Copyright 12/14 69 S/N XXXX WO#XXXXXX
Smoracy, LLC
MODEL 3680 TROUBLE SHOOTING
TROUBLE SHOOTING GUIDE
PROBLEM - INFEED CONVEYOR CHAIN NOT OPERATING USING THE MANUAL CONTROLS:
(All other hydraulic systems are working)
Possible Cause Possible Solutions
Infeed Conveyor chain lock blocks engaged. Lower lock blocks.
Material wedged or stuck preventing the With the machine shut down, check around Infeed
Infeed Conveyor chain from turning. Conveyor looking for anything that may have the
Infeed Conveyor chain bound up. In cold climates the
Infeed Conveyor chain could be frozen to the bed.
Broken drive or idler sprocket assemblies. Check both drive and idler sprockets to make sure
they are all right as well as the bearings that support
them.
Check roller chain on drive motor to make Repair or replace roller chain.
sure it’s still in places.
Check to see if the drive key in the infeed Check shafts for damage and replace key.
drive sprocket or infeed hydraulic motor
shaft has sheared.
Check the flow controls to see if they are open. If the flow controls are opened up too far the Infeed
Conveyor chain can stop under heavy load.
Low hydraulic system pressure. A quick check of the hydraulic pressure can be done
by placing the pressure gauge into the diagnostic port
provided on the control valve. Put the Infeed
Conveyor manual control valve into forward or reverse
position to check the Infeed Conveyor working
hydraulic pressure. A 1200 PSI (83 bar) reading would
indicate that the Infeed Conveyor is mechanically stalled by some
obstructing material. A very low pressure reading
would indicate a hydraulic problem with the pressure
relief valve or the hydraulic pump. See “Procedure for
checking hydraulic pump and relief valve setting” in
the Hydraulic Section.
No hydraulic system pressure. Trace the pressure line from the valve bank back to
the manifold used for the Hydraulic Shut Down
system. Identify the electric solenoid for this circuit
and verify that you have a 24 volt reading (12 volt on
some models) with the ignition switch on. These
solenoid valves need to be energized or the oil is
pumped back to tank. If you have the proper voltage,
try swapping this solenoid with another to determine if
it is bad. If the problem moves to the circuit you
swapped with then the solenoid is at fault. If the
problem stays with the circuit you are working on then
the pump is your problem.
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