New Holland LS140 Workshop Manual page 524

FUEL SYSTEM COMPONENTS
The fuel system consists of a fuel tank located in the
left side of the engine compartment at 1; fuel tank
pickup tube, 2; fuel tank sending unit, 3; inline fuel
filter, 4; electric fuel pump, 5; fuel filter (water), 6;
injection pump, 7; and return fuel line, 8, from the
injector bleed off to the tank. The fuel flow is
controlled by an electric fuel solenoid, 9, which is
controlled by the EIC (Electronic Instrument Cluster).
FUEL GAUGE
In the center of the EIC panel is the fuel gauge,
implemented as a vertical 10-segment green LED
bar graph. The lowest segments will flash when the
fuel level is low. An audible alarm will accompany the
flashing light for about 5 seconds.
FUEL TANK SENDING UNIT (Fuel level)
STEP PRETEST INSTRUCTIONS
1 Loader on level with parking
brake engaged, key "ON"
position
Symptom: No bars lit
2 Symptom: Fuel level does not
read lower on gauge (too many
bars lit)
FUEL SYSTEM ELECTRICAL DIAGRAM
1. Key switch
2. EIC board
3. Fuel level sender
SECTION 55 - ELECTRICAL SYSTEM
TEST
EIC gauge and NO bars light up
sender operation
Jumper wire from
one terminal to YES (bars light up)
other at sender
Disconnect Bars stay lit
PU/W wire
Bars go out
PU/O
LTBL/O
4.
5.
6.
55-99
PROBABLE CAUSE AND
RESULT
CORRECTION
Check wires from sender to
EIC board, if OK, replace
EIC board
Replace sender
Check
shorted to ground. If OK,
replace EIC board.
Replace sender
PU/W
T
Electric fuel pump
Injector pump
Fuel shutoff solenoid
Copyright © New Holland
122
for PU/W wire
123