Lexus SC300 / Lexus SC400. Manual - part 359

(c) Measure 

the protrusion of the push rod from the housing end.

Protrusion:

10.5 – 11.5 mm (0.413 – 0.453 in.)

If the protrusion is not as specified, replace the tensioner.

EG21R–02

TIMING BELT INSTALLATION

See Components for Removal and 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 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 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) Using 

the crankshaft pulley bolt, turn the crankshaft and align

the timing marks of the crankshaft timing pulley and oil pump
body.

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ENGINE MECHANICAL

EG–59

(b)  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.

(c)  Align the installation mark on the timing belt with the dot mark

of the crankshaft timing pulley.

(d)  Install the timing belt on the crankshaft timing pulley.

No.1 idler pulley and No.2 idler pulley.

5.  INSTALL TIMING BELT GUIDE (CRANKSHAFT ANGLE

SENSOR PLATE)
Install the belt guide, facing the cup side outward.

6. 

INSTALL TIMING BELT COVER SPACER

(a)  Install the gasket to the cover spacer.
(b)  Install the cover spacer.

7. 

INSTALL NO.1 TIMING BELT COVER

(a)  Install the gasket to the timing belt cover.
(b)  Install the timing belt cover with the 4 bolts.

EG–60

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ENGINE MECHANICAL

8. 

INSTALL HYDRAULIC PUMP

(a)  Install the hydraulic pump, solenoid valve connector clamp

and crankshaft position sensor wire clamp with the 2 bolts
and 2 nuts.

Torque:

16 N

⋅

m (160 kgf

⋅

cm, 12 ft

⋅

lbf) for 12 mm head

30 N

⋅

m (310 kgf

⋅

cm, 22 ft

⋅

lbf) for 14 mm head

HINT: Each bolt length is indicated in the illustration.
Bolt length:

106 mm (4.17 in.) for A of 12 mm head
114 mm (4.49 in.) for B of 14 mm head

(b)  Connect the solenoid valve connector.

9. 

INSTALL CRANKSHAFT PULLEY

(a)  Align the pulley set key with the key groove of the crankshaft

pulley.

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

SST 09223–46011

(c)  Using SST, install the pulley bolt.

SST 09213–70010, 09330–00021

Torque: 245 N

⋅

m (2,500 kgf

⋅

cm, 181 ft

⋅

lbf)

10.  INSTALL RH CAMSHAFT TIMING PULLEY
(a) Align 

the camshaft knock pin with the knock pin groove of the

timing pulley, and slide on the timing pulley.

(b)  Slide the timing pulley on the camshaft, facing the “R” mark

forward.

(c)  Using SST, install the pulley bolt.

SST 09278–54012

Torque: 108 N

⋅

m (1,100 kgf

⋅

cm, 80 ft

⋅

lbf)

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EG–61

11.  INSTALL LH CAMSHAFT TIMING PULLEY
(a) Align 

the camshaft knock pin with the knock pin groove of the

timing pulley, and slide on the timing pulley.

(b)  Slide the timing pulley on the camshaft, facing the “L” mark

forward.

(c)  Using SST, install the pulley bolt.

SST 09278–54012

Torque: 108 N

⋅

m (1,100 kgf

⋅

cm, 80 ft

⋅

lbf)

12.  SET NO.1 CYLINDER TO TDC/COMPRESSION
(a)  Crankshaft Pulley Position:

Turn the crankshaft pulley, and align its groove with timing
mark “0” of the No. 1 timing belt cover.

(b)  (Camshaft Timing Pulley Position)

Using SST, turn the camshaft timing pulley, and align the tim-
ing marks of the camshaft timing pulley and timing belt rear
plate.
SST 09278–54012

13.  CONNECT TIMING BELT TO LH CAMSHAFT TIMING

PULLEY

(a)  Align the installation mark on the timing belt with the the end

of the hydraulic pump.

(b)  Remove any oil or water on the LH camshaft timing pulley,

and keep it clean.

(c)  Using SST, slightly turn the LH camshaft timing pulley

clockwise. Align the installation mark on the timing belt with
the timing mark of the camshaft timing pulley, and hang the
timing belt on the LH camshaft timing pulley.
SST 09278–54012

EG–62

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