Campaign - Power Steering Damper Leaking
FILE:SERVICE: GROUP 00 OF SERVICE INFORMATION BINDER
PARTS: GROUP I OF INFORMATION _ PARTS & ACCESSORIES BINDER
Campaign No. 2000090001
December 2000
TO: ALL MERCEDES-BENZ CENTERS
SUBJECT:
MODELS 215, 220
POWER STEERING DAMPER HYDRAULIC LINE FITTINGS LEAKING
This campaign has been initiated because it has been determined that under certain operating conditions the power steering damper hydraulic line fittings (1 [lower], 2 [upper], Figure 1) may leak.
Effective Serial Number Range
Prior to performing this campaign, the vehicles listed within the chassis end number list shown, must be inspected for possible leaks from the power steering damper line fittings. If either one of the power steering damper line fittings (1 [lower], 2 [upper], Figure 1) are found to be leaking, the complete power steering rack and pinion assembly must be replaced (see procedure).
Should the power steering damper line fittings be found to be without any leakage, please assure the torque on the power steering damper line fittings (1 [lower], 2 [upper], Figure 1) remain in factory specification by carefully following the procedure.
Prior to performing this Service Campaign, please check VMI to insure the vehicle is involved and to determine if the vehicle has been previously repaired.
PROCEDURE
1. Drive affected vehicle onto lift and raise vehicle.
2. Remove center section of the lower noise encapsulation cover (see WIS doc.: AR61.20-P-1105M).
3. Carefully inspect the power steering damper line fittings (1 [lower], 2 [upper], Figure 1) for any fluid leakage. Should any fluid leakage be found, the entire power steering rack and pinion assembly must be replaced. Proceed with Step 4 below, if the assembly is found to be leaking fluid. If the fittings are found to dry of any fluid, continue with Step 5 below.
4. See WIS doc.: AR46.20-P-0600I for procedure to replace power steering rack and pinion assembly. Return assembly to MBUSA, only if the assembly was found to be leaking.
5. Assemble torque wrench as shown in Figure 2, using the following tools: 1/2 inch extension of suitable length, 210 589 01 16 00 special extension piece, and 912 589 01 03 00 modified (crowfoot) boxed end wrench.
NOTE:
Observe the position of both the special extension piece and the modified boxed end wrench as seen in Figure 2, when assembling the torque wrench.
Set torque wrench to 8ONm.
6. Place the assembled torque wrench onto the upper power steering damper line filling (2 [upper], Figure 1) and push torque wrench in direction C" (C, Figure 3) to check/retorque the upper line fitting. The top of Figure 3 is the front of the vehicle.
NOTE:
When using torque wrench for step 6 above, counterhold (B, Figure 3) with left hand and use right hand to apply torque in direction C. It is absolutely critical to tighten the damper line fitting, but never to loosen it.
7. Next in order to check the lower power steering damper line fitting (1, [lower], Figure 1), assemble the torque wrench as shown in Figure 4.
NOTE:
Observe the position of both the special extension piece and the modified boxed end wrench as seen in Figure 4, when assembling the torque wrench.
Set torque wrench to 8ONm.
8. Place the assembled torque wrench onto the lower power steering damper line fitting (Figure 5), and pull the torque wrench in direction "A" to check/retorque the lower power steering damper line fitting. It is absolutely critical to tighten the damper line fitting, but never to loosen it.
The top of Figure 5 is the front of the vehicle.
9. After checking/retorqueing, re-assemble the removed items in reverse order.
Parts Information
Warranty Information
Special Tools
Note:
For all rack replacements - before and after alignment reading hard copy must be taken and kept with the vehicle file.
Please retain racks for return to MBUSA for testing and inspection. Claims where racks are not returned when requested will be debited.