JLG G6-42A Service Manual - Manual (Page 217)

9-53 G6-42A, G9-43A, G10-43A
Electrical System
4. Start the engine, allow it to reach operating
temperature and observe the operator’s display
cluster for warning indication. If the sender is not
defective, the problem could be elsewhere; possibly
in a shorted wire, damaged transmission, improper
or low fluid, etc.
5. Close and secure the engine cover.
6. Remove the Do Not Operate Tags from both the
ignition key switch and the steering wheel.
9.11.5 Engine Coolant Temperature
Sender / Switch
a. Engine Coolant Temperature Sender Removal
1. Park the machine on a firm, level surface, level the
machine, fully retract the boom, lower the boom,
place the transmission control lever in
(N) NEUTRAL, engage the park brake and shut the
engine OFF.
2. Place a Do Not Operate Tag on both the ignition key
switch and the steering wheel.
3. Open the engine cover. Allow the system fluids to
cool.
4. Properly disconnect the battery.
5. Unplug the engine coolant temperature sender /
switch connector from the wiring harness connector.
6. The Engine Coolant Temperature sender (1) is
threaded into the engine block. Remove the sender.
b. Engine Coolant Temperature Sender / Switch
Inspection and Replacement
Inspect the sender / switch and the wiring harness
connector terminals for continuity. Replace a defective or
faulty sender with a new part.
c. Engine Coolant Temperature Sender Installation
and Testing
1. Thread the engine coolant temperature sender into
the engine block snugly, then connect the sender
connector to the wiring harness connector.
2. Properly connect the battery.
3. Check for proper coolant level.
4. Start the engine, allow it to reach operating
temperature and observe the operator’s instrument
cluster for warning indication. If the sender is not
defective, the problem could be elsewhere; possibly
in a shorted wire, improper-running engine, improper
or low coolant, obstructed or faulty radiator, coolant
pump, loose fan belt, defective instrument display,
etc.
5. Close and secure the engine cover.
6. Remove the Do Not Operate Tags from both the
ignition key switch and the steering wheel.
MY0450
1
2
JOHN DEERE
MY1580
1
2
PERKINS