D21M6REV3 Service Bulletin/Repair Instructions

Daimler Trucks

North America LLC

August 2021

D21M6 REV3
Field Service Campaign
Subject: Gen 5 Customer Demo Unit (CDU) and Pre-Series Unit

Retrofits

Models Affected: Specific 2021 Freightliner New Cascadia model vehicles, powered with

DETROITTM Gen 5 DD15 Engines manufactured February 3, 2020, through December 14, 2020
General Information
Daimler Trucks North America LLC, on behalf of its DETROITTM Powertrain Division, is initiating Field

Service Campaign D21M6 to modify the vehicles mentioned above.

Certain Customer Demo Unit (CDU) and Pre-Series vehicles with Gen 5 engines require engine retrofits

to bring the engines up to full production specifications. This campaign includes several groups based on

engine build date. Each group has specific part replacement requirements further described in Table 1.
Travel Time and Mileage
The repairs for this campaign need to be completed at an Authorized Service Facility. Due to the complexity

of this repair and the tools required, this Campaign does not qualify for travel time and mileage

reimbursement.
Work Instructions
Please refer to the attached work instructions. Prior to performing the campaign, check the vehicle for a

completion sticker (Form WAR261). Also check Warranty History in OWL to see if any of the retrofit parts

have already been replaced and if so, those parts do not need to be replaced again.
Daimler Trucks

North America LLC
Field Service Campaign
August 2021

D21M6 REV3
Replacement Parts

Replacement parts are now available and can be obtained by ordering the part number(s) listed below

from your facing Parts Distribution Center. Please make sure all parts are on hand and available

including the Certified Emission Label prior to customer appointment to avoid unnecessary downtime.

DETROITTM sends these labels next-day air. Please allow 3-5 business days for processing. All

vehicles involved in this campaign will require a replacement emission label.

IMPORTANT: Emission Certification Label Ordering Instructions

•
Order Emission Certification Labels by going to DTNAConnect / Daimler Trucks Technical

Support / Order Center / Customer Support Center / Order Clean Idle Emission Label. Proceed to

choose 2021 Campaign Label. For more detailed ordering instructions, see Certified Emission

Label Ordering Instructions on page 16.
Table 1 - Replacement Parts for D21M6
Campaign

Group

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

Page 2
Part Description

EGR Actuator

EGR Actuator Coolant Supply Line

EGR Actuator Coolant Return Line

Compressor Outlet Elbow Clamp

Clamp OEM Bellows Pipe to Outlet Pipe

Mounting Nut

Mounting Stud

Exhaust Manifold Bellows Clamp

EGR Hot Pipe Upper Clamp

EGR Hot Pipe Lower Clamp

Exhaust Manifold Mounting Bolt (Short)

Exhaust Manifold Mounting Bolt (Long)

Mounting Bolt

Compressor Outlet Elbow O-ring

Mounting Gasket

Front Exhaust Manifold Pressure Tube

Rear Exhaust Manifold Pressure Tube

Seal, Exhaust Manifold Pressure Sensor

Clamp, EGR Cooler Outlet Diffusor

Exhaust Manifold Center Section

Doser Valve Gasket

Exhaust Manifold Spacer (Narrow)

Exhaust Manifold Spacer (Wide)

Exhaust Manifold Gasket

Oil Drain Line
Part Number

DDE EA4711502194

DDE A4712003953

DDE A4712000161

DDE A0019955565

DDE A0019956044

DDE A0029905054

DDE A0029906714

DDE A0039950302

DDE A0039957802

DDE A0039950302

DDE A0199902001

DDE A0199902101

DDE A0209901101

DDE A0259974348

DDE A4700960180

DDE A4711400855

DDE A4711400355

DDE N000000008373

DDE A0039957202

DDE A4721403014

DDE A4721420580

DDE A4721420653

DDE A4721420753

DDE A4721422580

DDE A4721803320
Qty.

1

1

1

1

1

2

2

2

1

1

2

22

2

1

1

1

1

2

1

1

1

22

2

3

1
Daimler Trucks

North America LLC
Field Service Campaign
August 2021

D21M6 REV3
Campaign

Group

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

Page 3
Part Description

Oil Drain Gasket

Oil Supply Seal Ring

Clamping Bracket

EGR Connection Hose

High Pressure Fuel Line Kit

O-Ring, Needle Return Line - At Module

O-Ring, Needle Return Line - At Cylinder Head

Intake Manifold Gasket

Cold Boost Pipe Seal

Oil Module Lower Seal

Oil Module Upper Seal

Coolant Thermostat (angled inlet)

Thermostat Seal

Intake Manifold

Coolant Drain Plug Seal Washer

EGR hot pipe clamps lower

EGR Cooler Rear Seal

EGR Cooler Front Seal

EGR Cooler

EGR Cooler Outlet Elbow Seal

Dearation Fitting Seal Ring

Fuel Rail Clamp

Distributor Housing

Distributor Housing Seal

EGR Hot Pipe

Vibration Damper

Exhaust Valve Cap

Rocker Cover Seal

Spherical Clamp, OEM Exhaust Piping

Spherical Gasket, OEM Exhaust Piping

Charge Air Cooler

Housed Radiator Assembly

Kit,Cac Mounting

Kit,Condensor Mounting

Tube-Clnt,M1400,Dd13,Dd15,M

Hose-Elb,90Deg,Ecr,62.0 Id

Hose-Clnt,Ngc,Inlet,Upper

Hose-Clnt,Upr,Epdm,Ngc

Clamp-Worm,Constant,2-1/2 H^
Part Number

DDE A5411870080

DDE N000000001069

DDE A0129889378

DDE A4709970252

DDE A4720781210

DDE A0309977345

DDE A0309977445

DDE A4720980080

DDE A4720980880

DDE A4721842480

DDE A4721842580

DDE A4722003715

DDE A4722030080

DDE A4730980117

DDE N000000001085

DDE A0019950502

DDE A4721400380

DDE A4721400480

DDE EA4721401575

DDE A4721422880

DDE N000000001069

DDE A4710780335

DDE A4722031361

DDE A4722032680

DDE A4711400513

DDE EA4720352500

DDE A4720530008

DDE A4720160121

TCX T130130349AC2

TCX AMS012

TXE1030523A

TXE1003850D

TXE1220863A

TXE1220864A

A05-18572-000

05-29973-007

05-33890-000

05-36501-000

23-12485-250
Qty.

1

1

1

1

1

1

1

6

1

1

1

1

1

1

1

1

1

1

1

1

2

3

1

1

1

1

6

1

1

1

1

1

1

1

1

1

1

1

4
Daimler Trucks

North America LLC
Field Service Campaign
August 2021

D21M6 REV3
Campaign

Group

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A
Part Description

Scrw Hex Flng,M8X1.25X20,

Isolator-Lwr,Rad,Top

Isolator-Lwr,Rad,Bottom

Clamp-Spr Stl,3/8" Hose^

Clamp-Spr Stl,1/2" Hose^

Clamp-Spr Stl,1.25 Hose^

Clamp

Clamp-104-112Mm,98In-Lb,4"

Clamp-108-116Mm,98In-Lb,4"

Hose-Convoluted,5.75"X4" Id

Isolator-Radiator, Upr

Hose-Cac,Lh,Dd15,Ngc

Hose-Shunt,Ngc,Dd15,Hdep2020

Hose-Vent,Egr,Dd15,Ngc,2020

Clamp-Shrink Band,2.500*

Clamp-Shrink Band,.500*

Clamp-Shrink Band,.375*

Clamp-Shrink Band,1.250*
Part Number
Qty.
23-13345-020

05-32519-060

05-32520-060

23-12691-003

23-12691-005

23-12691-009

DDE A0019955565

BRZ B9224 0411FRU

BRZ B9224 0425FRU

05-34145-001

05-32518-070

01-34572-000

05-34145-000

05-35937-000

23-12413-250

23-12413-050

23-12413-038

23-12413-125
2

2

2

1

3

2

1

4

2

2

2

1

1

1

2

3

1

2
NOTES:

^ Does not apply to VIN 3AKJHHDR2MSLS0605

* Only applies to VIN 3AKJHHDR2MSLS0605

THESE PARTS ARE NOT TO BE FILED ON YOUR D21M6-A CLAIM AS THEY ARE PROVIDED

BY DETROITTM WITH THE REPLACEMENT EMISSION LABEL

A
Motor Control Module (MCM)
DDE A0024464035
1
A
Hose-Clnt,Ngc,Inlet,Upper
05-33890-000
1
A
Hose-Clnt,Upr,Epdm,Ngc
05-36501-000
1
A
Hose-Vent,Egr,Dd15,Ngc,2020
05-35937-000
1

12 3

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