Campaign - Replacement Of Engine Vent Hoses: Overview
FILE:SERVICE: GROUP 00 OF SERVICE INFORMATION BINDER
PARTS: GROUP I OF INFORMATION _ PARTS & ACCESSORIES BINDER
Campaign No. 2008020002, August 2008
Revision Date Purpose
B 8/26/08 Work procedure revised to indicate proper positioning of hose clamp
A 03/14/08 Addition of customer reimbursement information
- 03/07/08 Initial issue
TO: ALL MERCEDES-BENZ CENTERS
SUBJECT:
MODEL 203.040/740, MODEL YEARS 2003 - 2005
REPLACE ENGINE VENT HOSES
This Service Campaign has been initiated because Daimler AG has determined that the engine vent hose on subject vehicles may not conform to specifications. Cracks may develop in the vent hose over time and in the worst case result in a rough running engine. Dealers will replace the engine vent hose on the affected vehicles during the next workshop visit.
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.
Please note that Recall and Service Campaigns do not expire and may also be performed on a vehicle with a vehicle status indicator.
Approximately 78,497 vehicles are affected.
Procedure
1. Remove supercharger/compressor (AR09.50-P-4705QK).
Note (regarding referenced WIS document):
^ Special tool 001 589 81 09 00 (flexible head wrench set) is not available from the Mercedes-Benz Special Tools program. Flexhead E10 torx socket, which is commercially available from your local tool vendor (e.g., Snap-On etc), can be used.
2. Replace bottom partial load vent hoses (A, Figure 1) along with check valve (B):
Note:
Ensure check valve (B) is properly installed: Arrows (Figure 1) must point towards cylinder head.
3. Replace top partial load vent hose (A, Figure 2):
Note:
^ Ensure that installation position of top partial vent hose (A) is correct: Hose (A) is not kinked or pinched.
^ Do not install hose clamp (arrow, Figure 2) on collar of valve or hose will be damaged (refer to Figure 3 for proper positioning of "click" type hose clamp).
^ Do not use worm/screw type hose clamps: Use only new "click" type hose clamp (arrow, Figure 2) where hose (A) connects to nozzle.
^ Reuse spring type hose clamp (arrow, Figure 4) where hose (A) connects to intake manifold fitting (B).
4. Replace remaining vent hose (A, Figure 5).
Note:
Connect smaller end of vent hose (A) to fitting under air cleaner assembly (B) before securing air cleaner to engine. The opposite end is connected to fitting (arrow) on valve cover.
5. Reinstall remaining components in reverse order.
Note (regarding referenced WIS documents):
^ Fuel injector O-rings must be replaced.
^ Apply tire mounting lubricant (shop supply) to air cleaner mounts on engine.
6. Read out fault memory and erase.
Primary 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.
^ The following allowable labor operation should be used when submitting a warranty claim for this repair:
Warranty Information