Landoll 600C Series User manual

MODEL 600C SERIES
SEMITRAILER
OPERATOR’S MANUAL
1900 North Street
Marysville, KS 66508
[phone]
F-477-0808 08/08

MODEL 600C SERIES
SEMITRAILER
OPERATOR’S MANUAL
PURCHASED FROM: DATE / /
ADDRESS:
PHONE NO.: SERIAL NO.:
i

REPORTING SAFETY DEFECTS
If you believe that your vehicle has a defect which could cause a crash or could
cause injury or death, you should immediately inform the National Highway Traffic
Safety Administration (NHTSA) in addition to notifying Landoll Manufacturing.
If NHTSA receives similar complaints, it may open an investigation, and if it
finds that a safety defect exists in a group of vehicles, it may order a recall and
remedy campaign. However, NHTSA cannot become involved in individual prob-
lems between you, your dealer, or Landoll Manufacturing.
To contact NHTSA, you may either call the Auto Safety Hotline toll-free at 1-800-
424-9393 (or 366-0123 in Washington, D.C. area) or write to: NHTSA, U.S. Depart-
ment of Transportation, Washington, D.C. 20590. You can also obtain other infor-
mation about motor vehicle safety from the Hotline.
In the event of a defect or problem with your LANDOLL equipment, please notify
LANDOLL CORPORATION:
LANDOLL CORPORATION
SALES AND SERVICE
1900 NORTH STREET
MARYSVILLE, KANSAS 66508
OR PHONE:
1-800-HAULOLL
(1-800-428-5655)
FAX NO.: [phone]
FOR REPLACEMENT PARTS:
[phone]
1-800-423-4320
FAX NO.: [phone]
ii

TABLE OF CONTENTS
SECTION DESCRIPTION PAGE NO.
1 INTRODUCTION .......................................1-1
2 STANDARD SPECIFICATIONS.............................2-1
3 OPERATING INSTRUCTIONS..............................3-1
3-1 GENERAL ...........................................3-1
3-2 PRE-COUPLING OF SEMITRAILER AND TRACTOR ...........3-3
3-3 COUPLING OF THE TRACTOR TO THE SEMITRAILER ........3-4
3-4 CONNECTING TRACTOR SERVICES TO THE SEMITRAILER.....3-4
3-5 TRACTOR AND SEMITRAILER CHECK-OUT .................3-5
3-6 TOWING THE SEMITRAILER .............................3-7
3-7 PARKING THE TRAILER ................................3-8
3-8 UNCOUPLING TOWING VEHICLE FROM SEMITRAILER ........3-9
3-9 TRAILER TILT LEVER ..................................3-9
3-10 AXLE CONTROL LEVER ...............................3-10
3-11 SWINGOUT OUTRIGGER PLATFORM EXTENSION SET-UP
(OPTION)...........................................3-10
3-12 PULL OUT EXTENSIONS...............................3-11
3-13 LOADING PROCEDURE ...............................3-12
3-14 UNLOADING PROCEDURE .............................3-15
3-15 WORK LIGHT (OPTIONAL) .............................3-17
3-16 WINCH CONTROLS...................................3-17
3-17 DOCK LEVELER CONTROL OPERATION (OPTION) ..........3-19
3-18 HYDRAULIC POWER SUPPLY ENGINE OPERATION (OPTION) . . 3-22
3-19 AIR RIDE OPERATION ................................3-23
3-20 BULKHEAD (OPTION) .................................3-24
3-21 REMOTE CONTROL (OPTION) ..........................3-25
3-22 REAR IMPACT GUARD SYSTEM .........................3-27
3-23 ANTI-LOCK BRAKE SYSTEM (ABS) ......................3-28
3-24 COLD WEATHER OPERATION ..........................3-29
3-25 HOT WEATHER OPERATION ...........................3-29
4 MAINTENANCE AND LUBRICATION ........................4-1
4-1 MAINTENANCE SCHEDULE .............................4-1
4-2 MAINTENANCE PROCEDURES ...........................4-5
4-3 GOOSENECK, FRAME, AND DECK ........................4-8
4-4 HYDRAULIC SYSTEM ..................................4-9
4-5 ELECTRICAL SYSTEM ................................4-13
4-6 SUSPENSION MAINTENANCE...........................4-13
4-7 ALIGNMENT ........................................4-17
4-8 BRAKE SYSTEM MAINTENANCE ........................4-20
4-9 HUB AND DRUM MAINTENANCE ........................4-27
4-10 WHEEL BEARING LUBRICATION AND ADJUSTMENT.........4-29
4-11 TIRE MAINTENANCE..................................4-30
4-12 WINCHES ..........................................4-32
4-13 DOCK LEVELERS ....................................4-32
4-14 CRANK LANDING GEAR ...............................4-34
5 TROUBLESHOOTING ...................................5-1
iii

iv
SAFETY PRECAUTIONS
THIS IS THE SAFETY ALERT SYMBOL. IT IS USED TO ALERT YOU
TO POTENTIAL INJURY HAZARDS. OBEY ALL SAFETY MESSAGES
THAT FOLLOW THIS SYMBOL TO AVOID POSSIBLE INJURY OR
DEATH.
DANGER DANGER INDICATES AN IMMINENTLY HAZARDOUS SITUA-
TION WHICH, IF NOT AVOIDED, WILL RESULT IN DEATH OR
SERIOUS INJURY.
WARNING WARNING INDICATES A POTENTIALLY HAZARDOUS SITUA-
TION WHICH, IF NOT AVOIDED, COULD RESULT IN DEATH OR
SERIOUS INJURY.
CAUTION CAUTION INDICATES A POTENTIALLY HAZARDOUS SITUA-
TION WHICH, IF NOT AVOIDED, MAY RESULT IN MINOR OR
MODERATE INJURY.
CAUTION CAUTION USED WITHOUT THE SAFETY ALERT SYMBOL INDI-
CATES A POTENTIALLY HAZARDOUS SITUATION WHICH, IF
NOT AVOIDED, MAY RESULT IN PROPERTY DAMAGE.

1INTRODUCTION
This manual provides operating, servicing, and maintenance instructions, for Model 600C semitrailer,
manufactured by Landoll Corporation, Marysville, Kansas 66508.
SECTION 1 gives basic instructions on the use of this manual.
SECTION 2 gives specifications for the trailer, including measurements and component speci-
fications. A Standard Bolt Torque Table is provided to give guidelines for bolt
torques to be used when servicing this product.
SECTION 3 gives instructions for the proper operation of the equipment.
SECTION 4 gives general maintenance procedures, a maintenance schedule, and a lubrication
schedule. Improper maintenance will void your warranty.
IF YOU HAVE ANY QUESTIONS CONTACT:
LANDOLL CORPORATION
1900 NORTH STREET
MARYSVILLE, KANSAS 66508
or phone:
[phone] or
[phone]
or FAX:
[phone]
SECTION 5 is a troubleshooting guide to aid in diagnosing and solving problems with the
trailer.
PARTS LIST is a separate manual showing the various assemblies, subassemblies, and sys-
tems. Refer to that manual when ordering Landoll replacement parts. Order parts
from your Landoll dealer.
WARRANTY The Warranty Registration form is located with the product documents. Fill it out
and mail it within 15 days of purchase. The Warranty is printed inside the front
cover.
NOTE: IMPROPER ASSEMBLY, MODIFICATION, OR MAINTENANCE OF YOUR
LANDOLL MACHINE CAN VOID YOUR WARRANTY.
COMMENTS Address comments or questions regarding this publication to:
LANDOLL CORPORATION
1900 NORTH STREET
MARYSVILLE, KANSAS 66508
ATTENTION: PUBLICATIONS - DEPT. 55
1-1

2STANDARD SPECIFICATIONS
CAPACITY*:
TANDEM AXLE: .....................................70,000 LB. DISTRIBUTED
STANDARD FRAME DESIGN (660 MODEL) . . 50,000 LB. CONCENTRATED IN 10’
STANDARD FRAME DESIGN (670 MODEL) . . 40,000 LB. CONCENTRATED IN 10’
TRIPLE AXLE: .....................................100,000 LB. DISTRIBUTED
STANDARD FRAME DESIGN (610 MODEL) . . 70,000 LB. CONCENTRATED IN 16’
SWING OUT OVERWIDTHS AND PULL OUT EXTENSION MAXIMUM CAPACITY IS ONE HALF FRAME
CAPACITY LISTED ABOVE.
GOOSENECK:..................................................... HYDRAULIC TILT
KING PIN SETTING: ...........................................................21"
UNDERCARRIAGE TRAVEL: ...................................................17’-8"
GROUND LOAD ANGLE:
LOW LOAD ANGLE ...................................................6.5°
MAXIMUM TILT ANGLE ................................................15°
DOCK LEVELER CAPACITY: .........................................1PAIR 62,000 LB.
............................................2PAIR 62,000 LB. (124,000 LB.)
HYDRAULIC HOOKUP:
QUICK COUPLERS ................................FLAT FACE 3/4" BODY SIZE
MAXIMUM OPERATING PRESSURE ..................................2500 PSI
OPERATING FLOW ................................................17GPM
ELECTRICAL HOOKUP: ...........................................7-WAY CONNECTOR
AIR HOOK UP: ..........................................COLOR CODED GLAD HANDS
SPECIFIC BOLT TORQUES
AIR RIDE SUSPENSION:
EQUALIZER BEAM PIVOT AND ADAPTER BOLTS
DESIGNATED W/ NEWAY ON BOLT HEAD .......................800FT.-LBS.
DESIGNATED W/ HOLLAND NEWAY ON BOLT HEAD ..............550FT.-LBS.
SHOCK ABSORBER MOUNTING ..................................150FT.-LBS.
AIR SPRING MOUNTING: 1/2" .....................................35FT.-LBS.
3/4" .....................................35FT.-LBS.
WHEEL FASTENERS - ALL MODELS:
OUTER SPINDLE NUTS .....................................250-400 FT.-LBS.
PILOT WHEEL NUTS........................................450-500 FT.-LBS.
* CAPACITY RATINGS ARE FRAME CAPACITIES ONLY. ACTUAL LOAD CAPACITIES MAY BE RE-
STRICTED BY FACTORS SUCH AS GROSS AXLE WEIGHT RATINGS (GAWR) OR STATE AND FED-
ERAL REGULATIONS.
2-1

2-2
LANDOLL CORPORATION
GENERAL TORQUE SPECIFICATIONS (REV. 4/97)
THIS CHART PROVIDES TIGHTENING TORQUES FOR GENERAL PURPOSE APPLICATIONS WHEN SPECIAL TORQUES ARE NOT SPECIFIED
ON PROCESS OR DRAWING.
ASSEMBLY TORQUES APPLY TO PLATED NUTS AND CAPSCREWS ASSEMBLED WITHOUT SUPPLEMENTAL LUBRICATION (AS RECEIVED
CONDITION). THEY DO NOT APPLY IF SPECIAL GRAPHITE MOLY-DISULFIDE OR OTHER EXTREME PRESSURE LUBRICANTS ARE USED.
WHEN FASTENERS ARE DRY (SOLVENT CLEANED), ADD 33% TO AS RECEIVED CONDITION TORQUE.
BOLT HEAD IDENTIFICATION MARKS INDICATE GRADE AND MAY VARY FROM MANUFACTURER TO MANUFACTURER.
THICK NUTS MUST BE USED ON GRADE 8 CAPSCREWS.
USE VALUE IN [ ] IF USING PREVAILING TORQUE NUTS.
TORQUE IS SPECIFIED IN FOOT POUNDS
UNC
Size SAE Grade
2
SAE
Grade
5
SAE
Grade
8
UNF
Size SAE Grade
2
SAE
Grade
5
SAE
Grade
8
1/4-20 4 [5] 6 [7] 9 [11] 1/4-28 5 [6] 7 [9] 10 [12]
5/16-18 8 [10] 13 [16] 18 [22] 5/16-24 9 [11] 14 [17] 20 [25]
3/8-16 15 [19] 23 [29] 35 [43] 3/8-24 17 [21] 25 [31] 35 [44]
7/16-14 24 [30] 35 [43] 55 [62] 7/16-20 27 [34] 40 [50] 60 [75]
1/2-13 35 [43] 55 [62] 80 [100] 1/2-20 40 [50] 65 [81] 90 [112]
9/16-12 55 [62] 80 [100] 110 [137] 9/16-18 60 [75] 90 [112] 130 [162]
5/8-11 75 [94] 110 [137] 170 [212] 5/8-18 85 [106] 130 [162] 180 [225]
3/4-10 130 [162] 200 [250] 280 [350] 3/4-16 150 [188] 220 [275] 320 [400]
7/8-9 125 [156] 320 [400] 460 [575] 7/8-14 140 [175] 360 [450] 500 [625]
1-8 190 [237] 408 [506] 680 [850] 1-14 210 [263] 540 [675] 760 [950]
1-1/8-7 270 [337] 600 [750] 960 [1200] 1-1/8-12 300 [375] 660 [825] 1080 [1350]
1-1/4-7 380 [475] 840 [1050] 1426 [1782] 1-1/4-12 420 [525] 920 [1150] 1500 [1875]
1-3/8-6 490 [612] 110 [1375] 1780 [2225] 1-3/8-12 560 [700] 1260 [1575] 2010 [2512]
1/1-2-6 650 [812] 1460 [1825] 2360 [2950] 1/1-2-12 730 [912] 1640 [2050] 2660 [3325]
METRIC
COARSE THREAD METRIC CLASS 10.9 FASTENERS AND CLASS 10.0 NUTS AND THROUGH HARDENED FLAT WASHERS, PHOSPHATE
COATED, ROCKWELL “C” 38-45.
USE VALUE IN [ ] IF USING PREVAILING TORQUE NUTS.
Nominal
Thread
Diameter
mm
Standard Torque Nominal
Thread
Diameter
mm
Standard Torque
Newton-
Meters Foot- Pounds Newton- Meters Foot- Pounds
6 10 [14] 7 [10] 20 385 [450] 290 [335]
7 16 [22] 12 [16] 24 670 [775] 500 [625]
8 23 [32] 17 [24] 27 980 [1105] 730 [825]
10 46 [60] 34 [47] 30 1330 [1470] 990 [1090]
12 80 [101] 60 [75] 33 1790 [1950] 1340 [1450]
14 125 [155] 90 [115] 36 2325 [2515] 1730 [1870]
16 200 [240] 150 [180] 39 3010 [3210] 2240 [2380]
18 275 [330] 205 [245]
Table 2-1 General Torque Specifications

2-3
LANDOLL CORPORATION
HYDRAULIC FITTING TORQUE SPECIFICATIONS
37oJIC, ORS, & ORB (REV. 07/2008)
THIS CHART PROVIDES TIGHTENING TORQUES FOR HYDRAULIC FITTING APPLICATIONS WHEN SPECIAL TORQUES ARE NOT SPECIFIED
ON PROCESS OR DRAWING.
ASSEMBLY TORQUES APPLY TO PLATED CARBON STEEL AND STAINLESS STEEL FITTINGS ASSEMBLED WITHOUT SUPPLEMENTAL
LUBRICATION (AS RECEIVED CONDITION).THEY DO NOT APPLY IF SPECIAL GRAPHITE MOLY-DISULFIDE OR OTHER EXTREME PRESSURE
LUBRICANTS ARE USED.
BRASS FITTINGS AND ADAPTERS - 65% OF THE TORQUE VALUE FOR STEEL. STAINLESS STEEL, ALUMINUM AND MONEL - THREADS ARE
TO BE LUBRICATED.
TORQUE IS SPECIFIED IN FOOT POUNDS
AEROQUIP BRAND FITTINGS
Dash Size 37 Degree JIC O-Ring (ORS) O-Ring Boss (ORB)
-4 11-12 10-12 14-16
-5 15-16 — 18-20
-6 18-20 18-20 24-26
-8 38-42 32-35 50-60
-10 57-62 46-50 72-80
-12 79-87 65-70 125-135
-14 — — 160-180
-16 108-113 92-100 200-220
-20 127-133 125-140 210-280
-24 158-167 150-165 270-360
-32 245-258 — —
GATES BRAND FITTINGS
Dash Size 37 Degree JIC O-Ring (ORS) O-Ring Boss (ORB)
-4 10-11 10-12 14-16
-5 13-15 — —
-6 17-19 18-20 24-26
-8 34-38 32-40 37-44
-10 50-56 46-56 50-60
-12 70-78 65-80 75-83
-14 — 65-80 —
-16 94-104 92-105 111-125
-20 124-138 125-140 133-152
-24 156-173 150-180 156-184
-32 219-243 — —
PARKER BRAND FITTINGS
Dash Size 37 Degree JIC O-Ring (ORS) O-Ring Boss (ORB)
-4 11-13 15-17 13-15
-5 14-16 — 21-23
-6 20-22 34-36 25-29
-8 43-47 58-62 40-44
-10 55-65 100-110 57.5-62.5
-12 80-90 134-146 75-85
-16 115-125 202-218 109-121
-20 160-180 248-272 213-237
-24 185-215 303-327 238-262
-32 250-290 — 310-340
Table 2-2 Hydraulic Fitting Torque Specifications

3OPERATING INSTRUCTIONS
3-1 GENERAL
This section supplies information for operation
of the semitrailer. It describes and locates controls
and gives general operation procedures. Read all
instructions, warnings, cautions, and danger notes
before attempting to operate the semitrailer. Op-
erators must have proper training before operating
the semitrailer (See Figures 3-1 and 3-2 for loca-
tion of semitrailer parts).
WARNING
DO NOT OPERATE THE SEMITRAILER
WITH ANY KNOWN FAULT THAT
MIGHT ENDANGER THE OCCUPANTS,
NEARBY WORKERS, OTHER TRAFFIC,
THE LOAD, OR THE EQUIPMENT.
WARNING
DO NOT OPERATE THE SEMITRAILER
UNTIL YOU HAVE READ THE OPERA-
TOR’S MANUAL AND COMPLETELY
UNDERSTAND THE PROPER USE AND
FUNCTION OF ALL CONTROLS. IM-
PROPER USE CAN CAUSE PERSONAL
INJURY, DAMAGE TO YOUR SEMI-
TRAILER AND CARGO, AND CAUSE
TIME-CONSUMING BREAKDOWNS.
3-1.1 Landing Gear
The landing gear consists of two legs with a
tube telescoping within another tube. Crank style
is standard. Pin drop or hydraulically operated are
optional.
3-1.2 Parking Brake
The parking brakes are automatically applied
by spring pressure with the air actuators of the
braking system when air pressure in the emer-
gency line drops below 50 psi. This may be done
within the truck using the trailer parking/emergency
valve or by disconnecting the emergency glad-
hands.
3-1.3 Air Brake System
The air brake system of the semitrailer is oper-
ated from the towing vehicle after coupling. The
towing vehicle’s air system must be coupled to the
semitrailer and charged to 90 psi minimum before
the brakes can adequately function.
3-1.4 Anti-Lock Brake System (ABS)
The Anti-Lock Brake System of the semitrailer
is constant powered by the auxiliary (blue) circuit
of the seven way electrical connector, with backup
power from the stop lamp (red) circuit, and ground
through the white wire. It is necessary that the blue
circuit is hot when the tractor key switch is on. The
blue circuit on the trailer may not be used to power
any additional auxiliary devices while the semi-
trailer is moving forward. If a fault exists in the
ABS, normal braking will occur, but the wheels
may lock. Service the ABS as soon as possible.
CAUTION
THE AUXILIARY (BLUE) CIRCUIT IS
FOR POWERING THE SEMITRAILER
ABS. THIS CIRCUIT MUST BE HOT
WHEN THE TRACTOR KEY SWITCH IS
ON. NO OTHER ELECTRICAL DEVICES
MAY BE POWERED BY THIS CIRCUIT
WHILE THE SEMITRAILER IS MOVING
FORWARD.
CAUTION
IF A FAULT EXISTS IN THE SEMI-
TRAILER ABS, NORMAL BRAKING
WILL OCCUR, BUT WHEELS MAY
LOCK AND SERVICE THE ABS AS
SOON AS POSSIBLE.
3-1

3-2
Figure 3-1 Front Trailer Terminology
Figure 3-2 Rear Trailer Terminology

3-1.5 Electrical
The only electrical operation required of the
operator is interconnection of the towing vehicle
electrical cable plug with the semitrailer electrical
receptacle.
It is necessary that the tractor blue wire be
connected to the appropriate electrical source on
the tractor.
3-1.6 Hydraulic
Most controls are located on the driver’s side
of the trailer. A hydraulic pump must be coupled to
the trailer hydraulic system, or the optional hydrau-
lic engine package started, before any hydraulic
controls can function. The hydraulic system is de-
signed to operate at 2500 psi maximum pressure
and approximately 17 gpm flow capacity.
3-2 PRE-COUPLING OF SEMITRAILER AND TRACTOR
3-2.1 Slowly back the tractor/truck (towing ve-
hicle) up to the front end of the semitrailer so
the kingpin of the semitrailer is centered be-
tween the tractor fifth wheel jaws. Stop the
towing vehicle just inches ahead of the semi-
trailer. Set tractor parking brake.
3-2.2 Check the semitrailer king pin plate. It
should be in a horizontal position. The king
pin plate should be the same height, to
slightly lower, than the latch area of the fifth
wheel plate of the towing vehicle. If neces-
sary, raise or lower the front of trailer by
cranking the two speed landing gear up or
down. If you have the optional pin drop land-
ing gear or the hydraulic operated landing
gear, then connect the tractor hydraulic lines,
or start the semitrailer hydraulic power en-
gine. Use the TRAILER TILT lever (See
Section 3-9) or hydraulic landing gear (See
Section 3-5.1-c.) to raise or lower the king-
pin plate sufficiently to set proper coupling
height. Drain all air and moisture from the
towing vehicle air brake system following
towing vehicle manufacturer’s instructions.
3-2.3 Connect the service and emergency air
hoses of the towing vehicle to their respec-
tive gladhand on the front of the semitrailer;
red emergency line to the gladhand with the
“EMERGENCY” tag, and the blue service
line to the gladhand with the “SERVICE” tag
(See Figure 3-3). Chock the semitrailer
wheels before activating the semitrailer air
supply valve in the towing vehicle. Set the
parking brakes.
WARNING
FAILURE TO CHOCK SEMITRAILER
WHEELS COULD ALLOW MOVEMENT
OF THE SEMITRAILER RESULTING IN
SERIOUS PERSONAL INJURY, DEATH,
OR DAMAGE TO PROPERTY IN ITS
PATH.
3-2.4 Check the air brake operations of the
semitrailer as follows:
a. Apply brakes and inspect brake action on all
wheels for prompt application.
b. Release brakes. All brakes should release
immediately. Air pressure should discharge
quickly from the relay emergency valve.
c. Disconnect the emergency air line from the
semitrailer gladhand. Trailer brakes should
promptly set.
d. Reconnect the emergency air line to the
semitrailer and activate the semitrailer air
supply valve. The semitrailer brakes should
set.
3-3
Figure 3-3 Service Hookups

3-3 COUPLING OF THE TRACTOR TO THE SEMITRAILER
DANGER
KEEP ALL PERSONNEL CLEAR OF
FRONT, REAR, AND SIDES OF TOW-
ING VEHICLE AND SEMITRAILER DUR-
ING COUPLING, COMPONENT OPERA-
TIONS, AND UNCOUPLING. FAILURE
TO STAY CLEAR CAN RESULT IN SE-
RIOUS PERSONAL INJURY OR DEATH.
3-3.1 Verify the semitrailer wheels are
chocked and brakes function properly.
3-3.2 Make certain the coupler of the towing
vehicle’s fifth wheel is open by pulling the
latch handle.
3-3.3 Slowly back the towing vehicle so its
fifth wheel contacts the front of the king pin
plate on the semitrailer and slips under it.
Continue backing until the fifth wheel coupler
locks onto the semitrailer kingpin.
CAUTION
PUSHING THE SEMITRAILER BACK-
WARDS CAN DAMAGE PARKING
STANDS.
3-3.4 Verify the vehicle coupling is secure by
attempting to pull the tractor forward a few
inches. If the tractor disconnects from the
semitrailer, locate source of coupling failure;
repair before continuing; and repeat Section
3-3.3 and 3-3.4.
3-3.5 Check that the towing vehicle couples
securely to the semitrailer before setting tow-
ing vehicle and semitrailer parking brakes.
IMPORTANT
KEEP BRAKES ENGAGED FOR REMAINDER
OF HOOKUP, CHECKOUT PROCEDURES AND
PARK
3-4 CONNECTING TRACTOR SERVICES TO THE SEMITRAILER
3-4.1 Connect the towing vehicle 7-pole elec-
trical plug to the electrical receptacle on the
front of the semitrailer (See Figure 3-3).
IMPORTANT
THE KEY ON THE PLUG AND THE KEYWAY IN
THE SOCKET MUST BE PROPERLY ALIGNED
BEFORE INSERTING THE PLUG INTO THE
SEMITRAILER SOCKET.
CAUTION
HYDRAULIC OPERATING PRESSURES
GREATER THAN 2500 PSI CAN CAUSE
DAMAGE TO THE TRAILER.
3-4.2 If you have not already done so, con-
nect the tractor hydraulic lines to the semi-
trailer unless your semitrailer is equipped
with the self-contained hydraulic power en-
gine package.
IMPORTANT
SOME OIL MAY NEED TO BE REMOVED FROM
THE TRACTOR RESERVOIR TO ALLOW ROOM
FOR 12 GALLONS OF ADDITIONAL OIL DIS-
PLACED FORM THE TRAILER HYDRAULIC
SYSTEM.
3-4.3 Air Lines: See Section 3-2.
3-4

3-5 TRACTOR AND SEMITRAILER CHECK-OUT
WARNING
FAILURE TO PROPERLY SET AND
CHECK PARKING BRAKE, AND
CHOCK WHEELS WHEN PARKING
AND DURING STORAGE, COULD AL-
LOW MOVEMENT OF THE
TRUCK/SEMITRAILER RIG RESULT-
ING IN SERIOUS PERSONAL INJURY,
DEATH, OR DAMAGE TO PROPERTY
IN ITS PATH.
3-5.1 With hydraulic power operating, raise
landing gear:
a. For pin drop landing gear, activate the
TRAILER TILT lever “UP” (See Figure 3-4)
until weight is off the landing gear. Raise
landing gear. (See Section 3-9 for operation
of TRAILER TILT lever.) Secure each leg
with a park stand retaining pin in the full “up”
position before transporting.
CAUTION
ALWAYS GRIP CRANK HANDLE SE-
CURELY WITH BOTH HANDS. NEVER
SHIFT LANDING GEAR UNDER LOAD,
LEAVE THE GEARS IN NEUTRAL OR
LEAVE THE CRANK UNSECURED.
b. For crank landing gear, retract landing gear
by turning hand crank on control panel coun-
terclockwise. Use low gear until the load is off
the landing gear. Then shift to high gear and
continue cranking until fully retracted. Leave
the landing gear in high gear.
c. For hydraulic landing gear, remove the pin
from each landing gear leg. Retract landing
gear using lever (See Section 3-5.2) on en-
gine control panel (See Figure 3-11). Secure
each leg with a pin in fully retracted position.
3-5.2 The optional HYDRAULIC LANDING
GEAR lever is located on the left side En-
gine Control Panel (See Figure 3-11). It has
three positions:
RETRACT In this position, the landing gear are
pulled up off the ground.
CENTER This is neutral position.
EXTEND In this position, the landing gear are
lowered to the ground.
CAUTION
1. LANDING GEAR LEGS MUST BE
FULLY RETRACTED AND IF YOU HAVE
THE OPTIONAL PIN DROP LANDING
GEAR OR THE HYDRAULIC LANDING
GEAR, SECURED WITH PINS BEFORE
OPERATING OR MOVING SEMI-
TRAILER.
2. IF SEMITRAILER IS LOADED WHEN
OPERATING LANDING GEAR, LOAD
MUST BE CENTERED ON THE
TRAILER.
3. DO NOT TILT SEMITRAILER DOWN
WITH LANDING GEAR ON GROUND.
3-5.3 Activate the TRAILER TILT lever (See
Section 3-9) “DOWN” until the semitrailer is
fully lowered. Hold semitrailer tilt lever in the
down position until hydraulic system works
against the bottomed out Hydraulic Tilt Cylin-
ders.
3-5.4 Determine that the traveling undercar-
riage is completely slid back to transport po-
sition. Hold AXLE CONTROL lever (See
Section 3-10) in the transport position until
hydraulic system works against the fully ex-
tended hydraulic telescopic axle cylinder.
Shut off hydraulic power.
3-5.5 Check the operation of all lights and sig-
nals on the semitrailer for proper response to
switch positions (stop, right turn, left turn,
and clearance). Check operation of remote
function if present.
3-5

3-6
WINCH CLUTCH AND
TENSION CONTROL
LEVER
LEVER
AXLE CONTROL LEVER
TRAILER TILT
WINCH HYDRAULIC
m139521 op
Figure 3-4 Hydraulic Controls

3-5.6 Check tire inflation, adjust as needed to
the pressure listed on the semitrailer VIN
plate, located on the front of the semitrailer.
3-5.7 Check tractor/semitrailer rig for air leaks.
If air leakage is found, repair the defect be-
fore transporting.
3-5.8 Check the oil in each hub for proper
level and freedom from contamination. If
hubs are contaminated with water, dirt or
some other foreign material, clean before
transporting.
3-5.9 Check tractor air pressure. Pressure
must not fall below 90 psi, even after activat-
ing brakes a couple of times. Set parking
brake and carefully remove all wheel chocks.
Set emergency brake and try pulling forward.
The semitrailer wheels must not rotate. If
semitrailer brakes do not apply, DO NOT
transport until defect, or defects, are re-
paired.
3-6 TOWING THE SEMITRAILER
CAUTION
WHEN OPERATING SEMITRAILER, DO
NOT BACK OVER CURB. THIS WILL
CAUSE SEVERE DAMAGE TO UNDER-
CARRIAGE AND UNDERCARRIAGE
CYLINDER.
Driving the towing vehicle with the semitrailer
coupled behind requires constant attention to the
overall length of the combination. The “hinged-in-
the-middle” configuration of the tractor and semi-
trailer, load, and weight effect performance. Turn-
ing, passing, acceleration, braking, stopping, and
backup require special considerations. When exe-
cuting steep grades or turning tight curves, the
semitrailer must not be allowed to push the towing
vehicle, or jack knifing the semitrailer with the tow-
ing vehicle may result. Application of the semitrailer
brakes to keep the semitrailer in tow will help pre-
vent this pushing. Braking should begin before de-
scending a hill or attempting a curve, to assure
control.
3-6.1 Make a moving test of the semitrailer
brakes at low, and medium speeds before
traveling at highway speed.
a. The Anti-Lock Brake System (ABS) warning
lamp mounted at left rear side of the semi-
trailer should come on when power is sup-
plied to the ABS by turning the tractor
keyswitch on. The warning lamp should go off
once the semitrailer exceeds 4 mph. If the
warning lamp does not go off, a fault exists in
the semitrailer ABS. Once the vehicle speed
exceeds 4 mph, the light should remain off
unless a fault occurs or the keyswitch is
turned off, then on again.
CAUTION
IF A FAULT EXISTS IN THE SEMI-
TRAILER ABS, NORMAL BRAKING
WILL OCCUR, BUT WHEELS MAY
LOCK. SERVICE THE ABS AS SOON
AS POSSIBLE.
3-7

3-6.2 Monitor the air pressure gauge on the
dash of the towing vehicle. Pressure should
not fall below 90 psi at any time.
3-6.3 The semitrailer wheels track to the in-
side of the towing vehicle during turns. Thus,
turning corners requires a wide swing to pre-
vent “curb hopping”, and to allow the semi-
trailer wheels to clear any obstacle on the in-
side of the corner.
3-6.4 To stop, use a gradual and smooth ap-
plication of brakes. If grabbing occurs, apply
less pressure - grabbing brakes are not effi-
cient.
WARNING
ALWAYS CHECK BEHIND AND UNDER
THE TRUCK AND SEMITRAILER FOR
PERSONS OR OBJECTS BEFORE
MOVING. FAILURE TO CHECK CAN
LEAD TO SERIOUS PERSONAL IN-
JURY OR DEATH TO OTHERS, OR
DAMAGE TO PROPERTY.
3-6.5 Backing should be done with care. Tail
overhang, semitrailer length, and allowable
space must be taken into consideration when
backing the semitrailer.
3-7 PARKING THE TRAILER
3-7.1 Position truck/semitrailer rig on a level,
solid surface.
3-7.2 Set the PARKING BRAKE,not the
semitrailer hand brake, and check for proper
brake holding.
3-7.3 Chock wheels of semitrailer.
3-7.4 Check for any air leaks in lines, relay
valve, brake pods, or any other air system
component.
WARNING
WHEN LEAVING THE SEMITRAILER
UNATTENDED, POSITION ALL HY-
DRAULIC CONTROLS TO THE NEU-
TRAL OR “OFF” POSITION AND SHUT
OFF THE HYDRAULIC ENGINE POWER
SUPPLY, OR DISCONNECT THE TRAC-
TOR HYDRAULIC HOOK-UP.
3-8