| Location | Explanation | Type | Basic value | Tolerance 1 | Tolerance 2 |
|---|---|---|---|---|---|
| Steering gear to cross member M10 x 45 | Replace screws after each removal. | Tightening torque | 48 ftlb. | ||
| Universal joint (steering shaft) to steering gear M8 x 35 | Replace fit bolt after each removal. | Tightening torque | 17 ftlb. | ||
| Tie rod (axial joint) to steering rack M16 x 1.5 | Tightening torque | 59 ftlb. | |||
| Aluminum tie rod to axial joint (lock nut) M14 x 1.5 | Tightening torque | 37 ftlb. | |||
| Tie rod (ball joint) to wheel carrier (at steering arm) M12 x 1.5 | Tightening torque | 56 ftlb. | |||
| Steering line to upper steering gear (union nut) M10 | Tightening torque | 7.5 ftlb. | |||
| Steering line to lower steering gear (union nut) M10 | Tightening torque | 7.5 ftlb. | |||
| Combination holder for pressure and return lines to engine M6 x 12 | Tightening torque | 7.5 ftlb. | |||
| Pressure and return lines to steering gear (tension shackle) M10 x 20 | Tightening torque | 17 ftlb. | |||
| Threaded connection, plug-in couplings for steering hydraulics M16 x 1.5 (a/f 15) | A/f = width across flats a/f 15 pressure line | Tightening torque | 22 ftlb. | ||
| Threaded connection, plug-in couplings for steering hydraulics M20 x 1.5 (a/f 19) | A/f = width across flats a/f 19 return line | Tightening torque | 30 ftlb. |
| Location | Explanation | Type | Basic value | Tolerance 1 | Tolerance 2 |
|---|---|---|---|---|---|
| Upper universal joint to steering shaft M8 x 35 | Replace fit bolt after each removal. | Tightening torque | 17 ftlb. | ||
| Steering train to upper pedal block M10 x 100 | Tightening torque | 34 ftlb. | |||
| Steering train to lower pedal block (pedal bearing axle in pedal block) | Tightening torque | 6 to 7.5 ftlb. | |||
| Steering train to lower pedal block (locknut pedal bearing axle to pedal block right M8) | Tightening torque | 7.5 ftlb. | |||
| Steering train to lower pedal block (locknut pedal bearing axle to pedal block left M8) | Tightening torque | 34 ftlb. | |||
| Locking-mechanism housing to steering outer tube upper and lower M6 x 18 | Tightening torque | 5.5 ftlb. | |||
| Steering lock to steering train | Tightening torque | 4.5 ftlb. | |||
| Transverse support to retaining frame M6 | Tightening torque | 7.5 ftlb. | |||
| Steering wheel to steering shaft M18 x 26 | Replace internal serration screw after each removal. | Tightening torque | 37 ftlb. | ||
| Tab washer to steering wheel M6 | Tightening torque | 4.5 ftlb. |
Damage to the power-assisted steering is caused by a shortage of oil in the hydraulic system. Even small leaks can cause the fluid to escape and damage the servo pump as a result of the high oil pressure occurring in the hydraulic circuit.
Grunt-like noises that can be heard when the steering is locked, or foam formation in the reservoir indicate a shortage of oil and/or that air has also been sucked in. Before filling the reservoir, any existing leaks must be eliminated on the suction side. Alternatively, the defective part on the pressure side should be replaced.
Only Pentosin CHF 11 S may be used in the reservoir. Pentosin CHF 11 S can be ordered under the following part number
Quantity supplied 1 liter = 000.043.203.33.
Installation Location
The reservoir is located in the engine compartment.
Scheme 1
There are 2 marks on the dipstick located on the cap. There is a "Cold" mark for when the engine is cold --> Cold mark: approx. 20 °C and on the other surface for when the engine is hot, "Hot" --> Hot mark: approx. 80 °C .
Check the fluid level (Pentosin CHF 11 S) when the engine is off and cold --> Cold mark: approx. 20 °C .
1. Start engine and --> duration: approx. 20 s allow to run at idle speed. Switch off engine.
2. Open engine cover. Open reservoir cap.
3. Wipe off the dipstick. Close and then reopen the cap. The fluid level should lie in the hatched area beneath the "Cold" mark (mark = maximum level) at --> Cold mark: approx. 20 °C . Top up with Pentosin if necessary. The upper "Hot" mark is intended for a fluid temperature of --> Hot mark: approx. 80 °C .
Do not add too much Pentosin! The respective marks are for the maximum fluid level at the "COLD" or "HOT" temperature.
If assembly work was performed previously, check fluid level with the engine idling and without operating the steering.
Multiple steering movements (maneuvering) with the engine switched off change the fluid level in the reservoir - fluid level rises. In this case, the engine must be run for at least 20 seconds immediately prior to the fluid level check.
When topping up or filling in Pentosin, make sure that it does not come into contact with the coolant hoses! If coolant hoses come into contact with Pentosin, thoroughly clean them with water IMMEDIATELY! Replace visibly swollen coolant hoses!
With engine idling, turn steering wheel as far as the stop and hold still. The maximum possible line pressure results in this way.
In this position, check all pipe connections for leaks.
Carry out testing for a maximum of --> Period: 10 s . A longer check should always be interrupted by a brief pause after approximately --> Period: 10 s .
1. To fill the whole system after the installation of new steering components or lines or after a substantial loss of hydraulic fluid, briefly start the engine a few times and, when it fires, switch it off again immediately. This procedure causes the fluid level in the reservoir to fall rapidly, so constantly add Pentosin CHF 11 S. The reservoir must not be sucked dry.
2. If the fluid level in the reservoir does not fall any further when the engine is briefly turned over, start the engine and let it run at idling speed.
3. Rapidly turn the steering wheel from full-lock to full-lock several times so that the air can escape from the cylinders. At the end positions of the piston, do not pull the steering wheel with more force than is necessary in order to turn the steering (to prevent unnecessary build-up of pressure initially).
4. Observe fluid level during this procedure. If it continues to fall, add fluid until the level in the reservoir remains constant and no more air bubbles rise in the reservoir when the steering wheel is turned.
5. Correct the fluid level with the engine at idling speed and without moving the steering.
Refer to 27 06 IN External power connection, jump lead starting - as of MY 2005 (All Models).
Refer to 69 58 19 Removing and installing driver's airbag unit - as of MY 2005 (All Models).
| WARNING | Danger of injury and damage to property as a result of incorrect handling of airbag units! Always observe the safety regulations for handling airbag units. Refer to 69 AW Disposal of airbag and belt tensioner units - as of MY 2005 (All Models). In the case of incorrect handling, system faults may occur resulting in the triggering of the airbag or failure to do so. |
> The airbag unit must always be placed so that the airbag opening faces upwards.
> If removed for an extended period, the airbag unit must be kept in a locked place.
> Switch off ignition and leave ignition key inserted (steering must not be locked). Disconnect the battery. Route or isolate ground strap so that all contact with a ground carrier (e. g. body, seat frame) is avoided. Refer to 27 06 IN External power connection, jump lead starting - as of MY 2005 (All Models).
> After the battery is disconnected, always wait for 1 minute before disconnecting the airbag connectors.