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G P - 5 0 G R A I N P R O C E S S O R
O P E R A T I N G I N S T R U C T I O N S
Section 3: General Maintenance
SERVICE AND MAINTENANCE
CAUTION:
If for any reason arc welding is to be done, always ground cylinder to frame of machine
to prevent arcing in bearings.
1. Before working on or near the GP-50 Grain Processor for any reason, including servicing, inspecting or
unclogging machine:
a. Run GP-50 Grain Processor until discharge conveyor is empty, and grind as much of the material
in the hopper as possible.
b. Reduce engine speed to idle.
c. Disengage PTO
d. Disengage hydraulics.
e. Place transmission in park and set parking brake.
f. Shut off tractor engine and remove key.
g. Wait for all movement to stop.
h. Disconnect PTO driveline from tractor.
2. When replacing any part on your GP-50 Grain Processor, be sure to use only DuraTech Industries
authorized parts.
3. Relieve all pressure in the hydraulic system before disconnecting the lines or performing other work
on the system. Make sure all connections are tight and the hoses and lines are in good condition before
applying pressure to the system.
WARNING:
Hydraulic fluid escaping under pressure can be invisible and have enough force to
penetrate the skin. When searching for a suspect leak, use a piece of wood or cardboard rather than
your hands. If injured, seek medical attention immediately to prevent serious infection or reaction.
4. Visually examine to see if any internal parts show excessive wear. Repair or replace needed parts. These
parts include rotor plates and holes in the plates that support the rods. Enlarged holes can cause rods to
break.
Also check rods, rod locking and retaining devices, hammers, screens, screen tracks and hold downs,
main shaft, hinges or anything else that could wear and perhaps fail if not properly maintained, and cause
damage to the rotor and/or personnel safety. Check bearing alignment and mounting bolts to insure a firm
foundation and reduced vibration.
Keep all foreign objects out of the hopper and away from the rotor. Foreign objects may result in personal
injury or cause severe damage to hammers, screens, rods, and other parts that will cause rotor failure.
