27
mm hexagon wrench through the holes to keep the set-
ting position of the push rod.

(c)

Release the press.

(d)

Install the dust boot to the belt tensioner.

17.

INSTALL TIMING BELT TENSIONER

(a)

Temporarily install the belt tensioner with the 2 bolts.

(b)

Alternately tighten the 2 bolts.
Torque: 26 N·m (270 kgf·cm, 19 ft·lbf)

(c)

Using pliers, remove the 1.27 mm hexagon wrench from
the belt tensioner.

18.

CHECK VALVE TIMING

(a)

Temporarily install the crankshaft pulley bolt.

(b)

Slowly turn the crankshaft pulley 2 revolutions from TDC
to TDC.

NOTICE:
Always turn the crankshaft pulley clockwise.

(c)

Check that each pulley aligns with the timing marks as
shown in the illustration.

If the timing marks do not align, remove the timing belt and rein-
stall it.

19.

TIGHTEN CRANKSHAFT PULLEY BOLT

Using SST, install the pulley bolt.

SST

09213–54015 (90119–08216),
09330–00021

Torque: 245 N·m (2,500 kgf·cm, 181 ft·lbf)