Landoll 317D, Operator'S Manual

Page: 19 / 88

OPERATING INSTRUCTIONS
3-5
Connecting Tractor Services to
the Semitrailer
1. Connect the towing vehicle 7-pole electrical 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.
2. If you have not already done so, connect the tractor
hydraulic lines to the semitrailer unless your
semitrailer is equipped with the self-contained
hydraulic power engine package.

CAUTION
IMPORTANT
Some oil may need to be removed from the tractor
reservoir to allow room for 12 gallons of additional oil
displaced from the trailer hydraulic system.
3. Air Lines: See “Pre-Coupling of Semitrailer and
Tractor” on page 3-3 .
Tractor and Semitrailer
Check-Out

WARNING
1. With hydraulic power operating, raise landing gear:
a. For pin drop landing gear, activate the TRAILER
TILT lever “UP” until weight is off the landing gear
(See Figure 3-4.) Raise landing gear. (See
“Trailer Tilt Lever” on page 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
b. For crank landing gear, retract landing gear by
turning hand crank on control panel
counterclockwise. 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 Step 2) on engine control panel (See
Figure 3-4.) Secure each leg with a pin in fully
retracted position.
2. The LANDING GEAR lever is located on the left side
of the Engine Control Panel. It has three positions:
Operating pressures greater than 2500 psi can
cause damage to the trailer.
Failure to properly set and check parking brake,
and chock wheels when parking and during
storage, could allow movement of the
truck/semitrailer rig resulting in serious personal
injury, death, or damage to property in its path.
Always grip crank handle securely with both
hands. Never shift landing gear under load, leave
the gears in neutral or leave the crank unsecured.
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.