Toro ProLine H800 Service Manual page 236

Testing the PTO Electric Clutch (continued)
Electrical System: Testing the Electrical Components
g294909
1. PTO electric clutch
2. Access slot
3. Unplug the clutch electrical connector from the machine wire harness.
Note: For accurate clutch resistance measuring, the clutch should be at
approximately 21°C (70°F).
Note: Before taking small resistance readings with a digital multimeter, short
the multimeter test leads together. The meter displays a small resistance
value (usually 0.5 ohms or less). This resistance is because of the internal
resistance of the multimeter and test leads. Subtract this value from the
measured value of the component that you are testing.
4. Use a multimeter (ohms setting), check the clutch coil resistance between
the 2 terminals of the clutch electrical connector. The coil resistance should
be approximately 3.0 ohms. Additionally, check that there is no continuity
between either of the clutch wire connector terminals and the clutch frame.
5. Using the access slots in the clutch cover, measure the gap between the
clutch rotor and the armature
(0.016 to 0.024 in) at all the 3 access slots. If gap is incorrect, loosen or
tighten the 3 locknuts evenly to achieve correct uniform gap.
6. As an additional test, apply 12 volts to the terminals of the PTO electric
clutch. The clutch should engage. If the clutch does not engage when
voltage is applied, replace the PTO electric clutch.
7. If the clutch removal is necessary; refer to
8. After you complete the PTO electric clutch testing, connect the clutch
electrical connector to the machine wire harness.
Figure 132
3. Lock nut
(Figure 132). The gap should be 0.4 to 0.6 mm
Electric Clutch (page
Page 6–36
8–15).
ProLine H800
19241SL Rev A