Toro TITAN Service Manual page 106

Electric PTO Clutch Testing
Electric PTO Clutch Coil Resistance Measurement
Electric PTO Clutch Continuity to Ground Check
Electrical: Service and Repairs
pressed against the brake material opposite the clutch plate. When power is
applied, the friction plate is pulled toward the clutch plate and the two rotate as
one. When the clutch plate and the friction plate rotate as different speeds it
is known as clutch slipping.
If the PTO clutch is not engaging or is suspect as a cause of electrical problems,
use the following electrical troubleshooting steps. These procedures will help
determine if the clutch has failed as a result of or is the cause of an electrical
problem.
1. Park the machine on a level surface and disengage the PTO. Stop the
engine, wait for all moving parts to stop and remove the key. Engage the
parking brake.
2. Disconnect the clutch wire connector.
3. Set the multi-meter to measure resistance (OHMs setting).
4. Connect the meter lead wires to the terminals in the clutch connector.
g331210
5. See the PTO Clutch Electrical Specifications chart.
Resistance (OHMs)
3.05 ± 5%
1. Park the machine on a level surface and disengage the PTO. Stop the
engine, wait for all moving parts to stop and remove the key. Engage the
parking brake
2. Disconnect the clutch wire connector.
3. Set the multi-meter to measure resistance (OHM setting).
4. Connect one multi-meter lead to the clutch housing. Connect the other
multi-meter lead to each of the clutch connector terminals.
5. The 2 clutch connector terminals should never have continuity to ground
and should OPEN at all times.
6. If continuity is found between the PTO connector and ground, the PTO clutch
and the PTO switch must be replaced.
Figure 94
AMP Draw
3.93
Page 8–10
Continuity to Ground
OPEN
Titan Service Manual
3438-774 Rev A