PT Series Operator & Parts Manual - McConnel

TROUBLESHOOTING GUIDEThe charts below are intended to help in diagnosing and rectifying any problems withyour machine. If the problem persists, please consult your supplier or contact yourlocal dealer for advice.Troubleshooting Chart - PT180 MachinesFault Possible Cause RemedyShear bolt failure on start up Tractor revs too high Reduce revs to idle before engaging PTOShear bolt failure on start up Incorrect shear bolt Check the shear bolt is the correct grade andsizeShear-bolt failure in operation Obstacle encountered Inspect ground for stones, stumps, etc. beforereplacing with the correct grade of boltExcessive vibration Broken or missing blade Check blades and replace with new if necessaryUneven stubble Travelling too fast Reduce forward speedRagged stubble Blunt blades Replace bladesScalping ground Skids set too low Reset skid heightExcessive ground markingTopper not following groundcontours correctlyCheck transport strap and adjust top link ifnecessaryUncut material Heavy crop Reduce forward speed, or cut twiceTroubleshooting Chart - PT240 & PT270 MachinesFault Possible Cause RemedyShear bolt failure on start up Tractor revs too high Reduce revs to idle before engaging PTOShear bolt failure on start up Incorrect shear bolt Check the shear bolt is the correct grade andsizeShear-bolt failure in operation Obstacle encountered Inspect ground for stones, stumps, etc. beforereplacing with the correct grade of boltExcessive vibration Broken or missing blade Check blades and replace with new if necessaryExcessive vibrationCracked or damagedflexible couplingCheck couplings and replace with new ifnecessaryClashing blades Incorrect blade timing Check the blade timing is 90° out of phase andcorrect if necessaryUneven stubble Travelling too fast Reduce forward speedRagged stubble Blunt blades Replace bladesScalping ground Skids set too low Reset skid heightExcessive ground markingTopper not following groundcontours correctlyCheck transport strap and adjust top link ifnecessaryUncut material Heavy crop Reduce forward speed, or cut twice43