7 - 38
G. Glow Plug Relay Test
NOTE: Before testing the glow plug relay, the preheat
timer should be tested first. The glow plug relay is con-
nected to the glow plug and to the preheat timer.
Test equipment and tools:
a. DC voltage test meter with test probes (multimeter
or 12 volt dc test lamp can also be used).
b. Ohm meter.
c. Test jumpers with alligator clips.
d. 12 volt dc power supply or 12 volt dc battery.
1. Connect the negative (-) test probe to ground or the
negative (-) battery terminal.
2. Connect the positive (+) test probe to terminal 30 of
the glow plug relay.
3. Turn the ignition key switch to the RUN position. The
glow plug relay should energize for approximately
five to ten seconds. If the glow plug relay does not
energized, continue with the test.
4. Remove the glow plug relay from the tractor.
5. Connect the ohm meter to terminals 30 and 87 of the
glow plug relay as shown in Figure 39.
6. Connect a jumper from terminal 85 of the glow plug
relay to the negative (-) terminal of the battery or
power supply.
7. Connect a jumper from terminal 86 of the glow plug
relay to the positive (+) terminal of the battery or
power supply.
The relay should energize and continuity (0 Ohm)
should be indicated between terminals 30 and 87 of
the glow plug relay, if not, replace the relay. An audi-
ble “click” should be heard when the relay energizes.
If the relay does energize, check the wiring and con-
nectors.
Figure 39. Testing Glow Plug Relay
7 Electrical System Service
Component Tests
H. Ignition Switch Tests
NOTE: Early models used the 5-pin steel body switch
(Figure 40) and later models use the 6-pin steel switch
(Figure 41).
To perform these tests, the ignition switch needs to be
removed from the dashboard.
TEST START POSITION
NOTE: To perform this test, the ignition key switch may
need to be placed in a vice to hold the switch.
1. Set VOM to Ohm.
2. Connect test leads to terminals B and L of the ignition
key switch. The test meter should show no continuity
(infinity/open if using an ohm meter).
3. Turn the ignition key switch to the START position.
4. The test meter should show continuity (zero
ohm/short if using an ohm meter).
5. Release the ignition key switch. The test meter
should return to showing no continuity (infinity/open if
using an ohm meter).
6. Repeat steps 2 through 5 for each combination of ter-
minals listed in the table for the “START” circuit of the
appropriate figure. (Figure 40 for 5-pin steel body
switches and Figure 41 for the 6-pin steel body
switches.)
7. Check all other connection combinations for no conti-
nuity (open). The combinations tested in steps 2
through 5 should be the only combinations that have
continuity; all other connection combinations should
have no continuity.
TEST RUN POSITION
1. Set VOM to Ohm.
2. Connect test leads to terminals B and L. The test
meter should show no continuity (infinity/open if using
an ohm meter).
3. Turn the ignition key switch to the RUN position. The
test meter should show continuity (zero ohm if using
an ohm meter).
4. Repeat steps 2 and 3 for each combination of termi-
nals listed in the table for the “RUN” circuit of the
appropriate figure (Figure 40 for 5-pin steel body
switches and Figure 41 for the 6-pin steel body
switches).
5. Check all other connection combinations for no conti-
nuity (open). The combinations tested in steps 2 and
3 should be the only combinations that have continu-
ity; all other connection combinations should have no
continuity.
Not
for
Reproduction
Summary of Contents for AGCO Allis 2000 Series
Page 1: ...USE N o t f o r R e p r o d u c t i o n...
Page 18: ...1 16 1 General Information Notes N o t f o r R e p r o d u c t i o n...
Page 24: ...2 Troubleshooting Notes 2 6 N o t f o r R e p r o d u c t i o n...
Page 52: ...5 Belt Replacement Notes 5 6 N o t f o r R e p r o d u c t i o n...
Page 101: ...7 33 7 Electrical System Service Troubleshooting Notes N o t f o r R e p r o d u c t i o n...
Page 114: ...7 46 7 Electrical System Service Notes N o t f o r R e p r o d u c t i o n...
Page 126: ...8 Power Steering Service Notes 8 12 N o t f o r R e p r o d u c t i o n...
Page 162: ...11 Transaxle Removal Installation Notes 11 10 N o t f o r R e p r o d u c t i o n...
Page 206: ...13 Engine Removal Installation Notes 13 36 N o t f o r R e p r o d u c t i o n...
Page 244: ...17 Miscellaneous Component Service Notes 17 4 N o t f o r R e p r o d u c t i o n...
Page 304: ...19 Implement Lift Service Notes 19 10 N o t f o r R e p r o d u c t i o n...
Page 312: ...20 Power Steering Unit Service Notes 20 8 N o t f o r R e p r o d u c t i o n...
