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Reelmaster 4000–DPage 5 – 20Electrical System (Rev. A)
Alarm Relay
The alarm relay is located inside the steering tower.
1. Verify coil resistance between terminals 86 and 85
with a multimeter (ohms setting). Resistance should be
from 80 to 90 ohms. There should be continuity between
terminals 87A and 30.
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.
3. Disconnect voltage from terminal 85 and multimeter
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 and multimeter leads from the
relay terminals.
Figure 9
86
85
87A 87
30
86
87A
30
87
85
TOP VIEW
Hydraulic Oil Temperature Switch
The high temperature switch is located on the the bot-
tom of the hydraulic reservoir with two black wires and
one red wire connected to it (Fig. 10).
CAUTION
Make sure engine is cool before removing the
temperature switch.
1. Drain hydraulic fluid from the hydraulic reservoir,
and remove high temperature switch.
2. Put switch in a container of oil with a thermometer
and slowly heat the oil (Fig. 11).
CAUTION
Handle the hot oil with extreme care to prevent
personal injury or fire.
3. Check continuity of the switch with a multimeter
(ohms setting). The switch is normally open and should
close between 186 to 194
o
F (86 to 90
o
C).
4. Allow the oil to cool. The switch should open below
186
o
F (86
o
C).
1. Side view 2. End view
Figure 10
2
2
Figure 11