3-1
Chapter 3
Operating Instructions
General
This section supplies information for operation of the
trailer. It describes and locates controls and gives general
operation procedures. Read all instructions, warnings,
cautions and danger notes before attempting to operate
the trailer. Operators must have proper training before
operating the trailer.
A hydraulic pump must be coupled to the trailer hydraulic
system, or the optional hydraulic engine package started,
before using hydraulic controls.
WARNING
WARNING
Air Brake System
The air brake system of the trailer is operated from the
towing vehicle after coupling. The towing vehicle’s air
system must be coupled to the trailer and charged to 90
psi minimum before the brakes can adequately function.
Anti-Lock Brake System (ABS)
The Anti-Lock Brake System of the trailer 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 also not
be used to power any additional auxiliary devices while
the semitrailer 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
CAUTION
Landing Gear
The landing gear consist of two legs with a tube
telescoping within another tube. Pin drop is standard.
Crank style or hydraulically operated are optional.
Parking Brake
The parking brakes are automatically applied by spring
pressure with the air actuators of the braking system
when air pressure in the emergency line drops below 50
psi. This may be done within the truck using the trailer
parking/emergency valve or by disconnecting the
emergency gland-hands.
Do not operate the trailer with any known fault
that might endanger the occupants, nearby
workers, other traffic, the load, or the equipment.
Do not operate the trailer until you have read the
operator’s manual and completely understand the
proper use and function of all controls. Improper
use can cause personal injury, damage to your
trailer and cargo, and cause time-consuming
breakdowns.
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
trailer is moving forward.
If a fault exists in the trailer ABS, normal braking
will occur, but wheels may lock. Service the ABS
as soon as possible.
Summary of Contents for 345F
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