NHTSA ID Number: 10171584
Manufacturer Communication Number: TSB190042-012120
TSB/Document Date: 2020-02-24
Summary
This Technical Service Bulletin describes the verification and resolution of a STOP engine light with fault code 2636 or an amber engine light with fault code 1894 as caused by turbocharger actuator overheating. This is an update to a previously submitted communication.
1/28/2020
New Vented Coolant Drain Line Kit to Reduce Variable Geometry Turbocharger Actuator Overheating: FC2636 and FC1894
Technical Service Bulletin
Technical Service Bulletin: TSB190042
Released Date: 21-Jan-2020
New Vented Coolant Drain Line Kit to Reduce Variable Geometry Turbocharger
Actuator Overheating: FC2636 and FC1894
New Vented Coolant Drain Line Kit to Reduce
Variable Geometry Turbocharger Actuator
Overheating: FC2636 and FC1894
Warranty Statement
The information in this document has no effect on present warranty coverage or repair practices,
nor does it authorize TRP or Campaign actions.
Contents
Product Affected
Engines:
ISL9 CM2350 L101
L9
CM2350 L123B
Original Equipment Manufacturer (OEM):
Pierce
Fire Truck
Nova
Gillig
MCI
ADL
EL-DORADO
NABI
Autocar
Transit
Fire Truck
Issue
Symptom:
STOP ENGINE light with FC2636
Amber lamp with FC1894
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New Vented Coolant Drain Line Kit to Reduce Variable Geometry Turbocharger Actuator Overheating: FC2636 and FC1894
Root Cause:
Turbocharger actuator overheating.
Verification
Active or logged occurences of fault codes 2636 or 1894.
Verify unit is not equipped with new vented turbocharger coolant drain line kit part number.
See Table 1 below.
Resolution
Replace turbocharger actuator vented coolant drain line with corresponding kit.
Service Instructions
New turbocharger actuator vented coolant drain line kits are available with a horizontal or
vertical outlet.
Turbocharger actuator vented coolant drain line orientation must be determined in order to
determine correct service kit to be ordered. See Figures 1, 2, 3, and 4 for existing product and
service kit layouts.
See Figure 5 for new production routing.
See Table 1 for kit part numbers.
For new turbocharger actuator coolant drain line kit installation, see corresponding Service
Manual. Reference Procedure 008-017 in Section 08.
Dips or sags of the coolant vent line below the bottom surface of the actuator should be
avoided. If the coolant vent line to the OEM top tank, dips or sags below the bottom surface of
the turbocharger actuator, the coolant vent line must be shortened and raised to be above the
top surface of the turbocharger actuator. See Figure 1 below.
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New Vented Coolant Drain Line Kit to Reduce Variable Geometry Turbocharger Actuator Overheating: FC2636 and FC1894
Figure 1, Coolant Vent Line Routing. OEM Top Tank (1). VGT Actuator (2).
Service Parts Availability
Service kits contain a new turbocharger actuator vented coolant drain tube with vent
accommodation, turbocharger vent line and associated hardware.
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New Vented Coolant Drain Line Kit to Reduce Variable Geometry Turbocharger Actuator Overheating: FC2636 and FC1894
Figure 2, Existing Production Turbocharger Actuator Coolant Lines, Part Number 4352363.
Figure 3, New Turbocharger Actuator Coolant Lines Kit with Horizontal Outlet, Part Number
5473157.
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Figure 4, New Turbocharger Actuator Coolant Lines Kit with Vertical Outlet, Part Number
5473158.
Figure 5, New Self-Assembled Turbocharger Actuator Coolant Lines Kit, Part Number 5473159.
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Figure 6, Existing Production Turbocharger Actuator Coolant Drain Tube With Vent
Accommodation (Left), Part Number 5302803. New Production Turbocharger Actuator Coolant
Drain Tube with Vent Accommodation (Right), Part Number 5446929.
Service Parts Availability
Service parts are available. See Table 1 for part numbers.
Table 1, Service Parts
Part
Description
Existing Part
Number
Obsolete
Superseded
New Part
Number
Horizontal
vented coolant
drain Out Kit
4352363
No
No
5473157
Vertical vented
coolant drain
Out Kit
4352363
No
No
5473158
Self- Assembled
Kit
4352363
No
No
5473159
Table 2, Kit Part Number and Confirmed Application Compatibility
Kit Part Number
OEM
5473157
Pierce Fire Trucks
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Table 2, Kit Part Number and Confirmed Application Compatibility
Kit Part Number
OEM
5473158
Nova
Gillig
MCI
ADL
EL-DORADO
NABI
5473159
Part Identification
A Plain Pipe Coupler is required at the EGR coolant out vent location to install the new
turbocharger vent lines. See Figure 6 for example of EGR vent line installed with the necessary
plain pipe coupler. See Figure 7 for example of EGR cooler vent line installed without Plain Pipe
Coupler. If engine does not have the plain pipe coupler installed see Table 3 for additional part
number to order to install new turbocharger vent lines.
Figure 7, EGR Vent Line Installed with Plain Pipe Coupler.
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Figure 8, EGR Vent line without Plain Pipe Coupler.
Table 3, Additional Part Number Needed
Plain Pipe Coupler
Present
Represented Figure
Action
Part Number
Yes
Figure 7
None
Not Applicable
No
Figure 8
Order Plain Pipe
Coupler
5297873
Production Status
Implemented for production. See Table 4.
Table 4, Production Information
ESN First
Build Date1
Plant
74287491
16 March 2018
Rocky Mount Engine Plant
1
Engine build date can be found on engine dataplate.
Document History
Date
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Details
8/9
1/28/2020
New Vented Coolant Drain Line Kit to Reduce Variable Geometry Turbocharger Actuator Overheating: FC2636 and FC1894
Date
Details
2019-3-19
Module Created
2019-6-20
Product Problem Solving (PPS)
2020-1-21
Added Part Identification Section
Last Modified: 21-Jan-2020
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TSB/Document ID: TSB190042-012120
Replacement Service Bulletin Number:
MFR Communication Date: 2020-01-21
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
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