PTO clutch adjustment
WARNING
To avoid serious injury, perform adjustments only with engine stopped, key removed and tractor on level ground.
Check the PTO clutch adjustment after every 250 hours of operation. Also perform the following procedure if the clutch is slipping or will not engage, or if a new clutch has been installed.
1.Remove key from ignition switch and disconnect spark plug wires to prevent the possibility of accidental starting while the PTO is being adjusted.
2.See Figure 34. Note the position of the 3 adjustment windows (A) in the side of the brake plate and the nylock adjustment nuts (B).
3.Insert
4.Alternately tighten the adjustment nuts (B, Figure 34) until the rotor face and armature face just contacts the gauge.
5.Check the windows for an equal amount of tension when the gauge is inserted and removed, and make any necessary adjustments by tightening or loosening the adjustment nuts.
NOTE: The actual air gap between the rotor and armature may vary even after performing the adjustment procedure. This is due to dimensional variations on component parts, and is an acceptable condition.
6.Check the mower blade stopping time. The mower blades and mower drive belt should come to a complete stop within five seconds after the electric PTO switch is turned off.
7.Perform the BLADE BRAKE CHECK found in the MAINTENANCE Section. Mower blades and mower drive belt should come to a complete stop within five seconds after electric PTO switch is turned off.
Troubleshooting, Adjustment, & Service
A |
B |
B |
B |
Figure 34. PTO Clutch Adjustment
A.Adjustment Window (Qty. 3, one shown)
B.Adjustment Nut
| C |
B | A |
|
Figure 35. Adjust PTO Clutch
A.Window
B.Adjustment Nut
C.Feeler Gauge
31
