Landoll LT08 Series User manual

MODEL LT08, LT10, LT12, AND LT14 SERIES
TAG TRAILER
OPERATOR’S MANUAL
1900 NORTH STREET
MARYSVILLE, KANSAS 66508
[phone]
F-294-1107 11/07

MODEL LT08, LT10, LT12, AND LT14 SERIES
TAG TRAILER
OPERATOR’S MANUAL
PURCHASED FROM: DATE / /
ADDRESS:
PHONE NO.: SERIAL NO.:
i

ii

TABLE OF CONTENTS
SECTION DESCRIPTION PAGE NO.
1 INTRODUCTION
2 STANDARD SPECIFICATIONS
3 OPERATING INSTRUCTIONS
3-1 GENERAL ...........................................3-1
3-2 PRE-COUPLING OF TRAILER AND TRUCK..................3-2
3-3 COUPLING OF THE TOWING VEHICLE TO THE TRAILER.......3-2
3-4 TOWING VEHICLE AND TRAILER HOOK-UP AND CHECK-OUT ....3-3
3-5 TOWING THE TRAILER .................................3-4
3-6 PARKING THE TRAILER ................................3-4
3-7 UNCOUPLING TOWING VEHICLE FROM TRAILER ............3-5
3-8 LOADING THE TRAILER ................................3-5
3-9 UNLOADING THE TRAILER..............................3-6
3-10 COLD WEATHER OPERATION ...........................3-6
3-11 HOT WEATHER OPERATION ............................3-6
4 MAINTENANCE AND LUBRICATION
4-1 GENERAL ...........................................4-1
4-2 MAINTENANCE SCHEDULE .............................4-1
4-3 MAINTENANCE PROCEDURES ...........................4-2
4-4 FRAME AND DECKS...................................4-2
4-5 ELECTRICAL SYSTEM .................................4-3
4-6 BRAKE SYSTEM MAINTENANCE .........................4-3
4-7 HUB AND DRUM MAINTENANCE .........................4-3
4-8 WHEEL BEARING .....................................4-3
4-9 SUSPENSION MAINTENANCE............................4-3
4-10 TIRES ..............................................4-4
4-11 WHEELS ............................................4-4
4-12 HYDRAULIC CUSHION CYLINDER ........................4-6
4-13 HYDRAULIC SYSTEM W/ FLOW CONTROL VALVE
FILLING METHOD .....................................4-6
5 TROUBLESHOOTING
iii

iv
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 problems be-
tween 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]

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.
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vi
IMPORTANT -
HYDRAULIC SURGE BRAKE
INFORMATION
TRAILERS EQUIPPED WITH HYDRAULIC
SURGE BRAKES ARE ALLOWED WHEN
THE TRAILER IS NOT SUBJECT TO THE
FEDERAL MOTOR CARRIER SAFETY
REGULATIONS (FMCSRs) OR EX-
CLUDED BY STATE REGULATION.

1INTRODUCTION
This manual provides operating, servicing, and maintenance instructions, for Model LT08, LT10, LT12,
and LT14 Series Tag Trailers, 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 EQUIPMENT CAN VOID YOUR WARRANTY.
COMMENTS Address comments or questions regarding this publication to:
LANDOLL CORPORATION
1900 NORTH STREET
MARYSVILLE, KANSAS 66508
ATTENTION: PUBLISHING -DEPT. 55
1-1

2STANDARD SPECIFICATIONS
CAPACITY (FRAME DESIGN):
LT0816............................................................7,000 LBS.
LT1016, LT1016-4, LT1020 ........................................... 10,000 LBS.
LT1216-4, LT1220...................................................12,000 LBS.
LT1420 ...........................................................14,000 LBS.
OVERALL WIDTH: ............................................................8’-6"
WEIGHT:
LT0816 ........................................................... 2,600 LBS.
LT1016 ........................................................... 3,150 LBS.
LT1016-4, LT1020 ...................................................3,500 LBS.
LT1216-4, LT1220 ...................................................3,700 LBS.
LT1420 W/ PINTLE HITCH .............................................4,350 LBS.
LT1420 W/ GOOSENECK HITCH ........................................5,520 LBS.
HITCH: .................................STD-2-5/16" BALL HITCH OR 3" I.D. PINTLE EYE
........................................OPTION - GOOSENECK W/ 2-5/16" BALL HITCH
DECK LENGTH:
LT0816, LT1016 .................................................16’FLAT DECK
LT1016-4 ........................................16’TILT DECK + 4’ STATIONARY
LT1020.........................................................20’TILT DECK
LT1216-4 ........................................16’TILT DECK + 4’ STATIONARY
LT1220.........................................................20’TILT DECK
LT1420.........................................................20’TILT DECK
LOAD ANGLE:
LT0816, LT1016 .........................................................12.4o
LT1016-4, LT1020, LT1216-4, LT1220 .........................................11.4o
LT1420 ................................................................12.1o
SPECIFIC BOLT TORQUES:
12" X 2" ELECTRIC BRAKE MOUNTING NUT ..............................30-35FT.LBS.
12-1/4” X 3-3/8” ELECTRIC BRAKE MOUNTING NUT.........................75-85FT.LBS.
1/2” DIAMETER WHEEL NUTS .........................................90-120FT.LBS.
5/8” DIAMETER WHEEL NUTS ........................................275-325FT.LBS.
NOTE: FOR GENERAL TORQUE SPECIFICATIONS, REFER TO TABLE 2-1.
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
5SAE Grade 8UNF Size SAE Grade
2
SAE Grade
5SAE 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. 10/97)
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 LUBRI-
CATION (AS RECEIVED CONDITION). THEY DO NOT APPLY IF SPECIAL GRAPHITE MOLY-DISULFIDE OR OTHER EXTREME PRESSURE LUBRI-
CANTS 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
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
LANDOLL CORPORATION
HYDRAULIC FITTING TORQUE SPECIFICATIONS
37oJIC, ORS & ORB (REV. 10/97)
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 LUBRI-
CATION (AS RECEIVED CONDITION). THEY DO NOT APPLY IF SPECIAL GRAPHITE MOLY-DISULFIDE OR OTHER EXTREME PRESSURE LUBRI-
CANTS ARE USED.
BRASS FITTINGS AND ADAPTERS - 65% OF THE TORQUE VALUE FOR STEEL.
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 — —
Table 2-2 Hydraulic Fitting Torque Specifications

3OPERATING INSTRUCTIONS
3-1 GENERAL
This section supplies information for operation of
the trailer. It describes and locates controls, and
gives general operation procedures. Read all in-
structions, warnings, cautions, and danger notes
before attempting to operate the trailer. Operators
must have proper training before operating the
trailer.
IMPORTANT
THE TRAILER IS WIRED ACCORDING TO FIG-
URE 3-1. BE SURE THE TRUCK ELECTRICAL
MATCHES TO ELIMINATE ANY POTENTIAL
ELECTRICAL PROBLEMS.
WARNING
DO NOT OPERATE THE TRAILER WITH
ANY KNOWN FAULT THAT MIGHT EN-
DANGER THE OCCUPANTS, NEARBY
WORKERS, OTHER TRAFFIC, THE
LOAD, OR THE EQUIPMENT.
3-1
Figure 3-1 Electrical Diagram

3-2 PRE-COUPLING OF TRAILER AND TRUCK
3-2.1 Slowly back the truck (towing vehicle)
up to the front end of the trailer so the hitch
of the trailer is centered with the truck. Stop
the towing vehicle just inches ahead of the
trailer. Set truck parking brake.
3-2.2 The hitch on the trailer can be adjusted
to different heights. Make sure the hitch
height is at the correct height so the trailer
deck is about parallel to the ground when
loaded.
3-2.3 If the trailer hitch needs some adjust-
ment to connect to the truck, manually raise
or lower the front of trailer by cranking the
landing gear (parking stands) up or down un-
til the proper height has been obtained.
3-2.4 Connect electrical receptacle to the
truck.
3-2.5 Apply brakes and inspect brake action
on all wheels for prompt application.
3-3 COUPLING OF THE TOWING VEHICLE TO THE TRAILER
DANGER
KEEP ALL PERSONNEL CLEAR OF
FRONT, REAR, AND SIDES OF TOW-
ING VEHICLE AND TRAILER DURING
COUPLING, COMPONENT OPERA-
TIONS, AND UNCOUPLING. FAILURE
TO STAY CLEAR CAN RESULT IN SE-
RIOUS PERSONAL INJURY OR DEATH.
3-3.1 Verify the trailer wheels are chocked
and brakes function properly.
3-3.2 Make sure the towing vehicle’s coupler
is open.
CAUTION
PUSHING THE TRAILER BACKWARDS
CAN DAMAGE LANDING GEAR.
3-3.3 Slowly back the towing vehicle so the
hitch contacts the trailer hitch. Make sure the
hitch is centered and will properly connect
up. Set the vehicle brakes.
3-3.4 Raise the landing gear (parking stands)
and lock the hitch in place.
IMPORTANT
KEEP BRAKES ENGAGED FOR REMAINDER
OF HOOKUP, CHECK-OUT PROCEDURES, AND
FOR PARKING.
3-2

3-4 TOWING VEHICLE AND TRAILER HOOK-UP AND 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/TRAILER RESULTING IN SERI-
OUS PERSONAL INJURY, DEATH, OR
DAMAGE TO PROPERTY IN ITS PATH.
3-4.1 Connect the electrical receptacle on the
front of the trailer to the towing vehicle.
IMPORTANT
THE KEY ON THE PLUG AND THE KEYWAY IN
THE SOCKET MUST BE PROPERLY ALIGNED
BEFORE INSERTING THE PLUG INTO THE
TRAILER SOCKET.
3-4.2 Assure landing gear is raised up all the
way.
3-4.3 Attach safety chains from the trailer to
the towing vehicle.
3-4.4 For electric brake breakaway system,
attach brake breakaway cable to towing vehi-
cle. Allow slack in cable for turning. Make
sure breakaway battery is charged and
breakaway system is working properly.
WARNING
MAKE SURE ELECTRIC AND SURGE
BRAKE BREAKAWAY CABLE IS CON-
NECTED FOR PROTECTION WHILE
TRAVELING. FAILURE OF CABLE
CONNECTION WILL CONSTITUTE NO
EMERGENCY BRAKING SYSTEM IN
THE EVENT THAT THE TRAILER IS
SEPARATED FROM THE TOWING VE-
HICLE. THIS MAY RESULT IN SERIOUS
PERSONAL INJURY, DEATH, OR DAM-
AGE TO PROPERTY.
3-4.5 For trailers with surge brakes, connect
breakaway chain s-hook to towing vehicle.
Allow slack for turning, but avoid letting chain
drag on pavement. Provide as straight a con-
nection as possible.
3-4.6 For trailers with surge brakes, sway
control devices that restrict operation of the
actuator cannot be used. The actuator must
be free to telescope in response to braking
requirements.
3-4.7 Check your maintenance schedule and
be sure everything is up-to-date.
3-4.8 Set parking brake and carefully remove
all wheel chocks. If brakes are not properly
set, the truck/trailer may roll when removing
wheel chocks.
3-3

3-5 TOWING THE TRAILER
3-5.1 Driving the towing vehicle with the trailer
coupled behind requires constant attention to
the overall length of the combination. Turn-
ing, passing, acceleration, braking, stopping,
and back-up require special attention to the
“hinged-in-the-middle” configuration of the
trailer. When executing steep grades or turn-
ing tight curves, the trailer must not be al-
lowed to push the towing vehicle, or jackknif-
ing the trailer with the towing vehicle may re-
sult. Application of the trailer brakes to keep
the trailer in tow will help prevent this push-
ing. Braking should begin before descending a
hill or attempting a curve, to assure control.
3-5.2 Make a moving test of the trailer brakes
at low, and medium speeds before traveling
at highway speed.
3-5.3 The trailer wheels track to the inside of
the towing vehicle during turns. Thus, turning
corners requires a wide swing to prevent
“curb hopping”, and to allow the trailer
wheels to clear any obstacle on the inside of
the corner.
3-5.4 To stop, use a gradual and smooth ap-
plication of brakes. If grabbing occurs, apply
less pressure. Grabbing brakes are not effi-
cient.
3-5.5 During any extended stop period, use
wheel chocks to secure the vehicle from
moving.
DANGER
ALWAYS CHECK BEHIND AND UNDER
THE TRUCK AND TRAILER FOR PER-
SONS OR OBJECTS BEFORE MOVING.
FAILURE TO CHECK CAN LEAD TO SE-
RIOUS PERSONAL INJURY OR DEATH
TO OTHERS, OR DAMAGE TO PROP-
ERTY.
3-5.6 Backing should be done with care. Tail
overhang, trailer length, and allowable space
must be taken into consideration. For trailers
with surge brakes, backing up a steep incline
or backing up fast can cause the actuator to
apply the brakes. The brakes cannot be ex-
pected to hold the trailer without pressure on
the hitch to activate the actuator.
3-5.7 The load on the trailer should be posi-
tioned so a minimum of 8% of the total
weight is on all the LT series trailers. The
maximum of the total weight on the hitch for
the LT8 and LT10 series shall be 30%. The
maximum of the total weight on the hitch of
the LT12 and LT14 series shall be 25%.
3-6 PARKING THE TRAILER
3-6.1 Position truck/trailer on a level, solid
surface.
IMPORTANT
ELECTRIC BRAKE AND SURGE BRAKE TRAIL-
ERS DO NOT HAVE A PARKING BRAKE.
3-6.2 Chock wheels of trailer.
3-4

3-7 UNCOUPLING TOWING VEHICLE FROM TRAILER
3-7.1 Park the trailer according to instructions
in Section 3-6.
3-7.2 Lower the landing gear to the ground
using the manual crank on the trailer.
3-7.3 With electric brake trailers, disconnect
the brake breakaway cable. Disconnect the
electrical cable and store so end is not on
the ground.
3-7.4 With surge brake trailers, disconnect the
breakaway chain. Disconnect the electrical
cable and store so end is not on the ground.
3-7.5 Disconnect safety chains from the tow-
ing vehicle.
3-7.6 Verify that all service lines are discon-
nected and trailer wheels are chocked.
3-7.7 Unlock hitch and raise trailer hitch by
cranking landing gear down until the hitch is
in a position to be disconnected.
3-7.8 Pull towing vehicle away from the trailer.
3-8 LOADING THE TRAILER
3-8.1 Practice all standard industrial safety
standards. Do not load any payload that will
overload any component of the trailer or
cause an unsafe condition.
WARNING
DO NOT ATTEMPT TO LOAD OR UN-
LOAD TRAILER WITHOUT CHECKING
TO MAKE SURE NOTHING IS IN THE
WAY WHEN THE BED IS TILTED.
PROPERTY DAMAGE, PERSONAL IN-
JURY OR DEATH IS POSSIBLE IF IN
THE PATH OF THE TILTING BED.
3-8.2 Assure maintenance schedule is up-to-
date and trailer is ready to be pulled.
3-8.3 Park towing vehicle and trailer on rela-
tively level ground.
3-8.4 Unlock the over-center hold-down latch
located at the front of the bed. Swing the
latch u-bolt forward far enough that it will
clear the bed anchor.
3-8.5 Keeping feet from under trailer where
they can become pinched, step on the back
of the trailer until the back of trailer rests
firmly on the ground.
3-8.6 Slowly drive the load onto the trailer un-
til the center of gravity of the load is just
slightly in front of the pivot point of the bed
and stop until the bed slowly lowers down to
the transport position. After the bed has
completely lowered, then drive the load on
forward until the load center of gravity is cen-
tered from side to side and so between 8%
and 25% of the total weight of trailer plus
payload is on the hitch.
3-8.7 Some of the trailers have a load holding
valve on them. When the valve knob is
screwed shut, it will keep the trailer deck in
the tilted position once it is tilted. This feature
will allow the trailer to be loaded and stay
tilted even if the load center of gravity goes
past the pivot point. When the load center of
gravity is secured in front of the pivot point,
the load lolding valve knob can be slowly
opened to allow the bed to tilt slowly down
into road position.
IMPORTANT
THIS VALVE DOES NOT KEEP BED FROM TILT-
ING UP EVEN WHEN SHUT OFF.
3-8.8 Secure the load using approved stan-
dard tie-down methods.
3-8.9 Lock the bed down with the over-center
hold-down latch located at the front of the
bed.
3-5

3-9 UNLOADING THE TRAILER
3-9.1 Practice all standard industrial safety
standards.
WARNING
DO NOT ATTEMPT TO LOAD OR UN-
LOAD TRAILER WITHOUT CHECKING
TO MAKE SURE NOTHING IS IN THE
WAY WHEN THE BED IS TILTED.
PROPERTY DAMAGE, PERSONAL IN-
JURY OR DEATH IS POSSIBLE IF IN
THE PATH OF THE TILTING BED.
3-9.2 Park towing vehicle and trailer on rela-
tively level ground.
3-9.3 Set towing vehicle’s brakes.
3-9.4 Unlock the over-center hold-down latch
located at the front of the bed. Swing the
latch u-bolt forward far enough that it will
clear the bed anchor.
3-9.5 Making sure the payload will not roll in
any direction, remove the payload tie-downs.
Make sure nothing is in the path of the tilting
bed.
3-9.6 Slowly drive the load back until the cen-
ter of gravity is just slightly back of the pivot
point of the bed and stop until the bed slowly
lowers down to the ground. After the bed has
completely tilted down to the ground, drive
the load off the trailer far enough that the
bed will not hit it when tilted back down.
3-9.7 Lower the bed back down to the trans-
port position by walking up the bed far
enough that the bed tilts back down.
3-9.8 Lock the bed down with the over-center
hold-down latch located at the front of the
bed.
3-10 COLD WEATHER OPERATION
3-10.1 Cold weather causes lubricants to con-
geal, insulation and rubber parts to become
hard, which may lead to problems found in
bearings and electrical systems. Moisture at-
tracted by warm parts can condense, collect
and freeze to immobilize equipment. The
truck/trailer operator must always be alert for
indicators of cold weather malfunctions.
3-10.2 Check all structural fasteners, gaskets,
seals and bearings for looseness that can
develop due to contraction with cold. Do not
over-tighten.
3-10.3 Check tire inflation. Tire inflation de-
creases when the temperature decreases.
3-11 HOT WEATHER OPERATION
3-11.1 Hot weather operation can cause ex-
pansion of parts, resulting in tightening of
bearings, fasteners, and moving parts. Fail-
ure of gaskets or seals can occur.
3-11.2 The trailer should be parked in the
shade if possible. Long exposure to the sun
will shorten service life of rubber components
(i.e., tires, light and hose grommets, hoses,
etc.) and paint life.
3-11.3 Check tire pressure early in the day be-
fore beginning operations while the tire is
cool. Put all valve stem caps back on after
checking.
3-11.4 If the area is extremely humid, protect
electrical terminals with ignition insulation
spray. Coat paint and bare metal surfaces
with an appropriate protective sealer.
3-6