J&M 818 - Manual (Page 13)

ADJUSTING THE SLIP CLUTCH
After the fi rst hour of operation, the slip-disc clutch on the PTO should be checked for overheating. After the fi rst hour,
the slip-disc clutch should be checked weekly or anytime there is excessive slippage of the friction discs. The slip-disc
clutch should be checked for moisture, which could cause corrosion on the drive plates. If the grain cart has been idle for
an extended period of time, or in wet weather, check to make sure that the friction lining plates are not rusted or corroded
together. The friction lining plates are 1/8” (0,32cm) thick new. They should be replaced after 1/32” (0,08cm) of wear to
ensure proper operation.
IMPORTANT: If the machine has never been used or has not been operated for one (1) season, the following is
recommended.
When the grain cart has been idle for an extended period of time, it is important to check the slip-disc clutch to make sure
that it will slip when an obstacle or load heavier than the torque setting is encountered. Use the following procedure to
make certain that the slip-clutch will slip and give the overload protection required.
Loosen the nut on the springs until the springs can rotate, yet remain secure on the bolts. •
Place a mark on the outer plate of the slip-disc clutch. •
Securely attach the PTO and the grain cart to the tractor and start the tractor. •
Engage the PTO for several seconds then quickly disengage it. •
Turn the tractor off. •
The friction lining plates should have been broken loose or “slipped”. Check the marks placed on the outer plates of •
the slip-disc clutch. If the marks are aligned, the friction plates are not working properly.
Adjust the nuts on the springs to set the spring compression height to 1.27 inches (3,23cm).
•
ADJUSTING THE LOWER FLIGHTING AND HANGER BUSHING ASSEMBLY
WARNING
MAKE SURE THAT ALL POWER IS SHUT OFF BEFORE ADJUSTING THE FLIGHTING ASSEMBLY.
If the drive-dog and hanger assembly are becoming excessively hot during unloading, the lower fl ighting and/or hanger
may need adjusting. The hanger bushing assembly has elongated holes where it attaches to the outer tube assembly.
Loosen the two 3/8” bolts on the hanger bushing assembly. Adjust the hanger either up or down and vertically center it
between the fl ighting and drive dog. Retighten the bolts. Make certain that the fl ighting center and drive-dogs do not rub
the hanger bushing assembly, causing them to become hot.
If the hanger can no longer be adjusted by moving it up or down on the elongated holes, both the hanger bushing
assembly and the lower fl ighting will have to be removed. After removing them from the tube assembly, place a shim
[between 1/8” (0,32cm) to 3/16” (0,48cm) thick] where the gearbox and the spline coupler (welded to the lower fl ighting).
Replace the lower fl ighting and reattach the hanger to the tube assembly. Readjust the hanger assembly. NOTE: The
bottom of the lower fl ighting is not attached to the gearbox with any bolts or set screws but may be ‘frozen’ fast. Be
careful when removing the lower fl ighting from the gearbox. For easier removal of the lower fl ighting, keep the gearbox at
the bottom intact, remove the 2 3/8” bolts from the hanger bushing assembly and pull the lower fl ighting off of the gearbox.
After adjusting the lower fl ighting, move the upper auger to the unload position and check the upper fl ighting for
readjustment.
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