Campaign - A/T Pilot Bushing Replacement: Overview

FILE:
SERVICE: GROUP 00 OF SERVICE INFORMATION BINDER
PARTS: GROUP I OF INFORMATION _ PARTS & ACCESSORIES BINDER

Campaign No. 2007030002

April, 2007

TO: ALL MERCEDES-BENZ CENTERS

SUBJECT:
MODELS 216, 221, 230

MODEL YEAR 2007

REPLACE TRANSMISSION PILOT BUSHING AT ELECTROHYDRAULIC CONTROL MODULE (722.6 TRANSMISSION)

This service campaign has been initiated because DCAG has determined that on affected vehicles a component of the automatic transmission, namely the electrohydraulic control module pilot bushing, may have been installed with a seal ring that does not meet specifications. This may cause a small transmission oil leak to occur. Dealer will replace the electrohydraulic control module pilot bushing.

Prior to performing this Service Campaign:

^ Please check VMI to determine if the vehicle is involved in the Campaign and if it has been previously repaired.

^ Please review the entire Service Campaign bulletin and follow the procedure steps exactly as described.

Shown in this bulletin is a sample copy of a letter which owners of the affected vehicles will receive.

Approximately 2,786 vehicles are affected.

Procedure

CAUTION!
Ensure the temperature of the transmission oil is not higher than 50°C prior to starting repairs.

Note:
If the vehicle has not been operated in a while, run the engine to fill the torque converter with transmission fluid to reduce the amount of fluid that will run out when the pilot bushing is removed.

1. Remove bottom rear engine compartment paneling.





2. Remove heat shield (arrow, Figure 1).

3. Disconnect electrical connector at transmission.





4. Remove pilot bushing mounting bolt as shown in Figure 2; remove pilot bushing (A, Figures 1 and 2).

Note:
When removing the pilot bushing, catch any transmission fluid that might leak out.

5. Install new pilot bushing and reassemble in reverse order.

^ Torque pilot bushing mounting bolt to 3 Nm.

^ Torque heat shield bolt to 6 Nm.

6. Reinstall underbody paneling.

Note:
Ensure the transmission is cold (approx. 25°C) prior to performing step 7.





7. Remove breakaway locking tab from dipstick tube cap and check fluid level; the fluid level must be between the min and max marks (A, Figure 3).

^ Refill transmission fluid to correct level.

^ Install new locking tab.





Special Tools





Parts Information

Note:
^ Please be aware that only the part number(s) referenced in the Campaign Bulletin is/are approved for use to repair the vehicle. Repairs performed using any other part(s) will not have been performed in accordance with the campaign. Accordingly, warranty claims submitted with reference to an improper part number(s) will be denied.

^ Please note that the information in the most current versions of EPC and StarTime supersedes the parts and warranty information in the Campaign Bulletin.

^ The following allowable labor operation should be used when submitting a warranty claim for this repair:





Warranty Information