SP 8-600-004 Rev. 001

SERVICE PROGRAM
January, 2018

ATTENTION:

Service Managers / Parts Managers

SUBJECT:

Heater blower motor performance.

DESCRIPTION OF WORK:

This Service Program provides information
regarding a performance enhancement which
results in faster heater blower motor speed
and increased airflow on certain model year
2010-2018 Xspotter vehicles.

PROGRAM EXPIRES:
January 31, 2019

VEHICLES AFFECTED:

There are 2,220 vehicles affected,
manufactured after Nov.4, 2009. To
determine if a vehicle is affected by this
Serrvice Program, log in to the Autocar
Warranty Management System at www.
autocartruck.com. Click on the blue “Warranty
Management” diamond on the right hand
side of the page. From the main menu,
select “Service Programs” and look for the
Autocar recall number above. An excel file
will be accessible with the VIN list of affected
vehicles. Alternatively, to determine if a single
vehicle is affected, select “VIN Profile” from
the main menu. In the “Chassis Number”
field, enter the last 6 of the VIN. Once the
VIN profile is displayed, scroll down to the
“Service Program Information” section.

SERVICE PROGRAM
INFORMATION:

Service Programs are product modifications
and/or product improvements that Autocar
has determined will enhance the operation of
the truck. In a continuing effort to inform our
customers of potential service issues and
avoid unnecessary down time, Autocar has
identified the following operation as
recommended preventive maintenance.
This Service Program should be added to
your preventive maintenance and service
manuals.
While being committed to continuous product
improvement, Autocar is not liable for
updating existing chassis after they have been
placed in service.
Questions regarding this Service Program
should be directed to Autocar Technical
Support at 888-218-3611.

TO OBTAIN PARTS:

DO NOT submit a Solutions ticket.
Ensure that you have authorization from the
customer to perform this work and send an
e-mail to: [email protected]
Include:
1. VIN(s) (or) (last 6 digits of the VIN(s))
2. Attention To Name
3. Ship To Address.

SERVICE RESPONSIBILITY:

Service Programs are performed on eligible
vehicles at no charge to the owner until the
expiration date listed above.
Autocar Industries, LLC
551 South Washington Street
Hagerstown, IN 47346
877-973-3486

Page 1 of 9

SP 8-600-004 Rev. 001

SERVICE PROGRAM
January, 2018

REQUIRED PARTS:

(1) S6031002-001 Harness
(1) 121B20-B2M-HA circuit breaker
(2) 32011 Waytek terminals
(2) 31010 Waytek terminals
(1) 100 mm convoluted tubing

CLAIMS FOR REIMBURSEMENT:
Submit a claim for reimbursement in
accordance with Autocar’s Warranty
Administration Manual.

CLAIM CODING INFORMATION:
Repair
Number
(Op Code)

Time
Allowance
(SRT)

15.20.1

1.00 HR

Description

Heater Blower
Motor Performance
Enhancement

TOOLS REQUIRED:

1/4” Drive ratchet.
1/4” Drive 5/16” socket.
1/4” drive 3/8” socket.
1/4” Drive 7/16” deep socket.
Standard screwdriver
#2 Phillips screwdriver
Wire stripping pliers
Wire crimping pliers

Page 2 of 9

SAFETY NOTICES:

Allow the vehicle’s engine and cooling
system to cool to ambient temperature before
performing the repair procedure. A hot engine
or cooling assembly may cause burns or other
personal injury.

Never rely on the hydraulic pressure to hold
the cab in an open position. Always use the
safety pin in the cab tilt lock tube to prevent
serious personal injury or death.

To prevent eye injury, always wear eye
protection
when
performing
vehicle
maintenance, service or inspection.

Before working on a vehicle, set the parking
brake, place the transmission in neutral and
block the wheels. Failure to do so can result in
unexpected vehicle movement and can cause
serious personal injury or death.

Autocar Industries, LLC
551 South Washington Street
Hagerstown, IN 47346
877-973-3486

SP 8-600-004 Rev. 001

SERVICE PROGRAM
January, 2018

Working on CNG/LNG Trucks

If you store or dispense Compressed Natural
Gas (CNG) or Liquefied Natural Gas (LNG),
or if you work on CNG or LNG trucks, your
location must be fully compliant with applicable
codes, regulations and standards, including
National Fire Protection Associate (NFPA)
codes, Society of Automotive Engineers (SAE)
standards, American National Standards
Institute (ANSI) Natural Gas Vehicle (NGV)
standards, the United States Code of Federal
Regulations (CFR) and your state and local
fire and other applicable codes (including, for
example, the California Code of Regulations
and the Texas Administrative Code).
Contact your local fire department for guidance
and additional compliance information.
Technicians working on Autocar trucks with
CNG or LNG engines must be trained in the
proper repair of CNG and LNG trucks and
engines and the safe storage and dispensing
of CNG and LNG.

Autocar Industries, LLC
551 South Washington Street
Hagerstown, IN 47346
877-973-3486

Working on CNG Fuel Systems

CNG fuel systems include a high pressure
(3600 psi) system for fuel storage and a low
pressure system (125 psi) for consumption by
the engine. Understanding the characteristics
of CNG and how the fuel system works will
prevent injury and damage to persons and
property.
Attempting to operate or maintain any CNG fuel
system without proper training is dangerous.
Complete training and consult instructional
bulletins from the CNG system suppliers, such
as Agility Fuel Systems’ Field Service Bulletin,
Safely Working on CNG Fuel Systems.

Welding and Hot Work Near CNG
and LNG Trucks

Welding, grinding and other “hot work” can
be safely performed on or near a CNG or
LNG vehicle, but certain precautions must
be followed. Understand and perform the
necessary precautions provided by the CNG
system suppliers, such as Agility Fuel Systems’
Field Service Bulletin, Welding and Hot Work
Precautions Near CNG and LNG Vehicles.

Page 3 of 9

SP 8-600-004 Rev. 001

SERVICE PROGRAM
January, 2018

CNG Cylinders

CNG fuel containers must meet Federal
Motor Vehicle Safety Standard (FMVSS) 304
(Compressed Natural Gas Fuel Container
Integrity) and/or ANSI/CSA NGV2 (Basic
Requirements for Compressed Natural Gas
Vehicle Fuel Containers). Both standards
specify a detailed visual examination every
three years.
Ensure that every truck owner completes the
required inspections, in accordance with the
applicable standards and other resources, such
as the Clean Vehicle Education Foundation
and NGVAmerica’s Compressed Natural Gas
(CNG) Container Visual Inspection Advisory.
FMVSS 304 also requires that cylinders not be
used after the end of life (EOL) date provided
on the tank label. The EOL date is also
displayed in the engine compartment and at
the fueling connection of each truck. If there
is any question as to proper decommissioning
of a cylinder, contact the manufacturer, whose
name and address is also required to be on
the label.

Page 4 of 9

CNG Fuel Container Pressure
Relief Devices (PRDs)

PRDs must be properly maintained and
positioned for safe operation of a CNG fuel
system. Missing vent caps can allow moisture
into PRDs and vent lines, which can freeze
and damage these safety components. Debris
which clogs the PRDs and/or vent lines can
prevent proper function.
PRDs must be positioned to vent upward, not
outward, from a vehicle.
Ensure that every truck owner completes
periodic inspections of the PRDs and vent lines
and systems, in accordance with guidance
provided by the system component suppliers.

Alert First Responders to CNG
and LNG

In the event of a fire or other emergency, alert
first responders to the presence and location
of CNG fuel systems, tanks and dispensers.
Ensure that emergency personnel are aware
of proper precautions, such as those provided
in Agility’s First Responder Guide: CNG and
LNG Vehicle Fuel Systems.

Autocar Industries, LLC
551 South Washington Street
Hagerstown, IN 47346
877-973-3486

SP 8-600-004 Rev. 001

SERVICE PROGRAM
January, 2018

HEATER BLOWER MOTOR
PERFORMANCE ENHANCEMENT:
LOCKOUT/TAGOUT
PROCEDURES:

Before entering the vehicle or vehicle body,
read and follow OSHA regulations concerning
entry and working in “CONFINED SPACE”
OSHA 1910.146 and “LOCKOUT/TAGOUT”
OSHA 1910.147. Follow OSHA regulations
while performing any work on the vehicle. The
vehicle must be disabled by the following steps
before performing any work on the vehicle:
1. Place the transmission in NEUTRAL.
2. Set the parking brake.
3. Shut the engine OFF.
4. Lock cab doors, keep the key in your
pocket. Block the wheels before entering
the body or performing any work on the
vehicle.
5. Turn the battery disconnect switch OFF, if
equipped.
6. Completely drain the air from the
primary/A system and secondary/B
system by opening the drain valves on
the air tanks themselves or by using the
drain manifold if supplied. When draining
the air tanks, do not look into the area
where air is draining. Dirt or sludge
particles may be expelled in the air
stream and can cause eye injury.
7. Place magnetic “DANGER” signs on both
cab doors before entering the body or
performing any work on the vehicle.
8. Take proper precautions before working
under the vehicle. Use ramps approved
for the weight of your vehicle, or use floor
jacks and stands. Never work under a
vehicle supported by jacks alone. Always
use jack stands to support the vehicle.

Autocar Industries, LLC
551 South Washington Street
Hagerstown, IN 47346
877-973-3486

1.

Locate the heater blower motor access
cover at the base of the heater case
(see Figure 1).

Heater Blower Motor Access Cover

Figure 1
2.

Remove the four screws attaching the
cover to the heater case, remove the
cover and set the screws and cover aside
for reinstallation (see Figure 2).

Figure 2

Page 5 of 9

SP 8-600-004 Rev. 001

SERVICE PROGRAM
January, 2018

3.

Locate the wiring pass through port on
the inboard side of the heater case
(see Figure 3).

5.

Insert the four-wire section of the new
harness (S6031002-001), containing
wires numbers 8, 9, 10 and 11, through
the grommet and through the port
(see Figure 5).

Note: The harness as depicted in the
Figures have the terminals already
installed (ref. steps 7-11).

Wiring Pass Through Port

Figure 3
4.

Remove the grommet from the pass
through port (see Figure 4).

Four Wires from Harness

Figure 5
6.

Un-plug wire 26 (in some cases, wire 26
will be colored red) from the blower motor
connection (see Figure 6).

Grommet

Figure 4

Wire 26

(In Some Cases, Wire 26 Will Be Colored Red)

Figure 6

Page 6 of 9

Autocar Industries, LLC
551 South Washington Street
Hagerstown, IN 47346
877-973-3486

SP 8-600-004 Rev. 001

SERVICE PROGRAM
January, 2018

7.

Install the new Waytek terminal
(32011) onto wire 9 of the new harness
(S6031002-001) and connect wire 9 to
the open terminal at the blower motor
connection (see Figure 7).

8.

Install the new Waytek terminal (31010)
onto wire 10 of the new harness
(S6031002-001) and connect wire 10 to
wire 26 (in some cases, wire 26 will be
colored red) (see Figure 7).

10. Install the new Waytek terminal
(32011) onto wire 8 of the new harness
(S6031002-001) and connect wire 8 to
the open terminal at the blower motor
connection (see Figure 9).

Figure 9

Figure 7
9.

Un-plug wire 27 (in some cases, wire 27
will be colored orange) from the blower
motor connection (see Figure 8).

11. Install the new Waytek terminal (31010)
onto wire 11 of the new harness
(S6031002-001) and connect wire 11
to wire 27 (in some cases, 27 will be
colored orange).
12. Route the new harness (S6031002-001)
and secure to the existing harness with
cable ties.

Wire 27

(In Some Cases, Wire 27 Will Be Colored Orange)

Figure 8
Autocar Industries, LLC
551 South Washington Street
Hagerstown, IN 47346
877-973-3486

Page 7 of 9

SP 8-600-004 Rev. 001

SERVICE PROGRAM
January, 2018

13. Reinstall the heater blower motor access
cover using the four screws which were
set aside in step 2 (see Figure 10).
Heater Blower Motor Access Cover

17. Locate the cab circuit breaker at the base
of the dash. Remove the output terminal
nut and set aside. Install wire PWR of the
new harness (S6031002-001) and secure
with the same nut (see Figure 12).

Cab Circuit Breaker

Figure 10
14. Locate the blower motor circuit breaker
at the base of the dash (see Figure 11).
Figure 12

Circuit Breaker

18. Locate the cab ground stud located at
the forward side or the engine tunnel and
forward of the throttle pedal
(see Figure 13).

Figure 11
15. Remove the terminal retaining nuts
and mounting screws and set aside for
reinstallation.
16. Remove and discard the existing circuit
breaker and install the new circuit
breaker (121B20-B2M-HA) using the
same mounting screws.

Page 8 of 9

Cab Ground Stud

Figure 13

Autocar Industries, LLC
551 South Washington Street
Hagerstown, IN 47346
877-973-3486

SP 8-600-004 Rev. 001

SERVICE PROGRAM
January, 2018

19. Remove the nut from the cab ground
stud and set aside for reinstallation.
Install wire OC-FZ of the new harness
(S6031002-001) and reinstall the nut
(see Figure 14).

Nut

Figure 14
20. Install the 100 MM convoluted tubing
onto the new harness (S6031002-001)
and secure it to the existing cab harness
to prevent chafing or interference with
control functions.
21. Start the engine and verify that all blower
motor functions are operational.
22. Repairs are complete.

Autocar Industries, LLC
551 South Washington Street
Hagerstown, IN 47346
877-973-3486

Page 9 of 9