50 - Steering Column.pdf - Sam Naprawiam Toyota Corolla E12 2001-2007 ENG up by dunaj2 - j_czaja1

50–1

STEERING COLUMN

–

STEERING

STEERING SYSTEM

PRECAUTION

1. HANDLING PRECAUTIONS ON STEERING SYSTEM

(a) Care must be taken when replacing parts. Incorrect replacement may affect the performance of the

steering system and result in a driving hazard.

2. HANDLING PRECAUTIONS ON SRS AIRBAG SYSTEM

(a) The vehicle is equipped with SRS (Supplemental Restraint System) such as the driver airbag and front

passenger airbag. Failure to carry out service operation in the correct sequence could cause the SRS

to unexpectedly deploy during servicing, possibly leading to a serious accident. Before servicing (in-

cluding removal or installation of parts, inspection or replacement), be sure to read the precautionary

notice for the supplemental restraint system (See page 60–1 ).

5003T–01

2004 COROLLA (RM1037U)

Author:

Date:

1522

50–2

STEERING COLUMN

–

STEERING

PROBLEM SYMPTOMS TABLE

Use the table below to help you find the cause of the problem. The numbers indicate the priority of the likely

cause of the problem. Check each part in the order shown. If necessary, repair or replace these parts.

5002P–02

Symptom

Suspect Area

See page

Hard steering

1. Tires (Improperly inflated)

2. Power steering fluid level (Low)

3. Front wheel alignment (Incorrect)

4. Steering system joints (Worn)

5. Suspension arm ball joints (Worn)

6. Steering column (Binding)

7. Power steering vane pump

8. Power steering gear

28–1

51–3

26–5

–

26–17

–

51–8

51–18

Poor return

1. Tires (Improperly inflated)

2. Front wheel alignment (Incorrect)

3. Steering column (Binding)

4. Power steering gear

28–1

26–5

–

51–18

Excessive play

1. Steering system joints (Worn)

2. Suspension arm ball joints (Worn)

3. Intermediate shaft, Sliding yoke (Worn)

4. Front wheel bearing (Worn)

5. Power steering gear

–

26–17

–

30–17

51–18

Abnormal noise

1. Power steering fluid level (Low)

2. Steering system joints (Worn)

3. Power steering vane pump

4. Power steering gear

51–3

–

51–8

51–18

2004 COROLLA (RM1037U)

Author:

Date:

1523

50–3

STEERING COLUMN

–

STEERING

ON–VEHICLE INSPECTION

5000P–03

1. CHECK STEERING WHEEL FREEPLAY

(a) Stop the vehicle and face the tires straight ahead.

(b) Rock the steering wheel gently up and down by your

hand, check the steering wheel freeplay.

Maximum freeplay: 30 mm (1.18 in.)

F42427

2004 COROLLA (RM1037U)

Author:

Date:

1524

50–4

STEERING COLUMN

–

STEERING

REPAIR

5002Q–02

Steering Wheel

1. STEERING OFF CENTER REPAIR PROCEDURE

(a) Inspect steering wheel off center.

(1) Apply masking tape on the top center of the steering

wheel and steering column upper cover.

(2) Driving the vehicle on a straight line for 100 meters

at a constant speed of 35 mph (56 km/h), and hold

the steering wheel to maintain the course.

Masking Tape

Steering Column

Upper Cover

F16015

Steering Column

Upper Cover

(3) Draw a line on the masking tape as shown in the il-

lustration.

Marked Line

Steering Wheel

Masking

Tape

F16016

Steering Column

Upper Cover

(4) Turn the steering wheel to its straight position.

HINT:

Refer to the upper surface of the steering wheel, steering spoke

and SRS airbag line for the straight position.

(5) Draw a new line on the masking tape or the steering

wheel as shown in the illustration.

(6) Measure the distance between the 2 lines on the

masking tape of the steering wheel.

Marked Line

Steering Wheel

F16017

2004 COROLLA (RM1037U)

Author:

Date:

1525

50–5

STEERING COLUMN

–

STEERING

(7) Convert the measured distance to steering angle.

Measured distance 1 mm (0.04 in.) = Steering angle

approximately 1 deg.

HINT:

Make a note of the steering angle.

(b) Adjust steering angle.

NOTICE:

The adjustment method for steering angle varies depend-

ing on the models. Check whether it is type A or B.

(1) Draw a line on the RH and LH tie rod and rack ends

where it can easily be seen.

(2) Using a paper gauge, measure the distance from

RH and LH tie rod ends to the rack end screws.

HINT:

Measure the RH side and LH side.

Marked Line

Make a note of the measured values.

R00429

F16018

(3) Remove the RH and LH boot clips from the rack

boots.

(4) Loosen the RH and LH lock nuts.

(5) Turn the RH and LH rack end by the same amount

(but in different directions) according to the steering

angle.

1 turn 360 deg. of rack end (1.5 mm (0.059 in.) horizon-

tal movement) – 12 deg. of steering angle.

(6) Tighten the RH and LH lock nuts by the specified

torque.

Torque: 74 N·m (750 kgf·cm, 54 ft

lbf)

NOTICE:

Make sure that the difference in length between RH and LH

tie rod ends and rack end screws are within 1.5 mm (0.059

in.).

(7) Install the RH and LH boot clips.

2004 COROLLA (RM1037U)

Author:

Date:

1526

50 - Steering Column.pdf

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