Cooling System - Coolant Staining Around Water Pump Area

19 12 04

December 6, 2012

2021142 *Superseded by T.B. V190903 dated July 16, 2009 to add additional model year applicability.*





Vehicle Information

Condition

Coolant Pump Replacement due to Mistaken Coolant Leak

Technical Background

Coolant staining around coolant pump area may cause incorrect diagnosis and unnecessary replacement of coolant pump.

Production Solution

No production change required.

Service

Upon inspection, a small coolant spot, or coolant staining is acceptable around coolant pump.





Example

^ Only suspect coolant pump leak, and consider replacement if the following conditions occur:
^ Vehicle arrives with visible coolant leak.
^ Vehicle arrives with coolant light ON.
^ Vehicle arrives with the temperature warning at its highest level.
^ Pressure drops in the coolant pump during Pressure test, see Group 19, Cooling System, Checking for Leaks in ElsaWeb.

Warranty
Information Only.

Required Parts and Tools

No Special Parts required.

No Special Tools required.

Additional Information

All part and service references provided in this Technical Bulletin are subject to change and/or removal.
Always check with your Parts Dept. and Repair Manuals for the latest information.