Steering gear

Removing

1. Drain the power steering hydraulic fluid.

2. Disconnect a wire from the negative plug of the storage battery.

3. Remove the cross beam.

4 Remove a reception pipe of system of release of the fulfilled gases.

5. Remove the bolt connecting the steering shaft and steering gear shaft (pic. 16.17).



6. Loosen and remove the clamp.

7. Remove the cotter pins and unscrew the nuts securing the pins of the ball joints of the tie rod ends to the steering knuckles. Disconnect the tie rod end from the steering knuckle with the special tool (pic. 16.3).

Warning. Do not completely unscrew the nut securing the ball joint pin of the tie rod end to the steering knuckle. Use a special tool to prevent damage to the threads on the ball joint pin. To prevent falling of the special tool MB991113 or MB990635, fix it with a cord on the front suspension strut.

8. Loosen the clamp and disconnect the return hose.

9. Loosen the clamp and disconnect the pressure hose.

10. Turn away two bolts and remove bracket of fastening of steering transfer.

11. Turn away two bolts and remove bracket of fastening of the case of steering transfer.

12. Remove the steering gear assembly. When removing the steering gear assembly, be careful not to damage the protective covers of the steering gear and tie rod ends.

13. Remove the protective cover assembly. Check for cracks or damage to the rubber parts.

Checking the total torque of the steering gear

1. Secure the steering gear in a vise whose jaws are covered with soft material.

2. Measure the total torque of the steering gear by turning the gear with the special tool (09565-11100) one revolution every 4-6 seconds (pic. 16.18).



Total rotation torque of the steering gear:

• cars with petrol engines: 0.6-1.3 Nm (deviation: 0.4 Nm)
• diesel vehicle: 0.5-1.2 Nm (deviation: 0.4 Nm)

Warning. When fastening the steering gear in a vice, clamp it only at the attachment points. If the steering gear is pinched in other places, the steering gear housing may be deformed or damaged.

Note. Measure the preload at the full travel of the rack.

3. If the total torque of the steering gear drive gear does not meet the required values, first of all, adjust the torque of the plug and repeat the test.

4. If adjusting the torque of the plug does not give positive results, check or replace the rack stop elements.

Checking the resistance to deflection of the steering rod

1. Perform 10 tie rod deflections.

2. Using a dynamometer, measure the force that must be applied to deflect the steering rod (pic. 16.19).



Tie rod deflection force: 6-20 N

3. If the measured value exceeds the nominal value, replace the tie rod assembly.

4. If the measured value is lower than the nominal value and the steering rod turns smoothly and without play, it can be installed on the car.

Checking the dustproof cover of the spherical joint of the tie rod end

1. Pinch the dust cover with your fingers and check for cracks or damage.

2. If the dust cover is cracked or damaged, replace the tie rod end. If the dust cover is cracked or damaged, the ball joint may also be damaged.

Adjustment of the total torque of the steering gear

1. Set the rail to the center position. Tighten the rail stop cover to 15 Nm.

2. In the neutral position, use a special key to turn the gear shaft clockwise one turn in 4-6 seconds (see fig. 16.18). Unscrew the rack stop cover by 30-60°and adjust the torque of the steering gear drive gear to the nominal value.

3. Measure the total torque of the steering gear by turning the gear with the special tool (09565—11100) one revolution every 4-6 seconds (pic. 16.21).



Total rotation torque of the steering gear:

• cars with petrol engines: 0.6-1.3 Nm (deviation: 0.4 Nm)
• a car with a diesel engine; 0.5-1.2 Nm (deviation: 0.4 Nm)

If adjustment cannot be achieved within the specified angle of rotation of the pinion shaft, check or replace the rack stop and rack stop cover parts.

4. After completing the adjustment, tighten the rack stop cap locknut.

Installing the tie rod end

1. Wrap the left and right tie rod ends to the size shown in Figure 16.22 and tighten the lock nuts.

Tie Rod End Ball Joint Dust Boot Replacement

Only if the dust cover is damaged by accident while servicing the vehicle, replace it as follows.

1. Use a screwdriver blade to remove the snap ring and dust cover from the tie rod ball joint.

2. Apply 3M ATD #8661 multipurpose grease to the inside surfaces of the new dust cover.

3. Using the special tool, install the protective boot on the ball joint pin of the tie rod end (pic. 16.23).



4. Pinch the dust cover with your fingers and check for cracks or damage.

Installation

1. Installation is carried out in the reverse order of removal, taking into account the following.

2. Fill the reservoir with fluid up to the base of the oil filter.

3. Bleed the hydraulic drive of the power steering.

4. After setting the wheels to the straight ahead position, check the position of the steering wheel.