Operator Training -- Landoll 345 Series Trailers

Uploaded by kansastransportation on 18.07.2011

The purpose of this program is to provide basic instruction in the proper and safe operation
of Landoll’s 345 Series trailers. To obtain a complete understanding of operational and
safety issues all drivers, operators, and maintenance personnel are required to thoroughly
read the operators manual.
Landoll 345 Series trailers require a hydraulic power source to activate the traveling axle
undercarriage and tilt bed functions. Hydraulic specifications are:
2500 PSI maximum operation pressure. 17 GPM (gallons per minute) operating follow.
30 gallon oil tank capacity. ½ inch hydraulic lines are required
A wet kit pressure relief valve is required. The trailers pressure and return lines are
located at the front of the hitch.
Operation of the trailer in a manner other than as specified by this program and the
operators’ manual could result in costly damage to the trailer, personal injury or
Drivers are strongly encouraged to follow all industry recommended procedures and safety
practices during all phases of truck and trailer operation.
Before hookup, it is important to do a complete walk-around inspection of the trailer. Look
for oil leaks and hanging wires or hoses. Check the tires for proper inflation and excessive
wear. Check the oil in the hubs and look for structural damage to the trailer and hitch.
Before coupling, make sure the trailer is sitting on a solid level surface. Model 345
trailers are equipped with an adjustable pintle hitch and the trailer’s pintle eye should
be at the same level or slightly higher than the trucks hitch. Set the trailers pintle
eye to the correct height before coupling.
When coupling, stop the truck just short of the trailer hitch, set the truck brakes and
connect the hydraulic, air and electrical lines.
If the trailer is equipped with an onboard hydraulic engine package, start and warm up
the engine as detailed in the operators’ manual.
Now, using the wireless remote or the hydraulic tilt lever, raise or lower the pintle eye
to the proper height for coupling. Then slowly back the truck until contact is made and the
hitch is centered for proper connection.
Set the truck brakes and lower the pintle eye onto the trucks hitch by hydraulically
raising the trailer bed. Then lock the hitch in place.
When the truck and trailer are properly coupled, raise the parking stands. If the stands are
still weight bearing, hydraulically raise the trailer bed until the stands are off the
Pull the pins and slide the stands up to the stowed position and reinsert the keeper pins.
Now fully lower the tilt bed and attach the safety chains from the trailer to the truck.
After coupling check the following: Hydraulic and air hose connections,
Air and ABS brake systems for proper operation. Check the running and signal lights along
with the rear impact guard. Make sure the trailers undercarriage is fully back in transport
position. Inspect the winch and cable system to ensure safe operation and make sure the
landing gear are raised and secured in transport position.
Operators will need to verify that the necessary straps, chains, and boomers to secure the
load are on the truck or in the trailers toolbox.
Safety is your first concern during all phases of trailer operation. Do not load any payload
that will over-load any component of the trailer or result in an unsafe condition.
It is important that the truck and trailer are parked in a straight line on a solid,
level surface with the trucks parking brake set and the trailer brakes released.
Use the remote control or the axle control lever and trailer tilt lever to put an empty
trailer in load position.
Alternate between moving the undercarriage forward and tilting the bed up until the undercarriage
is fully forward and the trailers approach plate is firmly on the ground.
Now slowly drive the load onto the trailer. Make sure the load is steering straight and
does not run off the side of the trailer. Position the load center of gravity just ahead
of the rear axles, if possible.
Do not put more weight on the pintle hitch than on the trailers axles when loading.
If the load was driven on, make sure the vehicle is in low gear and the parking brake is set
before leaving the cab.
Now activate the winch control and attach the winch to load. Pull the cable snug and
continue to securely tie down the load. Check all chains and boomers to insure everything
is secure.
Once the load is secured place the trailer in transport position. During this process
it is critical that you control the trailers center of gravity.
If the load center of gravity in not situated in front of the trailers rear axle, alternate
between tilting the bed up and moving the undercarriage to the rear until the load center
of gravity is in front of the rear axle.
Keep part of the weight on the axles and part on the approach plate and never move the axles
so far to the rear that the approach plate comes off the ground.
When the center of gravity of trailer and load is in front of the rear axle, alternate
between lowering the trailer bed and moving the undercarriage to the rear if the trailer.
The trailer deck will lower as the undercarriage moves into the roller pockets.
Make sure the undercarriage is all the way to the rear of the trailer and the trailer
deck is completely lowered before taking the trailer on the road.
Do not run the truck engine above 1000 rpm when loading or unloading. Higher rpm’s
can cause the hydraulic oil to overheat and could damage the truck and trailers hydraulic
To unload, park the truck and trailer on a solid level surface, set the trucks parking
brake and release the trailer brakes.
Using the axle control lever, move the axles forward until they are just behind the load
center of gravity.
Then, raise the trailer bed until the approach plate makes contact with the ground.
Now alternate between moving the axles forward and lowering the trailer bed. Keep the approach
plate in constant contact with the ground during this process.
Never move the axles forward past the load center of gravity unless the approach plate
is on the ground. If the axles move forward of the load center of gravity the weight of
the load becomes concentrated behind the axles. Without support from the approach plate the
front of the trailer will want to rise up, potentially pulling the trucks rear axles
off the ground. This could result in severe equipment damage and poses a serious risk
of personal injury or death.
Always unload powered vehicles at the lowest load angle. Low load angle is achieved when
the undercarriage is forward as far as it will go and the approach plate is on the ground.
If the load was driven on, remove all securing devices first. Then give the winch cable some
slack and unhook the winch cable from the load. Carefully back the vehicle off and clear
of the trailer.
All non-powered loads will be winched on and then winched off the trailer.
To unload a non-powered load, remove all securing devices and use the winch to let the load
roll down as far as it will go.
A non-powered load may not roll completely off or clear of the trailer.
Should that happen, block the wheels that are on the ground and unhook the winch cable.
Now pull the trailer forward until the load is off and clear of trailer.
To return the trailer to transport position, alternate between lowering the trailer bed
and moving the undercarriage to the rear of the trailer. Make sure the bed is fully lowered
and the axles are as far back as they will go.
Some trailers may be equipped with an optional air dump valve. If you dumped air from the
trailer suspension to facilitate unloading, turn the dump valve “OFF” and air up the
suspension before operating the trailer on streets or highways.
When parking a trailer, make sure the undercarriage is not forward of transport position.
To provide Department of Transportation approved under-ride protection, the undercarriage needs
to be back as far as it will go with the under-carriage rollers fully seated in the roller pockets.
Drivers, you are responsible for your safety and the safety of others when operating the
trailer. As you go about your job, be aware of potential problems and do your best to
avoid them. Always, think safety!