10
OPERA
TION
Operation Instructions
General Description of Operation
Etnyre Live Bottom trailers are designed to carry
and unload the maximum rated volume of payload at
a controlled rate.
Horizontal rear unloading is accomplished by a hy-
draulically powered conveyor belt.
Power to drive the hydraulic pump is supplied from
the tractor engine through the Power Take-Off (PTO)
system. Quick disconnect hydraulic hose couplers
located near the tractor cab are used to deliver pump
flow to the motor and gear reduction unit located on the
trailer. The hoses may be disconnected without loss of
oil or air entering the hydraulic circuit.
Tractor engine rpm and hydraulic pump speed is pri-
marily used to control the rate of material discharge. If
the rate of material discharger is too fast at engine idle
speed, an adjustable flow control valve can be used to
divert partial pump flow to the conveyor motor back to
tank. If equipped, the flow control valve will be located
at the left rear corner of the trailer.
Pump Performance Recommendations
Efficient operation of the live bottom trailer will be
dependent on the tractor mounted hydraulic pump per-
formance. The pump must meet the following minimum
performance criteria.
Pump Speed: 1200 rpm
Average Output Flow at 3000 psi: 30 gpm (114 lpm)
General
This section contains information required for the
operation of Etnyre Live Bottom Trailers.
WARNING
Read these instructions thoroughly and
observe them when operating Etnyre trailers.
Operate by Authorized, Trained personnel only!
The trailer must be maintained in good operating
condition. Minor damage can quickly result in a major
failure if not repaired.
WARNING
Do not operate a trailer needing repair
Do not undersize the prime mover. The prime
mover (tractor) must be compatible with the
trailer and have adequate capacity
Do not exceed either the GVWR or GAWR shown
on the certification label, These ratings are maximum
for the trailer. Exceeding these values may result in
damage and will shorten the life of the trailer.
Keep personnel clear when loading and unloading
trailers.
Trailer to Tractor Connecting Procedures
1. Inspect the fifth wheel area and the trailer frame
for wear, structural cracks, damaged or broken steel.
Figure 4. Measuring Kingpin
2. Check the kingpin for wear or damage. Replace it
if the diameter measures less than 1 7/8” at any point
(see
Figure 4
).
3. Check the bolts for tightness. Tighten if required.
Refer to figure 3 for correct torque values.
4. Connect the trailer to the fifth wheel.
5. Connect the glad hands and build up reservoir air
pressure.
6. Connect the plug into the electrical socket.
WARNING
Check to insure that the kingpin is locked into
the tractor fifth wheel.
