SB-10044667-8427

Daimler Trucks
North America LLC

Field Service Campaign
June 2012
SF449A

Subject: Sterling L-Line Fuel Line Routing
Models Affected: Specific Sterling L-Line natural gas vehicles
manufactured May 5, 2008, through November 3, 2008.

General Information
Daimler Trucks North America LLC, on behalf of its wholly owned subsidiary, Sterling Truck Corporation, is initiating
Field Service Campaign SF449A to modify the vehicles mentioned above.
Certain fuel lines may interfere with an engine mounting clip and/or the air compressor intake tube.
The fuel line and the air compressor intake tube will be inspected, and replaced and/or rerouted if necessary.
There are approximately 320 vehicles involved.
Additional Repairs
Dealers must complete all outstanding field service campaigns prior to the sale or delivery of a vehicle. A Dealer
will be liable for any progressive damage that results from its failure to complete campaigns before sale or delivery
of a vehicle.
Owners may be liable for any progressive damage that results from failure to complete campaigns within a
reasonable time after receiving notification.
Please contact Warranty Campaigns for consideration of additional charges prior to performing the repair.

Work Instructions
Please refer to the attached work instructions. Prior to performing the campaign, check the vehicle for a completion
sticker (Form WAR261).

Replacement Parts
Replacement parts are now available and can be obtained by ordering the kit number listed below from your facing
Parts Distribution Center.
If our records show your dealership has ordered any vehicle(s) involved in campaign SF449A, a list of the customers
and vehicle identification numbers will be available on AccessFreightliner.com. Please refer to this list when ordering
parts for this campaign.

Page 1

Daimler Trucks
North America LLC

Field Service Campaign
June 2012
SF449A

Table 1 - Replacement Parts for SF449A
Campaign Number

Kit Number

25-SF449-000

SF449A

25-SF449-001

Part Description

Part Number

Qty. per
Kit

TUBE-AIR COMP

01-32180-000

1 ea

HOSE-SHUNT LINE

05-16522-087

2 ea

CLAMP-HOSE

UMP S464G16

2 ea

M10X25 HEX FLG SCREW

DDE
N910105010009

2 ea

WASHER-FLAT

23-12707-010

2 ea

Completion Sticker

WAR261

1 ea

HOSE ASSY-CNG

A23-13767-056

1 ea

CLAMP-HOSE

UMP S464G16

1 ea

SCREW-CAP HEX

23-10742-075

1 ea

WASHER-FLAT

23-10900-025

2 ea

NUT-HEX

23-13110-025

1 ea

Completion Sticker

WAR261

1 ea

Suggested
Wholesale*

$103.90 US
$105.98 CAN

$100.41 US
$102.42 CAN

* Please charge all U.S. and Canadian Direct Warranty Customers the above-listed price for the kit, as they are authorized to perform their own Recalls. This
pricing does not apply to Export Distributors.

Table 1

Removed Parts
U. S. and Canadian Dealers, please follow Warranty Failed Parts Tracking shipping instructions for the disposition
of all removed parts. Export distributors, please destroy removed parts unless otherwise advised.

Labor Allowance
Table 2 - Labor Allowance
Campaign Number

Time Allowed
(hours)

SRT Code

Damage Code

0.2

996-0870C

000-Inspected

Inspect Air Intake Tube Only; Reroute or
Replace Fuel Line

0.5

996-0870B

000-Modifiedx

Inspect and Replace Air Compressor
Intake Tube; Inspect Fuel Line Only

1.0

996-0870A

000-Modifiedx

Inspect and Replace Air Compressor
Intake Tube and Fuel Line

1.3

996-0870D

000-Modifiedx

Procedure
Inspect Air Compressor Intake Tube
and Fuel Line Only

SF449A

Table 2

IMPORTANT: When the campaign has been completed, locate the base completion label in the appropriate
location on the vehicle, and attach the gray completion sticker provided in the field service kit (Form WAR261). If
the vehicle does not have a base completion label, clean a spot on the appropriate location of the vehicle and first
attach the base completion label (Form WAR259). If a field service kit is not required or there is no completion
sticker in the kit, write the campaign number on a blank sticker and attach it to the base completion label.

Page 2

Daimler Trucks
North America LLC

Field Service Campaign
June 2012
SF449A

Claims for Credit
You will be reimbursed for your parts, labor, and handling (landed cost for Export Distributors) by submitting your
claim through the Warranty system within 30 days of completing this campaign. Please reference the following
information in QuickClaim or OWL:
• Claim type is Field Service.
• In the FTL Authorization field, enter the campaign number and appropriate condition code (SF449A).
• In the Primary Failed Part Number field, enter 25-SF449-000.
• In the Parts field, enter the appropriate kit number(s) as shown in the Replacement Parts Table.
• In the Labor field, first enter the appropriate SRT from the Labor Allowance Table. For administrative time,
enter SRT 939-0010A for 0.3 hours.
• For OWL, the VMRS Component Code is 013-009-102 and the Cause Code is A1 - Campaign.
This Field Service Campaign will terminate on June 30, 2013. Dealers will be notified of any changes to the
termination date via Important Campaign Information Letter posted on AccessFreightliner.com.
IMPORTANT: ServicePro or OWL must be viewed prior to beginning work to ensure the vehicle is involved and
the campaign has not previously been completed. Also, check for a completion sticker before beginning work.
All claims must be submitted within 30 days of the repair and within 30 days of the termination date of the
campaign. U.S. and Canadian Dealers: All excess inventory to be returned to the PDC following the conclusion of
the campaign must be returned in resaleable condition to the Memphis PDC within 90 days from the termination
date. Please submit a PAR to request return to the Memphis PDC. (Canadian dealers should return the kits to
their facing PDC.) Export Distributors: Excess inventory is not returnable.
U.S. and Canadian dealers, contact the Warranty Campaigns Department from 7:00 a.m. to 4:00 p.m. Pacific Time,
Monday through Friday, via Web inquiry at AccessFreightliner.com / Support / My Tickets and Submit an Inquiry, or
the Customer Assistance Center at (800) 385-4357, after normal business hours, if you have any questions or need
additional information. Export distributors submit a Web inquiry or contact your International Service Manager.

Page 3

Field Service Campaign

Daimler Trucks
North America LLC

June 2012
SF449A

Copy of Notice to Owners
Subject: Sterling L-Line Fuel Line Routing
Daimler Trucks North America LLC, on behalf of its wholly owned subsidiary, Sterling Trucks Corporation,
initiating Field Service Campaign SF449A to modify specific Sterling L-Line natural gas vehicles manufactured
May 5, 2008, through November 3, 2008.
Certain fuel lines may interfere with an engine mounting clip and/or the air compressor intake tube.
The fuel line and the air compressor intake tube will be inspected, and replaced and/or rerouted if necessary.
Please contact an authorized Daimler Trucks North America dealer to arrange to have the campaign performed and
to ensure that parts are available at the dealership. To locate an authorized dealer, search online at www.DaimlerTrucksNorthAmerica.com. The campaign will take approximately one hour and will be performed at no charge to
you.
This Field Service Campaign will terminate on June 30, 2013. Please make sure the campaign is completed
prior to this date. Work completed after this date will be done at the customer’s expense.
As stated in the terms of your express limited warranty, Daimler Trucks North America LLC will not pay for any
damage caused by failure to properly maintain your vehicle. Daimler Trucks North America LLC considers the
work necessary under this campaign to be proper maintenance and will, therefore, not pay for any damage to your
vehicle caused by your failure to have the repairs that are the subject of this campaign performed in a reasonable
time.
IMPORTANT: When the campaign has been completed on your vehicle, please ensure that a completion sticker
has been affixed to your vehicle referencing SF449.
Contact the Warranty Campaigns Department at (800) 547-0712, from 7:00 a.m. to 4:00 p.m. Pacific Time, Monday
through Friday, e-mail address [email protected], or the Customer Assistance Center at
(800) 385-4357, after normal business hours, if you have any questions or need additional information.

WARRANTY CAMPAIGNS DEPARTMENT
Enclosure

Page 4

Daimler Trucks
North America LLC

Field Service Campaign
June 2012
SF449A

Work Instructions
Subject: Sterling L-Line Fuel Line Routing
Models Affected: Specific Sterling L-Line natural gas vehicles
manufactured May 5, 2008, through November 3, 2008.
NOTE: The Work Instructions begin on page 7.

Safety Precautions

DANGER
Natural gas vapors are highly flammable. Failure to observe the following safety precautions could lead
to ignition of the natural gas, which could cause serious bodily injury, death, or severe property damage.
Liquefied natural gas (LNG) vapors are highly flammable. Whenever a leak is suspected, immediately shut off all
engines and ignition sources. Avoid causing sparks, and stay away from arcing switches and equipment. Extinguish
cigarettes, pilot lights, flames, and other sources of ignition in the area and adjacent areas. Immediately provide
extra ventilation to the area. Do not start any equipment until the gas leak is corrected and the area cleared of
LNG.
Natural gas is nontoxic, but can cause asphyxiation at high enough concentrations simply by excluding adequate
oxygen to sustain life.
Periodic inspections of the LNG tank are required by law to ensure continued safety. Each fuel tank should be
visually inspected at specified intervals for external damage and deterioration.
If a tank receives an impact, or has deep scratches or gouges, it should be inspected before refilling. The inspection
should be performed by a qualified person, in accordance with the tank manufacturer’s established inspection
criteria.
Always use a natural gas detector to test the system for leaks, whether an odor is present or not. A bubble solution
can be used to pinpoint the exact location of leaks.

Servicing Precautions
Observe the following safety precautions when servicing LNG-powered vehicles:
• Always purge the fuel lines and tank before performing maintenance or repairs on the fuel system. This can
be done by either transferring LNG in the fuel tank to an approved cryogenic-rated container, or by running
the vehicle until the tank is empty and the engine stops.
• Close the fuel tank shutoff valves before performing maintenance and repairs. Open the valves only if LNG
is needed to operate the engine or to check for leaks.
• Repair work on an LNG fuel system should be performed only by qualified technicians trained in automotive
LNG system repair.
• Always tighten fasteners and fuel connections to the required torque specification. Overtightening or
undertightening can cause leaks.
• Cover eyes and exposed skin with cryogenic-rated protective devices when working on the fuel system or
fueling the vehicle.

Page 5

Field Service Campaign

Daimler Trucks
North America LLC

June 2012
SF449A

Workshop Precautions
Do not store an LNG vehicle indoors for any extended period of time.
Observe the following safety precautions when LNG vehicles are inside a workshop:
• Use only safety fluorescent extension shop lights when working around LNG fuel systems.
• Ensure the shop ceiling is equipped with a vent system that will allow gas to escape and dissipate.
• Ensure the shop is equipped with an alarm system that activates when gas concentration in the air becomes
dangerous.
• Have CO 2 fire extinguishers (ABC minimum) located in a highly visible and easily accessible location.
• Permit no smoking or other ignition sources within thirty feet of an LNG vehicle.
• Avoid open flames or sparks near an LNG vehicle.
• Check the fuel tank pressure gauge periodically to ensure that pressure is within the normal range of 120
to 150 psi (827 to 1034 kPa). In the unlikely event that tank pressure exceeds 230 psi (1586 kPa) and the
pressure relief valve does not open automatically, vent the tank outdoors immediately.

Major Repair and Replacement of Parts
If a natural-gas-fueled vehicle is involved in an accident, remove the fuel tank(s) from service and have them
inspected by a qualified technician. Replace any leaking or damaged fuel tanks and fuel lines; repair or replace
leaking or damaged fittings. Install parts and components in accordance with the manufacturer’s instructions.
Any and all replacement parts (valves, fittings, tubing, etc.) of the LNG fuel system must be designed specifically
for LNG use, and must be approved for use by the fuel system manufacturer.
Install parts and components in accordance with the fuel system manufacturer’s instructions.

Gas Detection System
A gas detection system is used in all Daimler Trucks LNG-fueled vehicles. The system has a sensor in the engine
compartment and one in the cab, both situated in high areas to detect natural gas buildup as a result of leaks. The
system is meant to serve as a supplemental warning only. It is not intended to replace standard safety practices
that should be conducted around flammable gases.
IMPORTANT: To function properly, the gas detection system must be powered at all times. The gas detection
system is directly powered by the batteries, and can only be powered off by disconnecting the batteries. When
servicing a natural-gas-fueled vehicle, disconnect the batteries only when necessary, and do not leave the batteries
disconnected for extended periods of time.

Page 6

Daimler Trucks
North America LLC

Field Service Campaign
June 2012
SF449A

Work Instructions
Air Compressor Intake Tube and Fuel Line Inspections
1. Check the base label (Form WAR259) for a completion sticker for SF449 (Form WAR261), indicating this
work has been completed. The base label is usually located on the passenger-side door, about 12 inches (30
cm) below the door latch. If a completion sticker is present, no work is needed. If a completion sticker is not
present, proceed to the next step.
2. Park the vehicle on a level surface, shut down the engine, and set the parking brakes. Chock the tires.
IMPORTANT: Repairs listed in this work instruction must be performed in the order listed. If needed, the