•
The main power relay supplies power to the fuses (and all of the circuits
protected by the fuses) in fuse block 2; refer to
. The main power relay is energized when the key
switch is in the R
UN
or S
TART
position.
•
The glow plug relay supplies power to the engine glow plugs. For model
31900 and 31901 machines; the glow plug relay is energized while the glow
switch is pressed. For model 31902 and 31903 machines, the glow relay is
energized by the Yanmar engine ECU.
•
The pull coil relay supplies power to the pull coil of the engine fuel solenoid
(models 31900 and 31901 only). The pull coil relay is energized by the start
interlock relay and the delay timer.
•
The cab power relay supplies power to the cab control circuits of
Groundsmaster 3310 machines.
•
The horn relay supplies power to the optional horn.
Testing Relays with 4 Terminals
Refer to
for this procedure.
1. Park the machine on a level surface, lower the cutting unit (or attachment),
engage the parking brake, set the key switch to the O
FF
position and remove
the key from the key switch.
2. Disconnect the ground cable at the battery; refer to
the Battery (page 6–64)
.
3. Remove the operator’s console covers; refer to
Operator’s Console Covers (page 7–23)
.
4. Locate the relay that is to be tested and disconnect the wire harness
connectors from the relay. Check the relay and the harness connector for
damage or corrosion and clean or repair if necessary.
g256779
Figure 95
Relay with 4 terminals
Note:
Prior to taking small resistance readings with a digital multimeter, short
the meter test leads together. The meter will display a small resistance value
(usually 0.5 ohms or less). This resistance is due to the internal resistance of
the meter and test leads. Subtract this value from the measured value for
the tested component.
5. Using a multimeter (ohms setting), measure coil resistance between
terminals 85 and 86. Resistance should be between 70 and 100 ohms.
Groundsmaster
®
3200, 3300 and 3310
Page 6–43
Electrical System: Testing the Electrical Components
19240SL Rev A
Содержание Groundmaster 31900
Страница 4: ...Reader Comments Page 4 Groundsmaster 3200 3300 and 3310 19240SL Rev A...
Страница 16: ...Safety Safety and Instructional Decals Page 1 8 Groundsmaster 3200 3300 and 3310 19240SL Rev A...
Страница 36: ...Specifications and Maintenance Special Tools Page 2 20 Groundsmaster 3200 3300 and 3310 19240SL Rev A...
Страница 86: ...Engine Service and Repairs Page 4 24 Groundsmaster 3200 3300 and 3310 19240SL Rev A...
Страница 316: ...General Information Operator Cab General Information Page 9 2 Groundsmaster 3200 3300 and 3310 19240SL Rev A...
Страница 332: ...Operator Cab Service and Repairs Page 9 18 Groundsmaster 3200 3300 and 3310 19240SL Rev A...
Страница 335: ...Model 31900 Drawing 133 6540 Rev A Sheet 1 of 1 19240SL Rev A Page A 3 Hydraulic Schematic 3200 2WD g296996...
Страница 336: ...Page A 4 19240SL Rev A Model 31901 Drawing 138 4500 Rev A Sheet 1 of 1 Hydraulic Schematic 3200 4WD g303916...
Страница 339: ...Model 31902 and 31903 Drawing 122 1220 Rev A Sheet 1 of 2 19240SL Rev A Page A 7 Electrical Schematic 3300 3310 g296989...
Страница 347: ...Model 31903 and 31909 Drawing 122 1435 Rev A Sheet 1 of 1 19240SL Rev A Page A 15 Wire Harness Cab Power g297520...
Страница 348: ...Page A 16 19240SL Rev A Model 31903 and 31909 Drawing 122 1245 Rev D Sheet 1 of 1 Wire Harness Cab Rooftop g256477...
Страница 349: ...Model 31903 and 31909 Drawing 122 1660 Rev A Sheet 1 of 1 19240SL Rev A Page A 17 Wire Harness Cab Control Panel g297533...
Страница 350: ...Page A 18 19240SL Rev A Model 31903 and 31909 Drawing 122 1678 Rev A Sheet 1 of 1 Wire harness Cab HVAC Adapter g297534...
Страница 351: ...Model 31993 Drawing 122 1248 Rev B Sheet 1 of 1 19240SL Rev A Page A 19 Wire Harness Cab Work Light Kit optional g260313...
Страница 355: ......
