Pto Clutch Coil Tests - Toro Z MASTER 2000 Series Service Manual

Main PTO Switch Testing

PTO Clutch Coil Tests

Clutch Coil Resistance Measurement Test
Clutch Coil Continuity to Ground Test
2000 Series Z MASTER®Service Manual
3460-328 Rev A
g427669
Using a digital multimeter set to the OHM or Continuity setting, verify the
following:
1. Switch open (PTO not engaged)
• Pin 2 and 4 should NOT have continuity
• Pin 2 and 1 should have continuity
• Pin 6 and 8 should NOT have continuity
• Pin 6 and 5 should have continuity
2. Switch closed (PTO engaged)
• Pin 2 and 4 should have continuity
• Pin 2 and 1 should NOT have continuity
• Pin 6 and 8 should have continuity
• Pin 6 and 5 should NOT have continuity
If the PTO clutch is not engaging or is suspected 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 an electrical problem
or is the cause of one.
1. Park the machine on a level surface and disengage the PTO. Stop the
engine, wait for all moving parts to stop, then remove the key. Engage the
parking brake.
2. Disconnect the clutch wire connector.
3. Set the multimeter to measure resistance (OHMs setting).
4. Connect the meter lead wires to the terminals in the clutch connector.
• The clutch resistance spec should be 1.84 Ohms +/- 5%.
•
1. Park the machine on a level surface and disengage the PTO. Stop the
engine, wait for all moving parts to stop, then remove the key. Engage the
parking brake.
2. Disconnect the clutch wire connector.
3. Set the multimeter to measure resistance (OHMs setting).
Figure 140
Page 8–15 Electrical: Service and Repairs