Toro REELMASTER 2300-D, Руководство по обслуживанию, Страница: 136 / 186

Starter and High Temperature Shut Down Relays
1. Verify coil resistance between terminals 86 and 85
with a multimeter (ohms setting). Resistance should be
from 80 to 90 ohms.
2. Connect multimeter (ohms setting) leads to relay
terminals 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 ap-
plied and removed from terminal 85.
87A
30
87
86 85
85
86 87A 87
30
3. Disconnect voltage from terminal 85 and multimeter
Figure 4
lead from terminal 87.
4. Connect multimeter (ohms setting) lead to relay ter-
minal 30 and 87A. Apply +12 VDC to terminal 85. The
relay should break and make continuity between termi-
nals 30 and 87A as 12 VDC is applied and removed from
terminal 85.
5. Disconnect voltage from and multimeter leads from
relay terminals.
High Temperature Shutdown Switch
The switch is located on top of the water pump. The
pump is on the left end of the engine inside of the fan
pulley assembly. There is a tan wire attached to the
switch.
1. Lower the coolant level in the engine and remove
the high temperature shutdown switch.
2. Put the switch in a container of oil with a thermome-
ter and slowly heat the oil (Fig. 6).
Figure 5
CAUTION
prevent personal injury or fire.
Handle the hot oil with extreme care to
1. High temperature shutdown switch
3. Check the continuity of the switch with a multimeter
(ohms setting). The switch is normally open and should
close at 206 to 218
_
F (97 to 103
_
C).
4. Allow the oil to cool. The switch should open at
194
_
F (90
_
C).
Figure 6
Electrical System
Page 5 – 18
Reelmaster 2300–D/2600–D
1