freightliner Run Smart ARGOSY Release note

ARGOSY®
STI-385-2
A24-00879-000
Driver’s Manual

Introduction
This manual provides information needed to operate
and understand the vehicle and its components.
More detailed information is contained in the Owner’s
Warranty Information for North America booklet, and
in the vehicle’s workshop and maintenance manuals.
Custom-built Freightliner vehicles are equipped with
various chassis and cab components. Not all of the
information contained in this manual applies to every
vehicle. For details about components in your ve-
hicle, refer to the chassis specification pages in-
cluded in all new vehicles and to the component in-
formation label, located inside the vehicle.
For your reference, keep this manual in the vehicle
at all times.
IMPORTANT: Descriptions and specifications in
this manual were in effect at the time of printing.
Freightliner Trucks reserves the right to discon-
tinue models and to change specifications or
design at any time without notice and without
incurring obligation. Descriptions and specifica-
tions contained in this publication provide no
warranty, expressed or implied, and are subject
to revisions and editions without notice.
Environmental Concerns and
Recommendations
Whenever you see instructions in this manual to dis-
card materials, you should first attempt to reclaim
and recycle them. To preserve our environment, fol-
low appropriate environmental rules and regulations
when disposing of materials.
Event Data Recorder
This vehicle is equipped with one or more devices
that record specific vehicle data. The type and
amount of data recorded varies depending on how
the vehicle is equipped (such as the brand of engine,
if an air bag is installed, or if the vehicle features a
collision avoidance system, etc.).
Customer Assistance Center
Having trouble finding service? Call the Customer
Assistance Center at 1-800-385-4357 or 1-800-FTL-
HELP. Call night or day, weekdays or weekends, for
dealer referral, vehicle information, breakdown coor-
dination, or Fleetpack assistance. Our people are
knowledgeable, professional, and committed to fol-
lowing through to help you keep your truck moving.
© 2007–2015 Daimler Trucks North America LLC. All rights reserved. Daimler Trucks North America LLC is a Daimler
company.
No part of this publication, in whole or part, may be translated, reproduced, stored in a retrieval system, or transmitted
in any form by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written per-
mission of Daimler Trucks North America LLC. For additional information, please contact Daimler Trucks North
America LLC, Service Systems and Documentation, P.O. Box 3849, Portland OR 97208–3849 U.S.A. or refer to
www.Daimler-TrucksNorthAmerica.comand www.FreightlinerTrucks.com.
Foreword
STI-385-2 (11/14)
Part Number A24-00879-000
Printed in U.S.A.

Contents
Chapter Page
Introduction, Environmental Concerns and Recommendations,
Event Data Recorder, Customer Assistance Center ....................... Foreword
1Vehicle Identification ...................................................... 1.1
2Vehicle Access .......................................................... 2.1
3Electrical System ........................................................ 3.1
4Instruments ............................................................. 4.1
5Driver Controls .......................................................... 5.1
6Climate Control .......................................................... 6.1
7Seats and Restraints ..................................................... 7.1
8Cab and Sleeper Features ................................................. 8.1
9Engine Starting, Operation, and Shutdown .................................... 9.1
10 Optional Engine Systems ................................................. 10.1
11 Emissions Reduction Components ......................................... 11.1
12 Brake System .......................................................... 12.1
13 Steering System ........................................................ 13.1
14 Manual Transmissions and Clutch .......................................... 14.1
15 Automated Transmissions ................................................ 15.1
16 Drive Axle Feature Operation ............................................. 16.1
17 Fifth Wheels ........................................................... 17.1
18 Trailer Couplings ........................................................ 18.1
19 Headlight Aiming ........................................................ 19.1
20 Cab Appearance ........................................................ 20.1
21 In an Emergency ....................................................... 21.1
22 Pre- and Post-Trip Checklists ............................................. 22.1
23 Pre- and Post-Trip Inspections and Maintenance .............................. 23.1
Index .................................................................. I.1

1
Vehicle Identification
Component Information Label ....................................................... 1.1

Component Information Label
The component information label lists the vehicle
model, identification number, and major component
models. It also lists the major assemblies and instal-
lations shown on the chassis specification sheet. The
component information label is typically attached to
the passenger-side dash. An illustration of the label
is shown in Fig. 1.1.
02/20/2012 f080176
Fig. 1.1, Component Information Label
Vehicle Identification
1.1

2
Vehicle Access
Door Locks and Handles ........................................................... 2.1
Cab Access, Fixed Steps ........................................................... 2.1
Cab Access, Mobile Stairs .......................................................... 2.4
Back-of-Cab Access ............................................................... 2.7
Opening the Grille ................................................................ 2.8
Cab Tilt System .................................................................. 2.9

Door Locks and Handles
One common key operates the ignition switch and all
of the door locks.
IMPORTANT: Each key is numbered. Record
the number so a duplicate key can be made, if
needed.
To unlock the right-hand door from outside the cab,
insert the key in the lock and turn it one-quarter turn
counterclockwise. Turn the key to the original posi-
tion to remove it. See Fig. 2.1.
To unlock the left-hand door from outside the cab,
insert the key in the lock and turn it one-quarter turn
clockwise. Turn the key counterclockwise to the origi-
nal position to remove it. Pull out on the paddle
handle to open the door.
NOTE: The cab door locks can be operated
when the doors are open.
To lock a door from outside the cab, insert the key in
the lock and turn it opposite the unlocking direction
(counterclockwise for the left-hand door, clockwise
for the right-hand door). See Fig. 2.2.
To lock a door from inside the cab, push the lock
knob down or press the automatic lock button on the
door armrest, depending on what the vehicle is
equipped with. See Fig. 2.2. To unlock the door from
inside, pull the lock knob up or press the unlock but-
ton on the door armrest, depending on what the ve-
hicle is equipped with.
Cab Access, Fixed Steps
WARNING
Wet or dirty shoes greatly increase the chance of
slipping or falling. If your shoes are wet or dirty,
be especially careful when entering or exiting the
vehicle.
Always maintain three-point contact with the ve-
hicle when entering or exiting the cab. Three-
point contact means both feet and one hand, or
both hands and one foot.
Do not jump from the vehicle.
The grab handles, access steps, and steering wheel
are all part of the cab access system. Use these
"helping hands" when getting into or out of the cab to
increase your security and comfort.
Left Side Entry
1. Open the left-hand door and place anything that
you are carrying in the cab.
2. Grasp the aft grab handle with your right hand
and the forward grab handle with your left hand.
See Fig. 2.3.
3. Place your right foot on the bottom step and pull
yourself up.
4. Place your left foot on the middle step, reaching
higher on both grab handles.
05/03/2012 f720751
1
2
3
4
1. Exterior Deck
2. Door Handle
3. Forward Grab Handle
4. Mobile Stairs Override
Button
Fig. 2.1, Door Exterior (right side shown)
Vehicle Access
2.1

5. Place your right foot on the top step and pull
yourself up.
NOTE: The left side of the cab is equipped with
an A-pillar grab handle or the steering wheel,
depending on whether the vehicle is left-hand
drive (LHD) or right-hand drive (RHD).
6. Move your right hand to the forward grab handle
and your left hand to the steering wheel or
A-pillar grab handle, then place your left foot on
the deck.
7. Step into the cab with your right foot first.
Left Side Exit
IMPORTANT: Do not attempt to exit the cab
while carrying any items in your hands.
1. If you take items with you, place them in an ac-
cessible location on the seat or cab floor. Make
sure they will not get in your way as you exit.
WARNING
Always face in when exiting the cab. Do not at-
tempt to exit with your back to the cab, as you
04/16/2012 f720747
1
23 4
1. Door Pocket
2. Lock Knob
3. Door Handle
4. Upper Door Grab
Handle
Fig. 2.2, Door Interior
04/27/2012 f720748
12
456
7
8
9
3
1. Upper Door Grab
Handle
2. Door Pocket
3. Exterior Deck
4. A-Pillar Grab Handle
5. Forward Grab Handle
6 Aft Grab Handle
7. Top Step
8. Middle Step
9. Bottom Step
Fig. 2.3, Fixed Steps and Grab Handles, Left Side (RHD
shown)
Vehicle Access
2.2

would going down a flight of stairs. It is easier to
slip or lose your balance. If you slip when exiting
in this way, there is a greater likelihood of per-
sonal injury.
NOTE: The left side of the cab is equipped with
an A-pillar grab handle or the steering wheel,
depending on whether the vehicle is LHD or
RHD.
2. Grasp the steering wheel or A-pillar grab handle
with your left hand, place your right hand on the
forward sidewall grab handle, and place both feet
on the deck, facing into the cab.
3. Grasp the forward grab handle with your left
hand and move your right hand to the aft grab
handle.
4. Move your right foot to the top step.
5. Move your left foot to the middle step and lower
your hands on both grab handles.
6. Move your right foot to the bottom step.
7. Step to the ground with your left foot first.
Right Side Entry
1. Open the right-hand door and place anything that
you are carrying in the cab.
2. Grasp the aft sidewall grab handle with your left
hand and the forward grab handle with your right
hand. See Fig. 2.4.
3. Place your left foot on the bottom step and pull
yourself up.
4. Place your right foot on the middle step, reaching
higher on both grab handles.
5. Place your left foot on the top step and pull your-
self up.
NOTE: The right side of the cab is equipped
with an A-pillar grab handle or the steering
wheel, depending on whether the vehicle is LHD
or RHD.
6. Move your left hand to the forward grab handle
and your right hand to the steering wheel or
A-pillar grab handle, then place your right foot on
the deck.
7. Step into the cab with your left foot first.
Right Side Exit
IMPORTANT: Do not attempt to exit the cab
while carrying any items in your hands.
1. If you take items with you, place them in an ac-
cessible location on the seat or cab floor. Make
sure they will not get in your way as you exit.
WARNING
Always face in when exiting the cab. Do not at-
tempt to exit with your back to the cab, as you
would going down a flight of stairs. It is easier to
slip or lose your balance. If you slip when exiting
05/04/2012 f720749
1
2
3
5
6
7
8
9
4
1. Bottom Step
2. Middle Step
3. Top Step
4. Exterior Deck
5. Door Pocket
6 Upper Door Grab
Handle
7. Steering Wheel
8. Forward Grab Handle
9. Aft Grab Handle
Fig. 2.4, Fixed Steps and Grab Handles, Right Side
(RHD shown)
Vehicle Access
2.3

in this way, there is a greater likelihood of per-
sonal injury.
NOTE: The right side of the cab is equipped
with an A-pillar grab handle or the steering
wheel, depending on whether the vehicle is LHD
or RHD.
2. Grasp the steering wheel or A-pillar grab handle
with your right hand, place your left hand on the
forward sidewall grab handle, and place both feet
on the deck, facing into the cab.
3. Grasp the forward grab handle with your right
hand and move your left hand to the aft grab
handle.
4. Move your left foot to the top step.
5. Move your right foot to the middle step and lower
your hands on both grab handles.
6. Move your left foot to the bottom step.
7. Step to the ground with your right foot first.
Cab Access, Mobile Stairs
WARNING
Wet or dirty shoes greatly increase the chance of
slipping or falling. If your shoes are wet or dirty,
be especially careful when entering or exiting the
vehicle.
Always maintain three-point contact with the ve-
hicle when entering or exiting the cab. Three-
point contact means both feet and one hand, or
both hands and one foot.
Do not jump from the vehicle.
The grab handles, access steps, and steering wheel
are all part of the cab access system. Use these
"helping hands" when getting into or out of the cab.
They will increase your security and comfort.
The mobile stairs will deploy when the cab door is
opened. As the stairs deploy, an audible alert sounds
outside the vehicle. If anything prevents deployment
of the stairs, a buzzer will sound and an indicator will
illuminate on the dash.
The cab stairs will not operate under the following
conditions:
•parking brake is not set
•vehicle is in motion (stairs automatically stow if
the vehicle begins to move)
•sensors detect weight on the stairs
•cab is tilted
•an obstacle is encountered in the stair travel
path
•the disable button is pressed
To prevent deployment of the stairs from outside the
vehicle, press the button on the side of the cab, di-
rectly above the stairs, before opening the door. See
Fig. 2.1.
To prevent deployment of the stairs from inside the
cab, press the dash rocker switch labeled RH STEP
or LH STEP while opening the cab door. See
Fig. 2.5.
NOTE: Pressing the disable button or switch will
disable the stairs for one cycle of opening and
closing the door. You must press the disable
button each time you want to prevent deploy-
ment of the stairs.
Left Side Entry
1. Open the left-hand door and place anything that
you are carrying in the cab.
2. Grasp the aft grab handle (Fig. 2.6) with your
right hand and grab the forward grab handle with
your left hand, reaching up as far as is
comfortable.
3. Place your right foot on the bottom step and pull
yourself up.
f61118204/24/2012
1
2
1. Right-Hand Stairs
Switch
2. Left-Hand Stairs
Switch
Fig. 2.5, Mobile Stairs Deployment Switches
Vehicle Access
2.4

4. Place your left foot on the middle step and pull
yourself up.
5. Move your left hand to the forward grab handle,
then place your left foot on the top step.
NOTE: The left side of the cab is equipped with
an A-pillar grab handle or the steering wheel,
depending on whether the vehicle is LHD or
RHD.
6. Pull yourself up and place your right foot on the
top deck and move your left hand to the A-pillar
grab handle or steering wheel.
7. Move your right hand to the steering wheel or
A-pillar grab handle.
8. With both hands gripping the steering wheel or
A-pillar grab handle, move your right foot into the
cab.
Left Side Exit
IMPORTANT: Do not attempt to exit the cab
while carrying any items in your hands.
NOTE: The left side of the cab is equipped with
an A-pillar grab handle or the steering wheel,
depending on whether the vehicle is LHD or
RHD.
1. Grasp the steering wheel or A-pillar grab handle
with both hands, and stand on the deck at the
top of the stairs facing into the cab.
2. With your right hand, grasp the forward grab
handle.
3. Move your right foot to the top step.
4. Move your left hand to the forward grab handle
and move your left foot to the middle step.
5. Move your right hand to the aft grab handle and
move your right foot to the bottom step.
6. Step to the ground with your left foot.
Right Side Entry
1. Open the right-hand door and place anything that
you are carrying in the cab.
2. Grasp the aft grab handle with your left hand and
grab the forward grab handle with your right
hand, reaching up as far as you’re comfortable.
See Fig. 2.7.
3. Place your left foot on the bottom step and pull
yourself up.
4. Place your right foot on the middle step and pull
yourself up.
5. Move your right hand to the forward grab handle,
then place your right foot on the top step.
NOTE: The right side of the cab is equipped
with an A-pillar grab handle or the steering
wheel, depending on whether the vehicle is LHD
or RHD.
6. Pull yourself up and place your left foot on the
top deck and move your right hand to the A-pillar
grab handle or steering wheel.
7. Move your left hand to the steering wheel or
A-pillar grab handle.
08/10/98 f720309
1
2
3
4
5
6
7
1. Bottom Step
2. Middle Step
3. Top Step
4. Top Deck
5. Aft Grab Handle
6. Forward Grab Handle
7. Steering Wheel
Fig. 2.6, Mobile Stairs, Left-Hand Side
Vehicle Access
2.5

8. With both hands gripping the steering wheel or
A-pillar grab handle, move your left foot into the
cab.
Right Side Exit
IMPORTANT: Do not attempt to exit the cab
while carrying any items in your hands.
NOTE: The right side of the cab is equipped
with an A-pillar grab handle or the steering
wheel, depending on whether the vehicle is LHD
or RHD.
1. Grasp the steering wheel or A-pillar grab handle
with both hands, and stand on the deck at the
top of the stairs facing into the cab.
2. With your left hand, grasp the forward grab
handle.
3. Move your left foot to the top step.
4. Move your right hand to the forward grab handle
and move your right foot to the middle step.
5. Move your left hand to the aft grab handle and
move your left foot to the bottom step.
6. Step to the ground with your right foot.
Mobile Stair Lock-Up Procedures
Access Stairs Will Not Fully Deploy
1. Close the cab door.
2. Ensure the parking brake is set.
3. Inspect for an obstruction in the travel path of the
steps.
4. Start the engine to increase battery voltage.
5. If the vehicle is parked at an incline greater than
3.5 degrees in any direction, move it to a level
surface (if conditions permit).
6. Open the door again. If the steps will not fully
deploy, but will return to a fully stowed position,
press the RH STEP or LH STEP switch while
opening the cab door.
7. Enter and exit the cab using the access instruc-
tions for fixed steps.
Access Stairs Will Not Fully Stow
1. Open and close the door.
2. Inspect for an obstruction in the travel path of the
steps.
3. Start the engine to increase battery voltage.
4. If the vehicle is parked at an incline greater than
3.5 degrees in any direction, move it to a level
surface (if conditions permit).
05/16/2012 f720750
5
6
7
8
9
1
2
3
4
1. Bottom Step
2. Middle Step
3. Top Step
4. Exterior Deck
5. Door Pocket
6 Upper Door Grab
Handle
7. Steering Wheel
8. Forward Grab Handle
9. Aft Grab Handle
Fig. 2.7, Mobile Stairs and Grab Handles, Right-Hand
Side (RHD shown)
Vehicle Access
2.6

5. Open and close the door again. If the steps still
will not stow, leave the door open and exit the
cab from the opposite side.
6. Place a hand on the exterior surface of the step,
then apply light pressure to the step while clos-
ing the door.
7. If the step stows, press the yellow disable button
next to the grab handle. This will disable the step
for cycle of opening and closing the door.
8. If the steps will not fully stow, follow the instruc-
tions on the inside of the baggage door to safely
stow the steps.
Back-of-Cab Access
Grab handles are typically located on the backwall of
the cab or sleeper, or on the inside of the cab ex-
tender, if equipped. See Fig. 2.8. A grab handle may
also be provided on the exhaust stack. Steps may be
mounted on the fuel tank(s), battery or tool box(es),
or on metal brackets secured to the frame rail. A
deck plate is mounted across the top of the frame
rails. All other areas are not meant to support back-
of-cab access.
WARNING
Follow these rules for back-of-cab access. Failing
to follow these rules could lead to a fall, and pos-
sible personal injury.
Never step on any exterior part unless it has a
slip-resistant surface meant for safe stepping. If
the surface is movable, such as a battery box
cover with a slip-resistant surface, be certain it is
firmly secured.
Be careful not to trip on items such as chains or
air lines in the back-of-cab area.
Always follow safety procedures for back-of-cab
access, maintaining three-point contact—both
hands and one foot, or both feet and one hand—
whenever moving around, and always face in to-
ward the deck plate when climbing up or down.
Wet or dirty shoes, steps, or grab rails greatly
increase the chance of slipping or falling. If your
shoes or the contact areas are wet or dirty, clean
and dry them as much as possible before ac-
cessing the back of cab area, and be especially
careful when climbing or standing on the vehicle.
Never jump onto, or off of, a vehicle; doing so
creates a very high likelihood of a fall and per-
sonal injury.
Wet or dirty shoe soles greatly increase the chance
of slipping or falling. If your soles are wet or dirty, be
especially careful when accessing the back-of-cab
area.
Be careful not to get hands or feet tangled in hoses
or other back-of-cab equipment. Carelessness could
cause a person to trip and fall, with possible injury.
Accessing Back-of-Cab Area
WARNING
External surfaces of the exhaust system remain
hot after the engine has been shut down. When
accessing the back of the cab or sleeper, do not
05/09/2012 f720752
1
2
3
4
5
6
1. Bottom Step
2. Top Step
3. Outboard Grab
Handle
4. Inboard Grab Handle
5. Deck Plates
6. Exhaust-Mounted
Grab Handle
Fig. 2.8, Back-of-Cab Access
Vehicle Access
2.7

touch any part of the exhaust system other than
the exhaust-mounted grab handle, if equipped, or
severe burns could occur.
1. Facing the center of the deck plate, grasp the
grab handle with both hands. Reach up as far as
is comfortable.
2. Place one foot on the bottom step and pull your-
self up.
3. Place your other foot on the top step.
4. Move your lower hand to a higher position on the
grab handle.
5. Step onto the deck plate.
Exiting the Back-of-Cab Area
1. Face the center of the vehicle and grasp the
grab handle with both hands.
2. Place one foot at a time on the top step.
3. Move your upper hand to a lower position on the
grab handle.
4. Move one foot to the bottom step.
5. Step to the ground with your upper foot first.
Opening the Grille
CAUTION
Step back from the grille when opening it. The
grille can open quickly and could hit a person,
possibly resulting in personal injury.
Opening the grille allows the driver access to the en-
gine oil dipstick, the coolant fill cap, and the wind-
shield washer reservoir. To open the grille, face the
front of the truck, reach through the latch access
openings on either side of the grille, and release the
two latches. See Fig. 2.9. Grip the grille firmly with
both hands and lift. Pull the interior straps down to
pull the grille shut. See Fig. 2.10.
Make sure the grille is shut and latched securely.
NOTE: On some vehicles, the access latches
are located behind the lower corners of the
grille.
05/23/2011 f602457
Fig. 2.9, Opening the Grille
05/23/2011 f602458
1
1A
A. Use this strap to close the grille.
1. Grille Latches
Fig. 2.10, Grille (shown fully open)
Vehicle Access
2.8

Cab Tilt System
The hydraulic tilt system is used to tilt and lower the
cab. An electric motor is used to activate the hydrau-
lic tilt pump. The tilt pump can also be operated
manually if necessary. A pump handle is located in
the baggage compartment for manually working the
tilt pump.
The hydraulic cab latches open automatically when
the cab is tilted. When the cab is returned to the op-
erating position, the latch hooks lock automatically.
An indicator pin on the outboard side of each latch
protrudes when the latch is unlocked, and recedes
when the latch is locked. See Fig. 2.11.
NOTICE
Do not use either the telescoping tube assembly
or the hydraulic tilt cylinder as a step or hand-
hold; you could damage the transmission, tele-
scoping tube assembly, or the tilt cylinder.
Tilting the Cab
WARNING
Before tilting the cab, make sure there is ad-
equate clearance in front of the vehicle and that
the area is free of people and objects.
Do not tilt the cab with the engine running. Tilt-
ing the cab could engage the transmission. If the
engine is running, the vehicle could move, caus-
ing an accident that could result in personal in-
jury or property damage.
The hydraulic tilt system is a cab-tilting, not a
cab-holding device. Do not leave the vehicle un-
attended unless the cab is fully tilted or resting
against the safety stop. Holding the cab in place
with the hydraulic tilt system may result in per-
sonal injury or death and/or property damage.
IMPORTANT: Before tilting or lowering the cab,
read the warning label on the tilt pump and the
tilt instructions label on the exhaust stack.
NOTICE
Before tilting the cab, make sure the vehicle is
parked on level ground, both side-to-side and
fore-to-aft. Tilting the cab while the vehicle is
parked on a slope may damage the cab mounts
and prevent you from returning the cab to the
operating position.
1. Park the vehicle on a level surface, place the
vehicle in neutral, shut down the engine, and set
the parking brake. Chock the tires.
WARNING
Objects falling in the cab or a door flying open
could damage the vehicle or cause personal in-
jury.
2. Secure all loose articles in the cab and bunk,
then activate the tilt system power switch on the
dash. See Fig. 2.12.
3. Exit the cab and make sure the doors are fully
latched.
10/19/94 f310441
Fig. 2.11, Indicator Pin
f61117904/24/2012
Fig. 2.12, Cab Tilt Switch
Vehicle Access
2.9

NOTICE
Make sure the grille is open before tilting the cab
(vehicles built from June 2011). Leaving the grille
closed while tilting the vehicle will cause damage
to the grille.
IMPORTANT: Vehicles built February 2012 and
later are equipped with a safety mechanism that
prevents the tilt pump from operating when the
grille is not open.
4. Fully open the grille.
5. Check the cab travel path for obstructions.
6. Move the pump control lever to the TILT position.
See Fig. 2.13.
7. Press and hold the button on the pump to disen-
gage the hold-down latches and begin tilting the
cab.
IMPORTANT: Check the indicator pin on each
cab latch. The latches have disengaged if the
pins are out. See Fig. 2.11.
DANGER
Make sure the safety stop is engaged on the right
tilt cylinder rod. If the safety stop isn’t engaged,
and the cab should drop, the result could be seri-
ous injury or death.
8. When the cab reaches a 30-degree angle, stop
tilting the cab by letting go of the pump button.
Engage the safety stop on the right tilt cylinder
rod. See Fig. 2.14. The safety stop prevents the
cab from accidentally dropping below this
position.
9. To tilt the cab all the way, press and hold the
button on the pump until the cab nears a 45-
degree angle (the balance point). See Fig. 2.15.
Once the cab goes beyond 45 degrees, release
the button on the pump and move the tilt pump
lever to the RETURN position in order to slow
cab descent.
IMPORTANT: If the cab stops after it has gone
beyond 45 degrees, don’t force it down with the
tilt pump. The velocity fuses have locked the tilt
cylinders. To unlock them, see Hydraulic
Lockup, below.
Returning the Cab to Operating
Position
DANGER
Stay completely clear of the cab’s travel path at
all times. Once the safety stop has been re-
leased, don’t lean over the frame rails, the en-
gine, or the transmission for any reason. To do
so could result in serious injury or death.
1. Move the pump lever to the RETURN position.
05/07/2012 f602470
12
3
1. Pump Control Lever
2. Hydraulic Tilt Pump
3. Pump Activation
Button
Fig. 2.13, Cab Tilt Pump
04/15/93 f310357a
1
2
1. Tilt Cylinder Rod 2. Safety Stop
Fig. 2.14, Safety Stop Engaged
Vehicle Access
2.10

2. Check the cab travel path for obstructions.
3. Press and hold the button on the pump to begin
moving the cab to the operating position.
NOTE: To slow the cab descent, reverse the tilt
pump lever after the cab passes the balance
point.
4. Allow the cab to lower to the safety stop, then
move the safety stop away from the right tilt cyl-
inder rod. See Fig. 2.16.
5. Press and hold the button on the pump until the
cab nears a 45-degree angle (the balance point).
See Fig. 2.15. Once the cab goes beyond 45
degrees, release the button on the pump and
move the tilt pump lever to the TILT position in
order to slow cab descent.
IMPORTANT: If the cab stops after it has gone
beyond 45 degrees, don’t force it down with the
tilt pump. The safety stop is in the locked posi-
tion or, the velocity fuses have locked the tilt
cylinders. Release the safety stop or, to unlock
the fuses, see Hydraulic Lockup, below.
6. Move the pump lever to the RETURN position.
7. Check the indicator pin on each cab latch. The
latches are locked when the pins have moved
back into the piston and cylinder spring assem-
bly.
NOTE: Maintain the hydraulic oil level at the oil
fill plug. Add oil only when the cab is in the op-
erating position. Use only Freightliner-approved
hydraulic oil. See Group 60 of the Century
Class Trucks Maintenance Manual.
8. Close the grille.
9. Switch off the tilt system dash switch.
Hydraulic Lockup
Hydraulic lockup can occur for the following reasons:
•very cold temperatures
•use of the wrong hydraulic fluid
•air in the system
•sudden cab movement
•ruptured hydraulic line
•continued pumping after the cab goes over-
center
•tilt strut in locked position while lowering the
cab
03/27/98 f000896
A
B
C
A. Upright or Operating Position
B. 45° Tilted Position (balance position)
C. Full-Tilt Position
Fig. 2.15, Cab Tilt Positions
04/15/93 f310358a
1
2
3
1. Safety Stop
2. Tilt Cylinder Rod
3. Tilt Cylinder
Fig. 2.16, Safety Stop Disengaged
Vehicle Access
2.11

Any of the above situations will lock the tilt cylinders.
To unlock the cylinders, the cab must be moved in
the opposite direction of travel.
For example, if the cab is moving toward the full-tilt
position when the lockup occurs, move the control
lever to RETURN and work the pump a few strokes
to unlock the cylinders. Move the control lever to the
TILT position and allow the cab to descend to a full-
tilt position.
If the cab is moving toward the lowered (operating)
position when the lockup occurs, move the control
lever to TILT and work the pump a few strokes to
unlock the cylinders. Move the control lever to RE-
TURN and allow the cab to descend to the operating
position.
Vehicle Access
2.12

3
Electrical System
Circuit Breaker/Relay Panel ......................................................... 3.1
Low Voltage Disconnect Feature ..................................................... 3.1
Cab Load Disconnect Switch ........................................................ 3.1
Battery Access ................................................................... 3.1

Circuit Breaker/Relay Panel
The circuit breaker/relay panel is located in the dash
in front of the passenger seat. To access the com-
partment, press the button labeled PRESS and lift
the top dash panel. See Fig. 3.1.
Low Voltage Disconnect
Feature
The low voltage disconnect (LVD) feature protects
the batteries from excessive discharge by discon-
necting certain circuits from battery power supply.
This allows the batteries to maintain acceptable
charge to restart the vehicle. The LVD system turns
off cab and sleeper accessories when voltage drops
to 12.3 volts. An alarm sounds for one minute before
accessories are turned off. If no action is taken within
that minute, the LVD module will shut off power to
predetermined cab and sleeper circuits and illuminate
an LED indicator on the LVD module located inside
the right-hand door frame behind the seat. These
circuits will remain off until the LVD measures 13.0
volts on the electrical system, which can be done by
starting the engine. After the engine is started, the
system will reset.
All vehicles equipped with LVD should have a sticker
on the dash indicating the presence of the system.
Another sticker is located inside the right-hand door
frame behind the seat, along with the LVD module.
Cab Load Disconnect Switch
WARNING
Turning the cab load disconnect switch (CLDS) to
the off position does not disconnect the connec-
tion between the battery and the starter. To work
on the vehicle safely, the negative leads must be
disconnected from the battery.
IMPORTANT: The ignition should be turned off
before turning the CLDS to on or off.
The CLDS is used to avoid excessive draw on the
battery when the vehicle is parked for an extended
period of time by disconnecting (or opening) the con-
nection between the battery and the most of the ve-
hicle electrical system. See Fig. 3.2.
The CLDS may be mounted:
•inside the cab on the outboard side of the
driver’s seat;
•at the battery box;
•outboard on the left frame rail.
Battery Access
NOTE: On vehicles with vertically-mounted muf-
flers, tilt the cab slightly to open the battery box.
05/07/2012 f545897
A
A. Press the button and lift the top dash panel
Fig. 3.1, Circuit Breaker/Relay Panel (right-hand drive
shown)
06/19/2007 f545071
Fig. 3.2, Cab Load Disconnect Switch
Electrical System
3.1