Glow Controller
The controller is located under the right, lower corner of
the instrument panel.
5. Ifany ofthe conditions in Step 3are notmet or power
to terminal 1 exists and any of the other conditions in
Step 4 are not met:
NOTE: Refer to Electrical Diagrams -- Chapter 8 when
troubleshooting the glow controller.
A. Verify continuity ofthe circuitry from the battery to
the glow relay and glow plugs (see Electrical Dia-
grams -- Chapter 8).
Controller Operation
1.
tion, the controller energizes the glow plugs and lights
up the glow lamp for 10 seconds.
When the ignition switch is placed in the RUN posi-
B. Verify continuity ofthe circuitry from the battery to
ignition switch, glow controller, glow lamp, glow
relay, and ground (see Electrical Diagrams -- Chap-
ter 8).
2.
When the ignition switch is held in the START posi-
tion, the glow plugs will energize while the switch is held
in START and the glow lamp will not light.
C. Replace parts as necessary.
6.
noid.
Connect electrical connector to the fuel stop sole-
3.
RUN,theglowplugs willde--energizeandtheglowlamp
will remain off.
When the ignition switch is released from START to
2
Controller Checks
1.
Make sure there is power from the battery.
3
2
1
6
5
4
2.
noid to prevent the engine from starting.
Disconnect electrical connector to the fuel stop sole-
3.
Place ignition switch in the RUN position. Verify the
following while in the RUN position:
A. Glow indicator lamp is on.
B. Glow relay is energized.
1
3
C. Glow plugs are energized.
D. Glow indicator lamp goes out and glow plugs de--
energize after 10 seconds.
Figure 33
1.
2.
Glow controller end view
3.
Side view
Top view
4.
the following while in the START position:
Place ignition switch in the START position. Verify
A. Glow indicator lamp is out.
B. Glow relay is energized.
C. Glow plugs are energized.
D. Power exists at terminal 1 of the glow controller.
NOTE: Ifthereisnopowertoterminal1oftheglowcon-
troller, verify continuity of the circuitry from the ignition
switch to the controller and perform Step 4 again (see
Electrical Diagrams -- Chapter 8).
Electrical System (Rev. D)
Page 5 -- 22
Groundsmaster 3500--D
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