SERVICE
Clutch Air Gap Inspection and Adjustment The electric clutch is activated by the PTO switch to engage or disengage power to belt driven attach- ments. The clutch also provides braking action to stop the attachment when the PTO is disengaged or the operator presence circuit is interrupted. For proper operation, the air gap between the arma- ture and the rotor must be set at .5 mm (.020 inch). If the air gap is too narrow, the clutch armature may drag when disengaged, causing premature failure. If the air gap is too wide, the clutch may not engage correctly or it may disengage when it becomes hot. Check the air gap annually and adjust the clutch air gap as needed. 1. Locate the three inspection windows (A) on the clutch.
and the front grill and remove from the clutch pulley. 9. Push the new belt down between the PTO tension rocker and the front grill. 10. Install the belt onto the clutch pulley. 11. Lift up on the PTO idler pulley and install the belt into the rear groove of the idler pulley. 12. Reinstall the PTO belt tensioner rod to the belt tension rocker and fasten with the washer and hairpin. 13. Reinstall the PTO idler pulley guard. Torque the bolts to 11 Nm (100 in-lbs). 14. Reinstall the front grill plate.
A
2. Insert a .5 mm (.020 inch) feeler gauge through the inspection window and into the slot between the armature and the rotor. 3. Tighten or loosen the clutch adjustment nut (B) as needed to achieve the .5 mm (.020 inch) air gap.
B
B
B
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