Sprinter 3500 L5-2.7L DSL Turbo (2004)
Crankshaft: Technical Service Bulletins
Diesel Engine - Crankshaft/Main Bearing Replacement
NUMBER: 09-003-06
GROUP: Engine
DATE: February 25, 2006
SUBJECT:
Crankshaft Replacement Policy Change And Main Bearing Part Number Information
OVERVIEW:
This bulletin provides information to determine when to replace the crankshaft, which is a change in the "repair versus replacement" policy for Sprinter
vehicles. Furthermore it provides a procedure to determine which main bearings shells to use when replacing the crankshaft.
MODELS:
2002 - 2006
(VA)
Sprinter
DISCUSSION:
Repairing the engine with a new crankshaft is the preferred remedy when a complete engine assembly replacement is not required.
NOTE:
If the cost to repair the engine with a new crankshaft exceeds 70% of the cost to replace the engine assembly (parts with mark-up and labor), you
must replace the assembly. This is commonly referred to as the "70% Rule".
NOTE:
The main bearings cannot be determined until the replacement crankshaft is received at the dealership. The markings on the front of the replacement
crankshaft will dictate which main bearing part numbers to order for the main bearing caps.
The information outlined below describes how to determine which main bearing shells are needed for the crankshaft main bearings. The connecting rod
bearings will always be the same size and part number.
PARTS DETERMINATION - MAIN BEARINGS:
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The engine block and main bearing caps may have different bearing shell sizes, since each is determined independently.
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The main bearing shell located in the engine block is determined by the markings on the engine block.
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The main bearing shell located in the main bearing cap is determined by markings on front of the crankshaft.
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There are 5 different main bearing shell part numbers. Each part number is a different thickness. Two of the part numbers can only be used for the
main bearing cap.
^
The bearing shells are distinguished by reference colors, located on the back side of the bearing. Blue is the thinnest and violet is the thickest.
