<TABLE border=3 cellSpacing=0 cellPadding=3 width="96%" itxtNodeId="32" itxtHarvested="0"><TBODY itxtNodeId="36" itxtHarvested="0"><TR itxtNodeId="38" itxtHarvested="0"><TD class=VERTCENT bg*************** width="25%" align=center itxtNodeId="42" itxtHarvested="0">TSB
11-1-7
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• 6.4L DIESEL ENGINES - RADIATOR LEAK DUE TO HYPER-EXTENDED BYPASS THERMOSTAT

</TD></TR><TR itxtNodeId="37" itxtHarvested="0"><TD bgColor=#0000ff colSpan=2 itxtNodeId="48" itxtHarvested="0">[************]Publication Date: January 19, 2011[/COLOR]</TD></TR></TBODY></TABLE>
<TABLE border=0 itxtNodeId="30" itxtHarvested="0"><TBODY itxtNodeId="51" itxtHarvested="0"><TR itxtNodeId="52" itxtHarvested="0"><TD width=230 itxtNodeId="54" itxtHarvested="0">FORD:
</TD><TD itxtNodeId="53" itxtHarvested="0">2008-2010 F-250, F-350, F-450, F-550</TD></TR></TBODY></TABLE>


This article supersedes TSB 10-17-9 to update the Service Procedure. ISSUE:

Some 2008-2010 F-Super Duty vehicles equipped with a 6.4L dieselengine may experience an external coolant leak at the radiator. This may be caused by a hyper-extended thermostat. If the bypass thermostat hyper-extends, it causes the primary thermostat to oscillate. This oscillation causes thermal spikes throughout the cooling system and stress on the radiator tubes.
ACTION:

Follow the Service Procedure steps to correct the condition.
SERVICE PROCEDURE

1. [*]

<TABLE border=1 cellSpacing=0 cellPadding=3 itxtNodeId="17" itxtHarvested="0"><TBODY itxtNodeId="96" itxtHarvested="0"><TR itxtNodeId="99" itxtHarvested="0"><TH align=center itxtNodeId="101" itxtHarvested="0">PART NUMBER</TH><TH align=center itxtNodeId="100" itxtHarvested="0">PART NAME</TH></TR><TR itxtNodeId="98" itxtHarvested="0"><TD class=NOBOTTOMBORDER align=left itxtNodeId="103" itxtHarvested="0">8C3Z-8575-D</TD><TD class=NOBOTTOMBORDER align=left itxtNodeId="102" itxtHarvested="0">Thermostat Assembly</TD></TR><TR itxtNodeId="97" itxtHarvested="0"><TD class=NOBORDER align=left itxtNodeId="105" itxtHarvested="0">8C3Z-8009-B</TD><TD class=NOBORDER align=left itxtNodeId="104" itxtHarvested="0">Radiator Assembly</TD></TR></TBODY></TABLE>

WARRANTY STATUS:

Eligible Under Provisions Of New Vehicle Limited Warranty Coverage
IMPORTANT: Warranty coverage limits/policies are not altered by a TSB. Warranty coverage limits are determined by the identified causal part.
<TABLE border=1 cellSpacing=0 cellPadding=3 itxtNodeId="13" itxtHarvested="0"><TBODY itxtNodeId="107" itxtHarvested="0"><TR itxtNodeId="109" itxtHarvested="0"><TH align=center itxtNodeId="112" itxtHarvested="0">OPERATION</TH><TH align=center itxtNodeId="111" itxtHarvested="0">DESCRIPTION</TH><TH align=center itxtNodeId="110" itxtHarvested="0">TIME</TH></TR><TR itxtNodeId="108" itxtHarvested="0"><TD class=NOBOTTOMBORDER align=left itxtNodeId="115" itxtHarvested="0">110107A</TD><TD class=NOBOTTOMBORDER align=left itxtNodeId="114" itxtHarvested="0">2008-2010 F-Super Duty Remove Radiator and Thermostats, Inspect Thermostats For Hyper-Extension, Defective, Replace Both Radiator and Thermostats (Do Not Use With Any Other Labor Operation)</TD><TD class=NOBOTTOMBORDER align=left itxtNodeId="113" itxtHarvested="0">3.2 Hrs.</TD></TR></TBODY></TABLE>
DEALER CODING

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<HR itxtNodeId="10">NOTE: The information in Technical Service Bulletins is intended for use by trained, professional technicians with the knowledge, tools, and equipment to do the job properly and safely. It informs these technicians of conditions that may occur on some vehicles, or provides information that could assist in proper vehicle service. The procedures should not be performed by "do-it-yourselfers". Do not assume that a condition described affects your car or truck. Contact a Ford, Lincoln, or Mercury dealership to determine whether the Bulletin applies to your vehicle. Warranty Policy and Extended Service Plan documentation determine Warranty and/or Extended Service Plan coverage unless stated otherwise in the TSB article. The information in this Technical Service Bulletin (TSB) was current at the time of printing. Ford Motor Company reserves the right to supercede this information with updates. The most recent information is available through Ford Motor Company's on-line technical resources.
Copyright © 2011 Ford Motor Company