NHTSA ID Number: 10115408
Manufacturer Communication Number: IK1201012
TSB/Document Date: 2017-08-16
Summary
SPN 731 FMI 16 Knock Detected: Cylinder Acceleration above Normal
Decision
Review for mis-machined flywheel
Yes. Proceed to Step 6.
Vehicle build dates within 8/1/2011 and 11/1/2011 are subject to a possible flywheel machining
issue.
No. Proceed to Step 7.
Is the vehicle build date with in this range?
Step Action
6
Decision
Check flywheel timing
Yes. Proceed to Step 7.
Reference "Special Tools" for instructions on how build the Flywheel Timing Tool.
No. Replace the flywheel.
Reference "Test Procedures," Flywheel Timing Procedure for timing mark inspection instructions
Once repairs are complete proceed
to Step 8.
Are the flywheel timing marks correct per the tool?
Step Action
Decision
Perform cylinder balance testing
Yes. Diagnostics complete
Reference Test Procedures > Cylinder Balance Procedure for instructions.
No. Test for an internal engine issue
Possible causes:
Are all the Crankshaft Angular Velocity values running close together?
• Valve Adjustment out of Spec.
• Sticking Intake Valves
(reference Induction Cleaning
Procedure in the Diagnostic
Manual)
• Internal engine loss of
compression
7
After repairs are complete proceed
to Step 8.
Step Action
Perform flywheel relearn procedure
8
• Follow iKnow Article IK1200646 for procedure.
• Once completed retest for the fault code.
Decision
Yes. Proceed to Step 7.
No. Diagnostics complete.
Did the fault code return?
TEST PROCEDURES
Cylinder Balance Procedure:
1. Open EST (Engine Service Tool)
2. Connect to the engine
3. Go to Test/ KOER Test/ Cylinder Balance
4. Start the Engine and allow the Cylinder (x) Crankshaft Angular Velocity Data Values to stabilize.
5. Slowly accelerate the engine up to 1500 rpm keeping Actual Engine Torque (#2 in example below) below 150 lb/ft. Run engine at 1500 RPM for 5
min.
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IK1201012 SPN 731 FMI 16 Knock Detected: Cylinder Acceleration above Normal
Page 5 of 7
6. Referencing the values (#1 in example below). Locate the Cylinder (s) that are running out side or higher than the rest.
Example:
•
•
•
•
•
•
Cylinder 1 - Value: 0.7
Cylinder 2 - Value: -0.1
Cylinder 3 - Value: -0.2
Cylinder 4 - Value: -0.2
Cylinder 5 - Value: -0.2
Cylinder 6 - Value: -0.2
Cylinder 1 is reading the highest and is not consistent with other 5 cylinders that is the suspected cylinder causing the fault.
Figure 5. Screen Shot of Cylinder Balance Session
Item 1: Cylinder (x) Crankshaft Angular Velocity Data - Values
Item 2: Actual Engine Torque Value
Flywheel Timing Procedure:
1. Use a 7mm socket to remove the two screws securing the flywheel housing cover
2. Remove the plastic cover (use caution to ensure plastic tabs are not damaged)
3. Rotate the flywheel so the timing mark is visible in the window
4. Place the gauge (with marked edge towards ring gear) and pin in hole closest to the timing mark (bottom, next to timing hole).
5. Verify the timing mark aligns with the mark on the tool
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IK1201012 SPN 731 FMI 16 Knock Detected: Cylinder Acceleration above Normal
Page 6 of 7
Figure 2: Flywheel Timing Tool Installed
Note: Tool is angled away to show flywheel timing mark, relative to the tool mark.
WARRANTY INFORMATION
Warranty Claim Coding:
Step 1
Group:
12000 - Engine
Noun:
135 - Twin Turbo (High Pressure)
Steps 25
Group:
12000 - Engine
Noun:
Code to repairs made
Standard Repair Times:
Step
1/2
1
Description
Chassis
Engine
SRT
ProStar+ 113/122
2010+ MF 11/13, 2013+ N13
R122117U
Transtar (8600)
2010+ MF 11/13, 2013+ N13
Q122117U
WorkStar
2010+ MF 11/13, 2013+ N13
N122117U
PayStar (5000)
2010+ MF 11/13, 2013+ N13
T122117U
ProStar+ 113/122
2010+ MF 11/13, 2013+ N13
R12-6135U-21
Visual Inspection
Turbo Center Section
(Cartridge) Removal
and Installation
Hours
0.3
Turbocharger HP
Center Section,
Replace
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IK1201012 SPN 731 FMI 16 Knock Detected: Cylinder Acceleration above Normal
Transtar (8600)
2010+ MF 11/13, 2013+ N13
Q12-6135U-21
WorkStar
2010+ MF 11/13, 2013+ N13
N12-6135U-21
PayStar (5000)
2010+ MF 11/13, 2013+ N13
T12-6135U-21
Page 7 of 7
1
CAC Cleaning
All
2010+ MF 11/13, 2013+ N13
A09-3925A
CAC Cleaning
1
Calibration Update
All
2010+ MF 11/13, 2013+ N13
A12-3510A-20
ECM, Program
Horizontal Aftertreatment
2010+ MF 11/13, 2013+ N13
A12-4901
1
DOC/DPF Removal and
Inspection
DOC, Replace
Vertical Aftertreament
2010+ MF 11/13, 2013+ N13
A12-4903
Flywheel Timing Tool
Fabrication
All
2010+ MF 11/13, 2013+ N13
T-Time
0.5
5
Flywheel Timing Check
All
2010+ MF 11/13, 2013+ N13
TTime
0.5
6/7
Electronic Service Tool
Testing
All
2010+ MF 11/13, 2013+ N13
TTime
0.3
Tool
SRT Manual
OTHER RESOURCES
2010 MaxxForce 11/13 Resource Center (IK1200548)
2010 MaxxForce 11/13 Diagnostic Manual
2010 MaxxForce 11/13 Service Manual
Feedback Information
Hide Details
Viewed:
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Helpful:
63
Not Helpful: 23
Staff
ID
Client
ID
DYYKKF1
Comments
You received the following feedback From: dyykkf1 - Kurt Fracalossi Email Address: [email protected] Job Classification: SE003, Service Manager Dealer:
TRI-COUNTY INTL TRUCKS Feedback: at the end of diag for this article, the link fro relearn does not come up. ik1200646 - nothing there.
Created
Date
12/7/2015
2:48:29 PM
Copyright © 2016 Navistar
, Inc.
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TSB/Document ID: IK1201012
Replacement Service Bulletin Number:
MFR Communication Date: 2015-12-04
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: UNKNOWN OR OTHER
MFR Component System:
MFR Component Subsystem:
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