A/C - Malfunctions/Erratic Operation/Noise

A/C - Malfunctions/Erratic Operation/Noise
Date: April 8, 2008
Order No.: T-B-83.30/111a
Supercedes: T-B-83.30/111 dated February 1, 2008
Group: 83
SUBJECT:
Model 163.154/157/172/174/175
Malfunction in HVAC System Due to Broken Actuator Levers
If you receive customer reports in the above model vehicles with any of the below conditions, the cause may be broken actuator levers between the
stepper motor and the respective air distribution flap.
^ Defroster flap does not function correctly
^ Rear air flap does not function correctly
2000 Mercedes Benz Truck ML 55 AMG (163.174) V8-5.5L (113.981) 329
^ No air to the footwell
^ Malfunction of recirculated air / fresh air flap
^ Noise in the air / heater housing
To resolve, inspect the affected flap for a broken actuator lever and replace as necessary. Replacement actuator levers are available as a spare part. It
is not necessary to replace the stepper motor if the actuator lever is found broken.
Note:
Refer to appropriate documents in WIS Group 83.30 for installation instructions.
Parts Information
Note:
The following allowable labor operations should be used when submitting a warranty claim for this repair. This information has been generated
on April 8, 2008. Please refer to Netstar --> Star TekInfo --> Star Time for the most current labor time allowance.

In Case of Warranty, use the table.