Mercedes Benz Truck R 320 BLUETEC Technical S-47_10-30E Date: 090511
Fuel System - Wrong Fuel Usage Correction Procedures
Date: May 11, 2009
Order No.: S-B-47.10/30e
Supersedes: S-B-47.10/30d dated October 1, 2008
Group: 47
Revision History
Revision Date Purpose
e 5/11/09 Repair Instructions Revised
Mercedes Benz Truck R 320 BLUETEC Page d 10/1/08 Applicable Models Updated
c 7/18/08 Additional Models Added
b 9/12/06 Applicable Model / Step 3 and Parts Information Updated
a 9/02/04 Additional Information Pertaining to Biodiesel Fuel
- 8/17/04 Initial issue
SUBJECT:
Model 164.122/125/822/825
Model 211.022/026
Model 251.122/125
Procedure for When Diesel Fuel Tank is Filled with Incorrect Fuel Type
If the above model diesel powered vehicles with a common rail injection system have been refueled with gasoline, kerosene, etc. and/or other
mixtures thereof, follow the steps below to remedy. In addition, biodiesel fuel above 5% (B5) in the fuel tank is not permitted for use in the above
model vehicles. Please follow the procedure below.
Note:
If the fuel tank is filled with the wrong type of fuel this may not be submitted as a warranty claim.
If the engine was NOT started after the fuel tank was filled with the wrong type of fuel, then emptying the tank and cleaning the fuel low-pressure
lines should be enough to resolve the problem.
If the engine was started after the fuel tank was filled with the wrong type of fuel, disconnect the Y-distributor unit (return line high pressure
pump/rail) at the output and with the ignition ON collect the fuel in a clean container. Check fuel for shavings.
If there are no shavings in the injection system and the high pressure pump is not damaged, emptying the fuel tank, cleaning the low pressure lines
and changing the fuel filter should resolve the condition.
If metal shavings are found in the injection system and/or the high pressure pump is damaged, replace the following components to ensure there are
no metal particles in the fuel system. Refer to EPCNet for applicable part number.
a) Fuel Tank
b) Low Pressure fuel pump
c) Fuel Filter
d) High Pressure pump
e) Rail (Including Pressure regulating valve and the rail pressure sensor)
f) High pressure lines and the leak lines
g) Injectors
The low pressure lines need to be thoroughly cleaned.
If there are no shavings in the injection system and the high pressure pump is damaged, the reason for the damaged high pressure pump must be
found and resolved prior to replacing the high pressure pump.
Fuel System - Wrong Fuel Usage Correction Procedures
Date: May 11, 2009
Order No.: S-B-47.10/30e
Supersedes: S-B-47.10/30d dated October 1, 2008
Group: 47
Revision History
Revision Date Purpose
e 5/11/09 Repair Instructions Revised
Mercedes Benz Truck R 320 BLUETEC Page d 10/1/08 Applicable Models Updated
c 7/18/08 Additional Models Added
b 9/12/06 Applicable Model / Step 3 and Parts Information Updated
a 9/02/04 Additional Information Pertaining to Biodiesel Fuel
- 8/17/04 Initial issue
SUBJECT:
Model 164.122/125/822/825
Model 211.022/026
Model 251.122/125
Procedure for When Diesel Fuel Tank is Filled with Incorrect Fuel Type
If the above model diesel powered vehicles with a common rail injection system have been refueled with gasoline, kerosene, etc. and/or other
mixtures thereof, follow the steps below to remedy. In addition, biodiesel fuel above 5% (B5) in the fuel tank is not permitted for use in the above
model vehicles. Please follow the procedure below.
Note:
If the fuel tank is filled with the wrong type of fuel this may not be submitted as a warranty claim.
If the engine was NOT started after the fuel tank was filled with the wrong type of fuel, then emptying the tank and cleaning the fuel low-pressure
lines should be enough to resolve the problem.
If the engine was started after the fuel tank was filled with the wrong type of fuel, disconnect the Y-distributor unit (return line high pressure
pump/rail) at the output and with the ignition ON collect the fuel in a clean container. Check fuel for shavings.
If there are no shavings in the injection system and the high pressure pump is not damaged, emptying the fuel tank, cleaning the low pressure lines
and changing the fuel filter should resolve the condition.
If metal shavings are found in the injection system and/or the high pressure pump is damaged, replace the following components to ensure there are
no metal particles in the fuel system. Refer to EPCNet for applicable part number.
a) Fuel Tank
b) Low Pressure fuel pump
c) Fuel Filter
d) High Pressure pump
e) Rail (Including Pressure regulating valve and the rail pressure sensor)
f) High pressure lines and the leak lines
g) Injectors
The low pressure lines need to be thoroughly cleaned.
If there are no shavings in the injection system and the high pressure pump is damaged, the reason for the damaged high pressure pump must be
found and resolved prior to replacing the high pressure pump.
