Lexus SC300 / Lexus SC400. Manual — part 818

ADJUSTMENT CHART

SA155–04

HOW TO READ ADJUSTMENT CHART

(a) Mark

on

the graph the measurements taken from the vehicle.

Example:

Camber +0

31

’

Caster +3

56

’

(b) As shown in the illustration, read from the graph the amounts

by which the front and/or rear cams are to be adjusted.

Amount to turn adjusting cam (by graduation):

Front cam +(Longer) 1.8

Rear cam –(Shorter) 2.2

SA–8

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SUSPENSION AND AXLE

WHEEL ALIGNMENT

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SUSPENSION AND AXLE

WHEEL ALIGNMENT

SA–9

REAR WHEEL ALIGNMENT

SA1A0–01

1.

MEASURE VEHICLE HEIGHT
Rear vehicle height (SC400):

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Tire size

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Rear

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P225/55R16

251.7 mm (9.909 in.)

Rear vehicle height (SC300):

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Tire size

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Rear

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P215/60R15

247.7 mm (9.752 in.)

Measuring point:
Measure from the ground to the center of the lower suspen-
sion arm No.2 mounting bolt.

NOTICE: Before inspecting the wheel alignment, adjust the vehicle height to specification.

If the vehicle height is not standard, try to adjust it by pushing
down on or lifting the body.

2. INSTALL

CAMBER–CASTER–KINGPIN

GAUGE

OR

ONTO WHEEL ALIGNMENT TESTER
Follow the specific instructions of the equipment manufactur-
er.

3. INSPECT

CAMBER

Camber:

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Camber

Left–right error

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–0

°

53

’

±

45

’

30

’

or less

4. INSPECT

TOE–IN

Toe–in (total):

A+B 0.4

°

±

0.2

°

C–D

4.5

±

2 mm (0.18

±

0.08 in.)

5.

ADJUST CAMBER AND TOE–IN

(a) Measure the length of the lower suspension arm No.1 and

No.2, as shown in the illustration.

SA–10

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SUSPENSION AND AXLE

WHEEL ALIGNMENT

Length:

(E–F) or (F–E) should be less 4.0 mm.

If not, adjust the length of the arms by turning the adjusting
cam, as shown, until (E–F) or (F–E) is less than 4.0 mm.

(b) Measure the camber and toe–in.

Specifications:

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Camber

Left–right error

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ÑÑÑÑÑÑÑÑÑÑÑÑ

ÑÑÑÑÑÑÑÑÑÑÑÑ

–0

53

’

±

30

’

30’ or less

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ÑÑÑÑÑÑÑÑÑÑÑ

ÑÑÑÑÑÑÑÑÑÑÑ

Toe–in

ÑÑÑÑÑÑÑÑÑÑÑÑ

ÑÑÑÑÑÑÑÑÑÑÑÑ

ÑÑÑÑÑÑÑÑÑÑÑÑ

A+B 0.4

±

0.1

C–D 4.5

±

1 mm (0.18

±

0.04 in.)

If the camber and toe–in are still not within the specification,
adjust the camber and toe–in with the adjusting cam.

(c) Loosen and adjust the No.1 and/or No.2 cams.
(d) Adjust camber and toe–in by turning the No.1 and/ or No.2

cams.
(See

adjustment chart

)

(e) Torque the No.1 and/or No.2 cam nuts.

Torque: 184 N

⋅

m (1,880 kgf

⋅

cm, 134 ft

⋅

lbf)

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SUSPENSION AND AXLE

WHEEL ALIGNMENT

SA–11