11/21/2019

Steel Piston and Aluminum Piston Kit Introduction

Technical Service Bulletin
Technical Service Bulletin: TSB170022
Released Date: 11-Nov-2019
Steel Piston and Aluminum Piston Kit Introduction

Steel Piston and Aluminum Piston Kit Introduction
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
ISL G CM2180
Description of Change
New steel and aluminum piston kits have been released.
The new steel piston replaces the original aluminum piston for select ISL G CM2180 models.
Reason for Change
Improved piston durability.
Customer Communication
Customers who operate 320 hp engines may experience a reduction in power when cruising at
high rpm.
Service Instructions
 CAUTION 
Use of an aluminum piston engine control module (ECM ) calibration code in an engine
with steel pistons will create an uncertified engine configuration and can result in
inconsistent and undesirable engine behavior, and possible engine damage.

Note : Some engines with specific control parts lists (CPL) are not able to be converted
to steel pistons at this time and must continue to use aluminum pistons. Reference the
Service Parts section below for more information.
Warranty Considerations:

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Steel Piston and Aluminum Piston Kit Introduction

For warrantable piston replacements requiring the upgrade of aluminum pistons to steel pistons,
steel piston upgrade kit, Part Number 5472934 or Part Number 5579235, must be used.
Components replaced as directed in this document are not to be inspected for reuse.
Installation of Aluminum Pistons:
See Table 1 for aluminum piston kit part number and kit contents.
See Table 4 for a list of CPLs that must use aluminum pistons.
Conversion from Aluminum Pistons to Steel Pistons:
See Table 2 below for steel piston part numbers and steel piston upgrade kit contents.
See Steel Piston Installation Instruction, Bulletin 5414627, supplied with the steel piston
upgrade kit.
See Table 3 for a list of CPLs that are required to use the steel piston upgrade kit when being
converted from aluminum to steel pistons.
Except for the upper and lower gasket kits, all parts in the steel piston upgrade kit must be
used during the conversion from aluminum pistons. Gaskets that are not required for the
repair of the engine, such as the rear main seal may be discarded.
When changing from aluminum to steel pistons, an updated ECM calibration code must be
installed. Reference Table 5 for ECM calibration code information.
When changing from aluminum to steel pistons, the CPL number will change.
Upon completion of the conversion from aluminum to steel pistons, an authorized change
label, Part Number 5297400 must be completed and installed on the engine. See Figure 1
below.

Figure 1, Steel Piston Authorized Change Label.
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Steel Piston and Aluminum Piston Kit Introduction

Service Parts Availability
Table 1, Aluminum Piston Kit, Part Number 5406108, Contents
Part Description

Part Number

Quantity

Ring, Retaining

3920692

2

Pin, Piston

3934046

1

Set, Piston Ring

4025290

1

Piston, Engine

5311086

1

Table 2, Steel Piston Upgrade Kit, Part Number 5579235, Contents
Part Description

Part Number

Quantity

Kit, Liner

5404408

6

Bearing, Connecting Rod

3950661

12

Kit, Lower Engine Gasket

4089889

1

Kit, Upper Engine Gasket

4352349

1

Kit, Piston Ring

5406026

6

Kit, Engine Piston*

5406084

6

Stainless Steel Oil Cooler

5477432

1

Label, Authorized Change

5297400

1

*Kit Includes Piston Cooling Nozzle, Part Number 5341745.

Table 3, Aluminum Piston to Steel Piston Conversion by CPL
Aluminum Piston CPL

Steel Piston Upgrade Kit
Part Number

Steel Piston CPL

Group 1
887

5579235

897

5579235

3297

5579235

3517

5579235

3518

5579235

3519

5579235

5232

Group 2
4835

5579235

4836

5579235

4926

5579235

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5579

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Steel Piston and Aluminum Piston Kit Introduction

Table 3, Aluminum Piston to Steel Piston Conversion by CPL
Aluminum Piston CPL

Steel Piston Upgrade Kit
Part Number

Steel Piston CPL

Group 1
Additional Parts Required for engines in Table 3, Group 2 Only
Part Description

Part Number

Quantity

Module, Engine Control

5491911

1

Valve, Pressure Regulator

5477889

1

Table 4, Aluminum Piston to Aluminum Piston by CPL
Aluminum Piston CPL

Aluminum Piston Kit Part Number

3205

5406108

3235

5406108

4177

5406108

4352

5406108

4365

5406108

4715

5406108

4818

5406108

4819

5406108

Table 5, ECM Calibration Code Cross-Reference
Original ECM Code

Steel Piston ECM Code

AW90001

AW90160

AW90002

AW90154

AW90003

AW90171

AW90004

AW90140

AW90005

AW90146

AW90006

AW90161

AW90007

AW90150

AW90013

AW90162

AW90014

AW90144

AW90015

AW90172

AW90016

AW90145

AW90017

AW90163

AW90023

AW90151

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Table 5, ECM Calibration Code Cross-Reference
Original ECM Code

Steel Piston ECM Code

AW90024

AW90141

AW90025

AW90167

AW90026

AW90147

AW90027

AW90142

AW90028

AW90156

AW90029

AW90164

AW90030

AW90152

AW90031

AW90175

AW90032

AW90173