NHTSA ID Number: 10115364
Manufacturer Communication Number: IK0900110
TSB/Document Date: 2017-08-16
Summary
Coolant odor in cab with rear HVAC; equipped with Feature 0595BJN or 0595BWZ
IK0900110 - Coolant odor in cab with rear HVAC (Feature Code 0595BJN or 0595BWZ)
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RUSSIA, AUSTRALIA, BAHAMAS, BOLIVIA,
BRAZIL, BELIZE, CANADA, CHILE, TAIWAN,
COLOMBIA, COSTA RICA, DOMINICAN
REPUBLIC, ECUADOR, EL SALVADOR, TRINIDAD Document
AND TOBAGO, UNITED STATES, URUGUAY,
IK0900110
ID:
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PERU, Curaçao, GUAM, GUATEMALA, GUYANA,
HAITI, HONDURAS, JAMAICA, KOREA, SOUTH
KOREA, NEW ZEALAND, PANAMA
Availability: ISIS, FleetISIS
Revision: 0
Major
System:
Created:
COOLING
Current
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Language:
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Viewed:
2/11/2015
Last
5/11/2015
Modified:
Author:
David
Horner
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Title : Coolant odor in cab with rear HVAC (Feature Code 0595BJN or 0595BWZ)
Applies To : 2010 MaxxForce 11/13L and N13 Engines-ProStar, LoneStar
CHANGE LOG
4/27/2015 - Initial Article Release
DESCRIPTION
This document will guide the user through rear heater core coolant loss diagnostics (for Behr rear HVAC) and should be followed if
symptoms listed below are present. The o-ring can leak where the coolant lines attach to the heater core making it appear that the
heater core has failed.
This document is a supplement to IK1201066 Big Bore Cooling System Diagnostics
Description
Feature Code
BC PROG, HVAC IN SLR & CAB 2010 2010, In Sleeper
0595BJN or 0595BWZ
(Behr) and Cab (Bergstrom)
SYMPTOMS
Diagnostic Trouble Code(s) & Dashboard Indicator Light(s):
- Red light under temperature gauge
- Low coolant warning on Message Center
DTC/Light
Description
SPN 111 FMI 1
Low Coolant
Malfunction Indicator Light (MIL)
Red Stop Lamp (RSL)
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IK0900110 - Coolant odor in cab with rear HVAC (Feature Code 0595BJN or 0595BWZ)
Page 2 of 5
Customer Observations or Concerns:
- Coolant odor in bunk area
- Low Coolant Warning on Message Center
Possible Causes:
-Heater Core O-Ring Seal
Heater Core
SPECIAL TOOLS / SOFTWARE
Tool Description
Tool Number
Radiator Pressure Testing Kit ZTSE2384
Coolant Management Tool
KL5007NAV
Comments
Perform with warm engine
Cooling system drain and
vacuum fill
SERVICE PARTS INFORMATION
Kit Description
Part Number
Quantity
Required
RING,O SEAL 15.54 ID X 2.62 THK
3824706C2
2
New Material
CORE ASM, HEATER REAR AUXILIARY
3599598C1
UNIT
1
If needed
DIAGNOSTIC STEPS
Step Action
Symptom Verification
1
Decision
Yes. Step 2
No. Re-evaluate: customer symptoms, health
Install Radiator Pressure Testing Kit ZTSE2384 with Surge Tank Cap Adaptor
report, warranty history, case file history, 111
on deaeration tank
1 FCAP
Pressurize cooling system to 117 kPa (17 psi) for a minimum of 15 minutes.
Does the pressure drop?
Figure 1: Heater Lines Crimped Under Cab
Step Action
2
Leak Isolation:
Under the vehicle, use clamping pliers several inches away from the metal/rubber
joint to pinch the rubber section of the rear heater lines closed (Figure 1)
Decision
Yes Refer to IK1201066 Big Bore Cooling
System Diagnostics to identify coolant leak
location
No Step 3
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IK0900110 - Coolant odor in cab with rear HVAC (Feature Code 0595BJN or 0595BWZ)
Page 3 of 5
Pressurize cooling system to 17psi
Does the pressure drop?
Figure 2: O-ring Leak
Step Action
Visual Leak Inspection:
• Inside the cab, raise and support the lower bunk.
•
3
Decision
Yes- Remove heater core, clean heater
core surrounding, install new
orings (3824706C2), re-check for leak
Remove two screws securing the heater core cover.
Remove the cover. Inspect for signs of coolant without removing heater core
No Step 4
Is a coolant leak visible?
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IK0900110 - Coolant odor in cab with rear HVAC (Feature Code 0595BJN or 0595BWZ)
Page 4 of 5
Figure 3: Core Leak
Step Action
Decision
Remove Heater Core:
4
Yes: Clean coolant from heater core
surrounding, replace heater core, recheck for leak
No: Re-evaluate customer symptoms,
health report, warranty history, case file
history, 1111 FCAP
Inspect for coolant in heater core surrounding
Is coolant present in bottom of heater core surrounding?
REPAIR STEPS
Repair procedure can be found in Manual 0000002221 HVAC Service section 5.40 HEATER CORE – REAR HVAC UNIT
WARRANTY INFORMATION
Warranty Claim Coding:
Group: 19020- TRUCK HTR/DEFROST
Noun: 076- Core (Heater)
Standard Repair Time(s):
Description
Chassis
SRT
Prostar
R19-3076A-20 0.8
Sleeper HVAC Heater Core
Lonestar
S19-3007A
0.6
Visual Inspection, Pressure test
Prostar
R12-2901U
0.3
Visual Inspection, Pressure test
Lonestar
S12-2901U
0.3
Sleeper HVAC Heater Core
Hours
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IK0900110 - Coolant odor in cab with rear HVAC (Feature Code 0595BJN or 0595BWZ)
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OTHER RESOURCES
Master Service Information Site
Feedback Information
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Staff
ID
U00JFG2
Client
ID
Comments
You received the following feedback From: U00JFG2 - John Gislason Email Address: SMTP:{John.Gislason@Navistar
.com}
John.Gislason@Navistar.com Feedback: This IK is published in Gp 09, but the coding states Gp 19, is the article cross referenced in Gp 19?
Created
Date
5/11/2015
8:08:30 AM
Copyright © 2015 Navistar, Inc.
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- Contains Alugard Plus for compatibility with all ethylene...
- Fights corrosion, scaling and rust while protecting all...
- High-quality additives protect against leaks and won’t...
- Pre-mixed yellow formula is ready-to-use in a 50/50 ratio...
- Contains 30 – 50 ppm of denatonium benzoate as a bittering...
- 5 year/150, 000 mile . Silicate-free, long-life, phosphate...
- Formulated to replace the OEM fluid in Asian make vehicles...
- The long life formula provides protection for all cooling...
- Meets the following OEM and industry specifications...
- Contains 30 – 50 ppm of denatonium benzoate as a bittering...
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TSB/Document ID: IK0900110
Replacement Service Bulletin Number:
MFR Communication Date: 2015-05-11
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: EQUIPMENT:APPLIANCE:AIR CONDITIONER
MFR Component System:
MFR Component Subsystem:
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