Toyota 4Runner manuals

Toyota 4Runner: Adjustment

ADJUSTMENT

CAUTION / NOTICE / HINT

NOTICE:

If the wheel alignment has been adjusted, and if suspension or underbody components have been removed/installed or replaced, be sure to perform the following initialization procedure in order for the system to function normally:

  • Perform zero point calibration of the yaw rate and acceleration sensor and the test mode inspection.

PROCEDURE

1. INSPECT TIRES

(a) Inspect the tires (See page ).


2. MEASURE VEHICLE HEIGHT


NOTICE:

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

(a) Press down on the vehicle several times to stabilize the suspension, and then measure the vehicle height.

Text in Illustration

*a

Front Side

*b

Rear Side

Measuring points:

A

Ground clearance of the center of the front wheel

B

Ground clearance of the center of the front adjusting cam bolt

C

Ground clearance of the center of the rear wheel

D

Ground clearance of the center of the rear lower control arm front side

If the vehicle height is not as specified, adjust the height by pressing down on the vehicle several times to stabilize the suspension.

Standard Vehicle Height (Unloaded Vehicle):

Vehicle Model

Grade

Front (A - B)

Rear (C - D)

GRN280L-GKAGKA

SR5, SR5 Premium

116.7 mm (4.59 in.)

80.7 mm (3.18 in.)

LIMITED

117.2 mm (4.61 in.)

85.4 mm (3.36 in.)

GRN285L-GKAGKA

SR5, SR5 Premium

94.9 mm (3.74 in.)

68.8 mm (2.71 in.)

TRD Off-Road, TRD Off-Road Premium

(w/o KDSS)

95.6 mm (3.76 in.)

69.8 mm (2.75 in.)

TRD Off-Road, TRD Off-Road Premium

(w/ KDSS)

98.2 mm (3.87 in.)

72.1 mm (2.84 in.)

LIMITED

97.6 mm (3.84 in.)

72.5 mm (2.85 in.)

NOTICE:

The standard value shown here is a value that is used for adjusting the wheel alignment and does not indicate the height of an actual vehicle.

3. INSPECT CAMBER, CASTER AND STEERING AXIS INCLINATION

(a) Install a camber-caster-kingpin gauge or place the front wheels on the center of a wheel alignment tester.

Text in Illustration

*1

Wheel Alignment Tester

*2

Gauge


(b) Inspect the camber, caster and steering axis inclination.

Standard Camber Inclination (Unloaded Vehicle):

Vehicle Model

Grade

Camber Inclination

Right-left Difference

GRN280L-GKAGKA

SR5, SR5 Premium

-0°37' +/-30' (-0.62° +/-0.5°)

30' (0.5°) or less

LIMITED

-0°38' +/-30' (-0.63° +/-0.5°)

30' (0.5°) or less

GRN285L-GKAGKA

SR5, SR5 Premium

-0°1' +/-30' (-0.02° +/-0.5°)

30' (0.5°) or less

TRD Off-Road, TRD Off-Road Premium

(w/o KDSS)

-0°3' +/-30' (-0.05° +/-0.5°)

30' (0.5°) or less

TRD Off-Road, TRD Off-Road Premium

(w/ KDSS)

-0°7' +/-30' (-0.12° +/-0.5°)

30' (0.5°) or less

LIMITED

-0°6' +/-30' (-0.10° +/-0.5°)

30' (0.5°) or less

Standard Caster Inclination (Unloaded Vehicle):

Vehicle Model

Grade

Caster Inclination

Right-left Difference

GRN280L-GKAGKA

SR5, SR5 Premium

3°40' +/-30' (3.67° +/-0.5°)

30' (0.5°) or less

LIMITED

3°50' +/-30' (3.83° +/-0.5°)

30' (0.5°) or less

GRN285L-GKAGKA

SR5, SR5 Premium

3°15' +/-30' (3.25° +/-0.5°)

30' (0.5°) or less

TRD Off-Road, TRD Off-Road Premium

(w/o KDSS)

3°16' +/-30' (3.27° +/-0.5°)

30' (0.5°) or less

TRD Off-Road, TRD Off-Road Premium

(w/ KDSS)

3°21' +/-30' (3.35° +/-0.5°)

30' (0.5°) or less

LIMITED

3°22' +/-30' (3.37° +/-0.5°)

30' (0.5°) or less

Standard Steering Axis Inclination (Unloaded Vehicle):

Vehicle Model

Grade

Steering Axis Inclination

GRN280L-GKAGKA

SR5, SR5 Premium

12°42' +/-30' (12.70° +/-0.5°)

LIMITED

12°44' +/-30' (12.73° +/-0.5°)

GRN285L-GKAGKA

SR5, SR5 Premium

12°11' +/-30' (12.18° +/-0.5°)

TRD Off-Road, TRD Off-Road Premium

(w/o KDSS)

12°12' +/-30' (12.20° +/-0.5°)

TRD Off-Road, TRD Off-Road Premium

(w/ KDSS)

12°16' +/-30' (12.27° +/-0.5°)

LIMITED

12°15' +/-30' (12.25° +/-0.5°)

4. ADJUST CAMBER AND CASTER

HINT:

After the camber has been adjusted, inspect the toe-in.

(a) Loosen the front adjusting cam bolt and rear adjusting cam nut.

(b) Turn the front adjusting cam and rear adjusting cam in both directions, and adjust the camber and caster to the center value.

HINT:

  • The camber and caster should be as close as possible to the center value.
  • Adjust the camber and caster within +/-30'.
Text in Illustration

*1

Front Adjusting Cam LH

*2

Front Adjusting Cam RH

*3

Rear Adjusting Cam LH

*4

Rear Adjusting Cam RH

Front

-

-

(c) Read the adjustment chart (example).

Text in Illustration

*1

Caster

*2

Camber

*3

Front Adjusting Cam

*4

Rear Adjusting Cam

*a

Measured Value

*b

Standard Value


(1) Find the wheel alignment standard value applicable for the particular model.

(2) Mark the selected standard value on the adjustment chart.

Standard Value (Reference)

Camber

Caster

0°00' (0.00°)

3°30' (3.50°)

(3) Mark the alignment value measured when the vehicle is unloaded on the adjustment chart.

Measured Value (Reference)

Camber

Caster

-0°20' (-0.33°)

3°20' (3.33°)

(4) As shown in the chart, read the distance from the marked point to 0, and adjust the front and/ or rear adjusting cams accordingly.

Amount to Turn Adjusting Cams (by Gradation)

Front Adjusting Cam

Rear Adjusting Cam

+3

+2

Text in Illustration

*a

Camber

*b

Caster

*c

Front Cam Graduation

*d

Rear Cam Graduation

5. INSPECT TOE-IN

(a) Bounce the vehicle up and down at the corners to stabilize the suspension and inspect the toe-in.

Text in Illustration

Front


Standard Toe-in (Unloaded Vehicle):

Vehicle Model

Grade

Toe-in

GRN280L-GKAGKA

SR5, SR5 Premium

A + B: 0°10' +/-0°9' (0.16° +/-0.15°)

C - D: 2.35 +/-2 mm (0.09 +/-0.08 in.)

LIMITED

A + B: 0°10' +/-0°9' (0.16° +/-0.15°)

C - D: 2.16 +/-2 mm (0.09 +/-0.08 in.)

GRN285L-GKAGKA

SR5, SR5 Premium

A + B: 0°10' +/-0°9' (0.16° +/-0.15°)

C - D: 2.29 +/-2 mm (0.09 +/-0.08 in.)

TRD Off-Road, TRD Off-Road Premium

(w/o KDSS)

A + B: 0°10' +/-0°9' (0.16° +/-0.15°)

C - D: 2.11 +/-2 mm (0.08 +/-0.08 in.)

TRD Off-Road, TRD Off-Road Premium

(w/ KDSS)

A + B: 0°6' +/-0°9' (0.10° +/-0.15°)

C - D: 1.49 +/-2 mm (0.06 +/-0.08 in.)

LIMITED

A + B: 0°8' +/-0°9' (0.14° +/-0.15°)

C - D: 1.60 +/-2 mm (0.06 +/-0.08 in.)

If the toe-in is not within the specified range, adjust it at the rack ends.

6. ADJUST TOE-IN

(a) Detach the rack boot set clips.

(b) Loosen the tie rod end lock nuts.

(c) Turn the right and left rack ends by an equal amount to adjust the toe-in to the center value.

(d) Check that the lengths of the right and left rack ends are approximately the same.


Standard difference:

0 +/-1 mm (0 +/-0.0394 in.) or less

Text in Illustration

*a

Length

Lock Nut

(e) Tighten the tie rod end lock nuts.

Torque:

88 N·m {897 kgf·cm, 65 ft·lbf}

(f) Place the boots on the seats and install the clips.

HINT:

Make sure that the boots are not twisted.

7. INSPECT WHEEL ANGLE

(a) Turn the steering wheel to the left and right full lock positions, and measure the turning angle.

Text in Illustration

*a

Inside

*b

Outside

Front


Standard Wheel Turning Angle (Unloaded Vehicle):

Vehicle Model

Grade

Inside Wheel Angle

Outside Wheel Angle: Reference

GRN280L-GKAGKA

SR5, SR5 Premium

29°48' to 32°48'

(29.80° to 32.80°)

29°33'

(29.55°)

LIMITED

29°47' to 32°47'

(29.78° to 32.78°)

29°31'

(29.52°)

GRN285L-GKAGKA

SR5, SR5 Premium

30°20' to 33°20'

(30.33° to 33.33°)

29°28'

(29.47°)

TRD Off-Road, TRD Off-Road Premium

(w/o KDSS)

30°20' to 33°20'

(30.33° to 33.33°)

29°27'

(29.45°)

TRD Off-Road, TRD Off-Road Premium

(w/ KDSS)

30°17' to 33°17'

(30.28° to 33.28°)

29°23'

(29.38°)

LIMITED

30°18' to 33°18'

(30.30° to 33.30°)

29°24'

(29.40°)

If the right and left inside wheel angles differ from the specified range, check the right and left rack end lengths.

8. PLACE FRONT WHEELS FACING STRAIGHT AHEAD

9. PERFORM YAW RATE SENSOR ZERO POINT CALIBRATION

HINT:

Perform the yaw rate sensor zero point calibration (See page ).


10. PERFORM INITIALIZATION

HINT:

Some systems need to be initialized after the wheel alignment is adjusted (See page ).


Front Wheel Alignment
...

Front Suspension
...

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