NHTSA ID Number: 10166336
Manufacturer Communication Number: IK1200915
TSB/Document Date: 2019-10-21
Summary
Valve Bridges Falling Off
IK1200915 - Valve Bridges Falling Off
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IK1200915
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Created:
6/7/2013
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8/22/2013
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Author:
Steven
Bell
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Title: Valve Bridges Falling Off
Applies To: EPA 2010 11L & 13L Engines
DESCRIPTION
If idle or drivability misfire conditions exist, with an ACTIVE Cylinder Misfire DTC logged on
vehicle health report, perform the following tests to positively confirm cylinder(s) at fault:
relative compression & multiple cylinder cutout test. If unrelated additional DTC's were stored,
they will either be addressed during or after the following repair procedure using Engine
Diagnostic Manual 1741
REPAIR PROCEDURE
If a valve bridge is found misplaced, 1 of the 2 processes will be followed:
1) 50,000 Total Miles
A) Review Warranty Data
-If a cylinder head has been replaced in previous 20,000 total miles for the
same issue, open a Big Bore Tech Service case file.
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IK1200915 - Valve Bridges Falling Off
Page 2 of 4
B) Order the following parts CRITICAL TRUCK DOWN
-Cylinder Head
-Cylinder Head Removal Kit
-Cylinder Head Gasket (Note: 11 & 13L gaskets are different in Figures 2 and 3
below)
-6 Fuel Injector Seal Kits
C) Remove the Cylinder Head for replacement then perform Piston Protrusion check
as outlined in Engine Service Manual
1682
D) Reuse the Cam Bearings unless they are damaged
TECH TIPS
1) Transfer 6 injector hold down spacer pucks beneath the injector hold downs over to the
new head (Figure 1)
2) Compare new and old head gaskets. An 11L head gasket on a 13L engine will stop the
engine from turning over once the head is torqued down since the bore size is smaller than a
13L Piston.
A) 11L Gasket does NOT have a notch at the RR corner of the cylinder head gasket
(Figure 2)
B) 13L Gasket does have a notch at the RR corner of the cylinder head gasket
(Figure 3)
3) Be sure to properly time the cam gear per the service manual.
Figure 1:
1. Injector Hold Down Spacer
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IK1200915 - Valve Bridges Falling Off
Page 3 of 4
Figure 2:
1. 11L Head Gasket
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IK1200915 - Valve Bridges Falling Off
Page 4 of 4
Figure 3:
1. 13L Head Gasket
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Copyright © 2013 Navistar, Inc.
https://evalue.internationaldelivers.com/service_kb/DocTool/ArticleViewer.aspx?ControlID... 9/3/2013
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TSB/Document ID: IK1200915
Replacement Service Bulletin Number:
MFR Communication Date: 2013-08-22
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ENGINE AND ENGINE COOLING
MFR Component System:
MFR Component Subsystem:
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