NHTSA ID Number: 10075367
Manufacturer Communication Number: IK0900115
TSB/Document Date: 2016-07-07
Summary
SUMMARY TO BE PROVIDED ON A FUTURE DATE.
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IK0900115 - Fan Shaft Failure Diagnostics
Page 5 of 8
Figure 4: Damaged oil pump/gerotor
Step Action
FRONT GEAR TRAIN INSPECTION:
Decision
Yes. Replace damaged gears.
While the front cover is off, inspect remaining gears for damage.
4
No. Proceed to Step 5.
NOTE: It is possible that gear contact to the engine block
has occured. These
engine blocks should be reused, and will not lose performance/longevity. See
Figures 5 and 6 for examples.
Are there any other gears damaged?
Figure 5: Acceptable engine block wear
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IK0900115 - Fan Shaft Failure Diagnostics
Page 6 of 8
Item 1: Gear contact to the engine block
Figure 6: Acceptable engine block wear
Item 1: Gear contact to the engine block
Step Action
MAIN/ROD BEARING REUSE OR REPLACE DETERMINATION:
5
Yes. Replace compromised bearing and
all cap bolts, then proceed to Step 6.
Are main or rod bearings compromised?
(Inspection was done in Step 1)
Step Action
OIL COOLER REPLACE OR REUSE DETERMINATION
6
Decision
No. Replace all cap bolts, then proceed to
Step 6.
Decision
Yes. Replace oil cooler, centrifuge, oil,
and oil filter then proceed to Step 7.
Inspect oil filter.
No. Replace centrifuge, oil, and oil filter,
then proceed to Step 7.
Are there metal shavings in the oil filter? See Figure 7 for an example.
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IK0900115 - Fan Shaft Failure Diagnostics
Page 7 of 8
Figure 7: Oil filter with metal shavings present
Step Action
DETERMINE REPAIR:
7
Is the vehicle being serviced a TransStar and/or does it have a MaxxForce 11
engine?
Step Action
FAN DRIVE RETROFIT:
8
Decision
Yes - TransStar or 11L engine conversion is not needed, replace cooling
fan drive and proceed to Step 9.
No ProStar or PayStar Proceed to
Step 8.
Decision
Yes. Proceed to Step 9.
Reference IK0900105: Retrofiting a Horton VMaster(Stratis) fan drive to Horton 2spd
No. Repeat step.
air operated fan drive.
Was fan drive retrofit and programming successful?
Step Action
VALIDATION:
9
Run engine fan test and inspect for oil leaks.
Decision
Yes. Release truck.
No. See supervisor.
Does the fan test pass and the engine NOT leak oil?
REPAIR STEPS
Replace necessary components per Engine Service Manual.
Master Service Information Site
WARRANTY INFORMATION
Warranty Claim Coding:
Group:
12000 - Engine
Noun:
742 - Fan, shaft and mounting
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IK0900115 - Fan Shaft Failure Diagnostics
Page 8 of 8
Standard Repair Times:
NOTE: For steps 6 and 7, SRT codes can only be applied to the repair if answered "Yes" to each respective question in the Diagnostic section. All other SRT
codes should be applied as necessary.
Step
Description
Chassis
Engine
SRT
Hours
OIL PAN AND/OR GASKET, REPLACE
MAXXFORCE 11/13
N13
MAXXFORCE 11/13
5000/PayStar
N13
MAXXFORCE 11/13
8600/TransStar
N13
R124591U
R12-4591US
T124591U
T12-4591US
Q124591U
Q12-4591US
2.0
2.0
2.0
2.0
2.0
2.0
All Models
All Engines
A12-1213A-20
0.4
ProStar
5000/PayStar
8600/TransStar
ProStar
5000/PayStar
8600/TransStar
MAXXFORCE 11/13, N13
MAXXFORCE 11/13, N13
MAXXFORCE 11/13, N13
MAXXFORCE 11/13, N13
MAXXFORCE 11/13, N13
MAXXFORCE 11/13, N13
A08T1
A08T1
A08T1
R124713U
T124713U
Q124713U
0.3
0.4
0.4
6.0
6.2
6.2
All Models
All Engines
A12-3442
3.2
ProStar
5000/PayStar
MAXXFORCE 11/13, N13
MAXXFORCE 11/13, N13
R124686U
T124686U
4.1
4.1
ProStar
1
1, 2
3
Oil pump bushing and gerotor inspection
4
ENGINE OIL PUMP, REPLACE
6 - CRANKSHAFT MAIN / CONECTING ROD
Yes BEARINGS (I6 ENGINES), REPLACE
7OIL COOLER ASSEMBLY, REPLACE
Yes
8600/TransStar MAXXFORCE 11/13, N13
Q124686U
4.1
7
ACCESS TIME, WITH CENTRIFUGAL OIL
FILTER
All Models
All Engines
A12-4656T-20
0.2
7
ENGINE OIL AND FILTER, CHANGE
All Models
All Engines
A121889U
0.6
ProStar
MaxxForce 11/13, N13
R12-3742U-20
6.5
9
FAN DRIVE RETROFIT, PERFORM
5000/PayStar
MaxxForce 11/13, N13
T12-3742U-20
6.5
OTHER RESOURCES
Master Service Information Site
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Copyright © 2015 Navistar, Inc.
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TSB/Document ID: IK0900115
Replacement Service Bulletin Number:
MFR Communication Date: 2015-08-17
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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