NHTSA ID Number: 10115301
Manufacturer Communication Number: IK0900115
TSB/Document Date: 2017-08-16
Summary
Fan Shaft Failure Diagnostics with feature code 12THX (Viscous Fan Drive)
IK0900115 - Fan Shaft Failure Diagnostics
Page 1 of 11
Countries:
RUSSIA, AUSTRALIA, BAHAMAS, BOLIVIA,
BRAZIL, BELIZE, CANADA, CHILE, TAIWAN,
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REPUBLIC, ECUADOR, EL SALVADOR,
TRINIDAD AND TOBAGO, UNITED STATES,
Document
URUGUAY, VENEZUELA, MEXICO, ARUBA,
IK0900115
NICARAGUA, PERU, PUERTO RICO, Curaçao, ID:
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HONDURAS, JAMAICA, KOREA, SOUTH
KOREA, NEW ZEALAND, PANAMA, SOUTH
AFRICA
Availability: ISIS, FleetISIS
Revision: 5
Major
System:
COOLING
Created:
Current
Language:
English
Last
1/13/2016
Modified:
Other
NONE
Languages:
Viewed:
Author:
7/9/2015
Alex
Buzgau
2457
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Title : Fan Shaft Failure Diagnostics
Applies To : 11/13L ProStar, PayStar, and TransStar with feature code 12THX (Viscous Fan Drive)
CHANGE LOG
1/12/2016 - Revised steps to follow a more logical order. Updated SRT table. Changed upper limit spec for shaft end play to 3mm.
11/20/2015 - Adjusting Article to reflect previous author change.
11/4/2015 - Revised Step 3 to include info on block scoring behind oil pump and gear end play
11/2/2015 - Added tolerance info under "symptoms", re ordered steps in "diagnostics" section
08/17/2015 - Initial Article Release
DESCRIPTION
This document is intended to supplement the fan drive conversion iKNow IK0900105: Horton fan drive. In the event of a fan
shaft failure, the preliminary inspection steps below MUST be completed to eliminate customer downtime & dissatisfaction.
SYMPTOMS
Customer Observations or Concerns:
Oil loss
Abnormal Engine Noise
Loss of engine oil pressure
Coolant loss
Tech Observations or Concerns:
Oil leak coming from front of engine
Broken fan blade(s), shroud, shaft
Damaged radiator
Coolant leak
NOTE: there is a tolerance for end play on the fan shaft (going in and out of the front of the engine). Expected end play
can be anywhere from 0.2mm to 3mm. 3mm is the upper limit for service.
SPECIAL TOOLS / SOFTWARE
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IK0900115 - Fan Shaft Failure Diagnostics
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Note: Some of these tools might not be used depending on the necessary repairs. This is just a list of all possible tools needed.
See Diagnostic Steps for more details on which repairs must be performed.
Tool Description
Tool Number
Air and Fuel Cap and Plug Kit
ZTSE4891
Seal Installer (Crossover Tube Seal)
ZTSE6046
Extension Tube Small Installer
ZTSE6047
Front Crankshaft Seal Installer
ZTSE4873
ZTSE4913
55MM Fan Clutch Impact Wrench
KL 5013 NAV
Coolant Management Tool
KL 5007 NAV
Extension Tube Installer
ZTSE6043
Extension Tube Installer Large
ZTSE6051-1
Extension Tube Installer Small
ZTSE60512
SERVICE PARTS INFORMATION
Only replace these parts AS NEEDED. See Diagnostic Steps for more information.
Kit Description
Part Number Qty Notes
KIT, FAN DRIVE, RETROFIT 2
SPEED
2514165C94
1
MaxxForce 11/13 and N13
KIT, BELT DRIVEN FAN RETROFIT
2515591C91
Kit used for
chassis side
1
installation
only
MaxxForce 11/13 and N13
BEARING SET ASM MAIN
STANDARD
7092910C92
1
MaxxForce 11/13 and N13
BEARING KIT, CONNECTING ROD
NORMAL
3004714C91
6
MaxxForce 11/13 and N13
BOLT, HEX COLLAR
3003213C1
14 Main cap bolts MaxxForce 11/13 and N13
SCREW
62904900079
12 Rod Cap Bolts MaxxForce 11/13 and N13
KIT,OIL PUMP13L
3007654C95
1
MaxxForce 13 and N13
KIT,OIL PUMP11L
3007653C96
1
MaxxForce 11
FILTER CENTRIFUGE OIL KIT
2606467C92
1
MaxxForce 11/13 (Note: MF11 may or may not
have this option)
KIT OIL COOLER W/SEALS
3007508C92
1
MaxxForce 11/13 and N13
DIAGNOSTIC STEPS
https://evalue.internationaldelivers.com/service_kb/DocTool/ArticleViewer.aspx?ControlID... 2/1/2016
IK0900115 - Fan Shaft Failure Diagnostics
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The following steps will help determine what parts must be replaced and whether or not the engine has experienced irrepairable
damage. Follow the diagnostic steps first and then perform all necessary repairs once all steps are completed.
Step Action
INITIAL CHECKS:
1
Decision
Yes: Proceed to Step 2.
No:
Have any of the following occured?
1. Metal shavings in the oil. Both the oil and oil filter should be checked for this. ProStar/PayStar models: proceed to
See Figure 1 for an example.
Step 8.
2. Complete loss of oil.
TranStar models: replace the fan drive.
3. Multiple fan shaft failures (i.e. this is not the first occurrence of the fan shaft
failing on this vehicle.)
Figure 1: Oil filter with metal shavings present
Step Action
MAIN AND ROD BEARING INSPECTION:
Decision
A. Yes
B. Yes
Drop oil pan and inspect each main and rod bearing and journal, one by one.
A. Do all bearings meet reuse guideline?
B. Are journals free from defects?
2
Reinstall bearings and install
new main and rod cap bolts,
then proceed to Step 3.
A. No
B. Yes
See Figures 2 and 3 for examples.
Replace damaged bearings and install
new main and rod cap bolts, then
proceed to Step 3.
A. Either Yes or No
B. No
Create iApproval form for an engine
replacement, continue to step 6.
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IK0900115 - Fan Shaft Failure Diagnostics
Page 4 of 11
Figure 2: Good bearing - reusable
Figure 3: Unusable Bearings
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IK0900115 - Fan Shaft Failure Diagnostics
Step Action
Page 5 of 11
Decision
OIL PUMP BUSHING/BEARING INSPECTION:
A. Yes
B. No
Inspect oil pump bushing/bearing for misaligned oil supply hole or damaged
bearing.
ProStar/PayStar models: proceed to
Step 4.
TranStar models: proceed to Step 5.
A. Is oil supply hole correctly aligned?
B. Is bushing/geartrain damaged?
A. Yes
B. Yes
3
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TSB/Document ID: IK0900115
Replacement Service Bulletin Number:
MFR Communication Date: 2016-01-13
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: EQUIPMENT ADAPTIVE/MOBILITY
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