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16
Warner Electric • 800-825-9050
P-1177-WE • 819-0457
Electrical Evaluation
Step 1.
How to Measure Clutch Coil resistance
(See Figure 5)
1. Turn engine and PTO switch off.
2. Disconnect clutch at clutch connector.
3. Select meter setting for ohm reading.
4. Connect meter leads to clutch.
5. Check meter reading and refer to the chart
below for correct clutch resistance reading.
(values are @ 68°F.)
If reading falls in acceptable range proceed
to step 2, if not replace the clutch.
Figure 5
Resistance Measurement
Table 1
Note:
If bench tested with 12 volts applied,
armature may not pull away from
brakepoles. Rotational motion is
required to engage clutch.
Meter
Step 2.
Measure the supply voltage at the clutch
(See Figure 6)
1. Turn engine off.
2. Connect meter leads at the clutch connector.
3. Select meter setting for voltage reading.
4. Make sure wires will not become entangled
in rotating components of clutch.
5. Start engine and engage PTO switch.
6. Measure voltage across the leads at
the connectors.
7. Voltage should be 12-14 volts DC. If clutch
still fails to operate, replace clutch.
8. If voltage is not within 12-14 volt range
consult EOM’s service manual.
Model
Torque Rating
Resistance
at 68-70° F
(ft-lb.) Nom. NM Nom.
(ohms)
MS - 60
60 ft-lb.
81 NM
6.59 - 7.28
MS - 80 AL
80 ft-lb.
108 NM
2.86 - 3.17
MS - 80 CU
80 ft-lb.
108 NM
3.36 - 3.71
TG - 105
105ft-lb.
142 NM
2.89 - 3.20
TG - 125
125 ft-lb.
169 NM
2.65 - 2.92
CMS - 175
175 ft-lb.
237 NM
2.34 - 2.59
CMS - 200
200 ft-lb.
271 NM
1.74 - 1.93
CMS - 225
225 ft-lb.
305 NM
1.66 - 1.83
CMS - 250
250 ft-lb.
339 NM
1.71 - 1.89
Figure 6
Voltage Measurement
Meter