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NHTSA ID Number: 10154123

Manufacturer Communication Number: IK0900133

TSB/Document Date: 2019-03-04


Summary

Coolant Fill Level


IK0900133 - CV Coolant Fill Level

Page 1 of 3

Countries:

CANADA, UNITED STATES

Availability:

ISIS, FleetISIS, Body Builder, IsSIR Revision:

Document ID: IK0900133

Major System:

COOLING

Created:

1
1/3/2019

Current Language: English

Last Modified: 1/3/2019

Other Languages: NONE

Author:

Viewed:

Bobby Christopher

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Title : CV Coolant Fill Level
Applies To : CV

Change Log
Please refer to the change log text box below for recent changes to this article:
01/03/2018 ‐ Initial Article Release.

Description
CV vehicles will arrive at their destinations with some coolant in the lower chambers of the surge tank and with the upper chambers filled to
the top of the tank (reference Figure 1 below).This is correct but different from other NavistareBay logo vehicles which arrive at their destinations with
coolant levels between cold min and cold max.
• CV vehicles will appear to be “over‐filled” with coolant when they leave the NavistareBay logo assembly facility.
• These vehicles typically have up to 1.4 L of air trapped in the engine after completing the on‐line coolant evac/fill procedure.
Coolant is added to the lower chambers of the surge tank and upper chambers are topped off above the fill line to the top of the bottle
per the GM and NavistareBay logo recommended procedure.
• As the vehicles are used in the field, the air is gradually released from the engine and displaced by coolant from the surge tank.
• The recommended fill procedure ensures that the total vehicle coolant levels will remain high enough to avoid a low coolant condition as
the trapped air is displaced.

Symptoms
Diagnostic Trouble Codes & Dashboard Indicator Lights:
DTC/Light

Description

No Faults or Warning Lights
Customer Observations or Concerns:
Coolant is over‐filled

Special Tools / Software
Tool Description

Tool Number

Coolant Management Tool

KL5007NAV

Fill Cap Adapter

09‐040‐02

Comments

Instructions

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IK0900133 - CV Coolant Fill Level

Page 2 of 3

Service Parts Information
Kit Description

Part Number

Quantity Required

Notes

Not Applicable

Diagnostic Steps
Step Action
DIAGNOSTIC:
#

Decision
Yes: Coolant level is correct; no repair is required

Observe coolant level in the surge tank.
Is the coolant level at or above the cold max
line?

No: Fill the coolant reservoir as outlined in the CV
Technician Manual 0001111853

Figure 1 ‐ Proper coolant level when leaving the plant

Proper fill with upper chamber full to top of tank (brim full) and
residual coolant in lower chamber

Repair Step(s)
1. None required if coolant level in surge tank is at or above cold max. Upper surge tank chambers filled above cold max and as high as the
top of the tank and coolant remaining in lower chambers are normal for these vehicles and coolant should not be removed from them.
2. Coolant levels below cold min require the coolant fill service procedure described in the CV Technician Manual 0001111853.
3. Coolant levels observed between cold min and cold max should be topped off to top of tank unless the vehicle is known to have
completed multiple (three or more) thermal cycles with engine coolant temps exceeding 212°F (100°C) and then cooling to 70°F (21°C)
during each cycle.

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IK0900133 - CV Coolant Fill Level

Page 3 of 3

Figure 2 ‐ Surge Tank Labeling with Volumes

Warranty Information
Warranty Claim Coding:
Refer to the Warranty Coding Manual for Group and Noun Codes.
Standard Repair Time(s):
Refer to the SRT Manual for Repair Times

Other Resources
Master Service Information Site
InternationaleBay logo® CV™ Series Operation and Maintenance Manual
2018–2020 InternationaleBay logo® CV™ Technician Manual (Service and Diagnostic)
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Copyright © 2019 NavistareBay logo, Inc.

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1

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TSB/Document ID: IK0900133

Replacement Service Bulletin Number:

MFR Communication Date: 2019-01-03

MFR Internal Campaign ID/Software Version:

Communication Type: Service Bulletin/Repair Instructions

NHTSA Components: ENGINE

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