Steering Gear, Replacement

Steering Gear, Replacement

Special Tools: 999 5716, 999 5259, 999 5460

NOTE:
- Make sure that the front wheels are in the straight ahead position. In addition, lock the steering wheel with the steering column lock when the tie rod and steering column universal joint are removed. This must be done to prevent the SRS contact roller from reaching its end position.
- Raise the car by the front of the sills so that the subframe's rear mounting points become accessible and can be removed.

Removing the steering gear







- Fit yokes 999 5716-21 and 999 5716-1 and lifting hooks 999 5460-21.
- Lift the engine slightly so take the weight off the engine mountings.







- Remove
- the front wheels.
- the tie rod ends from the tie rods. Use puller 999 5259







- Measure on one side the length of the tie rod in relation to the steering gear housing.
- Note the length.







- Remove the bracket and clamps for the oil pipes at front and rear edges.







- Remove the five nuts securing the steering gear to the subframe.







- Remove the plastic nut securing the lug in the RH fender liner and bend the lug aside.
- Remove the RH engine mounting retaining bolts

- Position an engine lift at the rear of the subframe.







- Remove
- on both sides the four bolts securing the subframe brackets to the body.
- the two bolts together with the brackets and washers.

- Remove the subframe's front bolts 10 - 15 mm.
- Lower the subframe at the rear. Make sure that the steering gear bolts come away from the frame. Remove the engine lift.
- Remove the engine lift.
- Place an oil receptacle under the steering gear and detach the oil pipes from the steering gear.

- Remove
- the retaining bolt for the steering column universal joint. Then press the universal joint up and away from the steering gear.
- the bolt securing the steering gear to the rear engine mounting.

- Lift out the steering gear to the left.
- Fitting the steering gear

NOTE: When changing the steering gear and the bracket for the middle attachment point: Do not tighten the bracket retaining bolt just yet.







- Transfer the heat shield.
- Transfer the bracket for the middle attachment point.
- Fit protective plugs in the pipe couplings.







- Check that the tie rod is in the same position as when removed.







- Lift the steering gear into place from the left.
- Suspend the steering gear from the rear engine mounting.
- Hold up the steering gear so that it hangs straight in relation to the frame. Tighten the engine mounting bolt to 50 Nm.







- Align and attach the steering gear to the steering column universal joint.
- Fit a new locknut on the steering column universal joint. Tighten to 20 Nm.
- Fit the locking eyebolt.
- Attach the oil pipes loosely to the steering gear. Use new O-rings.
- Fit the front bracket for the oil pipes (loosely).
- Line up the pipes with the bracket on the steering gear. Tighten the oil pipes in the steering gear to 25 Nm.







- Press the subframe up at the rear. Use an engine lift. Fit the steering gear retaining bolts in the frame at the same time.
- Fit new bolts loosely in the subframe.
- Move the engine lift over to the front of the frame and change the frame's front retaining bolts. Do not tighten just yet.
- First tighten the bolts on the LH side of the subframe to 105 Nm and then angle tighten 120 Degrees.
- Now tighten the bolts on the RH side by the same amount as on the LH side.
- Finally, tighten the bracket retaining bolts on both sides to 50 Nm.







- Tighten
- the steering gear to 50 Nm. Use new nuts.
- the bolt securing the steering gear's middle attachment point to 80 Nm.







- Fit new bolts in the RH engine mounting. Tighten to 35 Nm and angle tighten 90 degrees.
- Bend back the lug in the fender liner and fit the plastic nut.







- Fit
- the tie rods to the steering arms. Use new nuts.
- Tighten to 70 Nm.
- the wheels.

- Lubricate the hub guide for the wheel with rust inhibitor, part number 1161030-0.
- Fit the bolts and tighten loosely. Then tighten in crosswise sequence to 110 Nm.

NOTE: See specifications "Wheels and hubs, front suspension".







- Fill the servo reservoir with oil and bleed the system.
- Oil grade
- Turn the steering wheel from lock to lock repeatedly. Top off with oil as necessary.
- Lower the car.
- Apply the parking brake. Start the engine. Check the oil level while bleeding the system as described below.

A. Turn the steering wheel slowly to the right, hold it at full lock for 10 seconds.
B. Turn the steering wheel slowly to the left, hold it at full lock for 10 seconds

Repeat steps A and B 20 times. Move the car after 10 times to avoid damaging the tires.

- Check toe-in. Toe-in.