Toro Workman 3000 Series, Service Manual

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Rev. C Workman 3000/4000 Series Page 8 -- 11 Electrical System
Glow Relay (Briggs/Daihatsu Diesel Engine)
On Workman vehicles with a diesel engine, the glow
relay is attached to the the hydraulic oil filter bracket.
Two styles of glow relays have been used on the Work-
man. On machines with serial numbers below
260000000, two of the four relay connections are se-
cured with screws (Fig. 11). On machines with serial
numbers above 260000000, the glow relay is attached
to the wire harness with a four wire connector (Fig. 12).
1. Verify coil resistance between terminals 86 and 85
with a multimeter (ohms setting).
A. On machines with serial numbers below
260000000, resistance should be from 41 to 51
ohms.
B. On machines with serial numbers above
260000000, resistance should be approximately 72
ohms.
2. Connect multimeter (ohms setting) leads to relay ter-
minals 30 and 87. Ground terminal 86 and apply +12
VDC to terminal 85. The relay should make and break
continuity between terminals 30 and 87 as +12 VDC is
applied and removed from terminal 85.
3. Disconnect voltage and leads from the terminals.
Figure 11
86 87
85 30
30
87
85 86
Figure 12
86 87
85 30
85 86
87
30
Start Relay (Kohler Engine)
The start relay used on Workman vehicles with a Kohler
engine is attached to the frame near the hydraulic oil fil-
ter.
Testing
1. Disconnect the harness connector from the relay that
is to be tested.
2. Connect multimeter (ohms setting) leads to relay ter-
minals 30 and 87 (Fig. 13). Ground terminal 86 and apply
+12 VDC to terminal 85. The relay should make and
break continuity between terminals 30 and 87 as +12
VDC is applied and removed from terminal 85.
3. Disconnect voltage from terminal 85 and multimeter
lead from terminal 87.
4. Connect multimeter (ohms setting) leads to relay ter-
minals 30 and 87A. Apply +12 VDC to terminal 85. The
relay should make and break continuity between termi-
nals 30 and 87A as +12 VDC is applied and removed
from terminal 85.
5. Disconnect voltage and multimeter leads from the
relay terminals. Reconnect relay to vehicle wire har-
ness.
Figure 13
86
85
87A 87
30
86
87A
30
87
85
Electrical System