Prior to any maintenance or repair of electrical components,
disconnect the grounding cable from the negative post of the
battery. Disconnect the cable from the positive post as well.

Never place metal objects on the battery to avoid
short-circuits.

Battery gases are flammable. Never get near batteries with open
flames or sparks. During recharging, the generation of gases is
higher.

Battery gases are dangerous if contacting the skin or other
materials.

General Layout of Electrical System

The electric wirings are divided into three main groups:

Cab wiring group: identified by different colors connected to
all the electrical components in the cab.
Front frame wiring group: identified by numbers, connected to
all the electrical components involving the front frame.

Rear frame wiring group: identified by numbers, connected to
all the electrical components involving the rear frame.

The three groups of main wirings are connected among themselves
by four connectors (A-B-C-D) located in the area under the cab
floor. All wires are connected to the logic board (S) located
inside the rear panel behind the operator’s seat.

Connectors: A-B-C-D

Logic board: S

1. Cab wiring

2. Front frame wiring

3. Rear frame wiring

Logic Board

The logic board is located inside the rear panel behind the
operator’s seat. To reach it, loosen the two retaining knobs. All
the components of the machine are connected to the board by the CN
connections.

FAQ

Q: How should I handle the battery when working on the
electrical system?

A: Prior to any maintenance or repair of electrical components,
disconnect the grounding cable from the negative post of the
battery. Disconnect the cable from the positive post as well. Never
place metal objects on the battery to avoid short-circuits. Battery
gases are flammable, so never get near batteries with open flames
or sparks. During recharging, the generation of gases is higher.
Battery gases are dangerous if contacting the skin or other
materials.

Q: How are the electric wirings divided in the electrical
system?

A: The electric wirings are divided into three main groups: cab
wiring group, front frame wiring group, and rear frame wiring
group. These groups are connected among themselves by four
connectors located under the cab floor. All wires are connected to
the logic board located inside the rear panel behind the operator’s
seat.

View Fullscreen

SECTION 7
ELECTRICAL SYSTEM
CONTENTS

PARAGRAPH SUBJECT

PAGE

SAFETY RULES ……………………………………………………………………………………………………………..

7-l

7.1

GENERAL LAY-OUT OF ELECTRICAL SYSTEM ………………………………………… 7-2

7.2 7.2.1 7.2.2

LOGIC BOARD ………………………………………………………………………………………..

7-3

Connections relays timers buzzer …………………………………………………………

7-3

Fuses ……………………………………………………………………………………………………..

7-4

7.3

CONNECTORS ……………………………………………………………………………………..

7-5

7.4 7.4.1

CA0 INSTRUMENT CLUSTER ………………………………………………………………….

7-7

Indicators on instrument cluster ………………………………………………………………….

7-9

7.5

SWITCH PANEL ………………………………………………………………………………………

7-9

7.6

GEARSHIFT CONTROL ……………………………………………………………………………

7-10

7.7

COMPONENTS ON MACHINE

.. .. .. .. … … . .. … … .. …. 7-11

WHO-W130

ELECTRICAL SYSTEM

7-1

a SAFETY RULES

a WARNING: When working on the electrical system, always wear safety glasses and remove
rings, wrist watches or any other metal jewellely.

a WARNING: Priorto any maintenance orrepairof electrical components, disconnect the
GROUNDlNGCABLE”A”fromthenegativepost “B” of the battery. DISCONNECT CABLE “c” FROM POSITIVE POST 3″.

DISCONNECT BAlTERY 12V x 2

a WARNING: NEVER PLACE METAL OBJECTS on the battery to avoid short-circuits.
a WARNING: BATTERY GASES ARE FLAMMABLE. Never get near batteries with open flames or sparks. During recharging, the generation of gases is higher.
a WARNING: BATTERY GASES ARE DANGEROUS if contacting the skin or other materials.

7-2

ELECTRICAL SYSTEM

WHO-W130

7.1 GENERAL LAY-OUT OF ELECTRICAL SYSTEM

The electric wirings are divided into three main groups:
1. Cab wiring group. identified by different colours connected to all the electrical components in the cab.
2. Front frame wiring group identified by numbers, connected to all the electrical components involving the front frame.

3. Rear frame wiring group, identified by numbers, connected to all the electrical components involving the rear frame.
The three groups of main wirings are connected among themselves by four connectors (A-B-C-D) located in the area under the cab floor. All wires are connected to the logic board (S) located inside the rear panel behind the operator’s seat

A-B-C-D. Connectors – S. Logic board 1. Cab wiring 2. Front frame wiring 3. Rear frame wiring.

WllO-w130

ELECTRICAL SYSTEM

7-3

7.2 LOGIC BOARD

The logic board is located inside the rear panel behind the operator’s seat. To reach it, loosen the two retaining knobs. Al the components of the machine are connected to the board by the “CN” connections.

Also, the fuses. the solenoid switches (“RL” relays), timers 7″ the cab buzzer and two switches “SWl” and “SW2” to divert the gearshift control from manual to mechanic and viceversa, are located.

7.2.1 CONNECTIONS- RELAYS-TIMERS – BUZZER

S. Logic board.

7-4

ELECTRICAL SYSTEM

WHO-W130

7.2.2 FUSES

—

WllO-w130

ELECTRICAL SYSTEM

7-5

7.3 CONNECTORS

The connectors (A-B-C-D) are located in the lower part of the cab, connecting the main wiring to the logic board 6). The coloureb wires arrive from the upper side, the numbered wires from the lower side. On connectors A-B-C (fig. connectors) there are 24

connecting points, whereas on connector D (fig. connectar D) there are 18. The description and the function of each wire on the connector has a corresponding numberlcolour, as it can be found in the description of each connector.

co,aur

CONNECTOR A

12 3
7 13

4 56
12 19

19 20 21

22 23 24

Symbol of wires

A-B-C-D. Connectors
Carefully read personal and machine SAFETY PRECAUTIONS(at the beginning of this manual)

7-6

ELECTRICAL SYSTEM

Wllo-w130

CONNECTOR q

12 18

19 20 21

22 23 24

CONNECTOR C

12 3

7 13

4 5 6
12 18

19 20 21

22 23 24

CONNECTOR D

WllO-w130

ELECTRICAL SYSTEM

7-7

7.4 METERS AND SWITCHES CLUSTER

The operating status monitor system monitors the loader operating status by means of the sensors and switches installed on the loader and siplays the information on the cluster guage unit in the operator’s compartment to inform the operator of the current operating status of the loader.

The cluster guage unit consists of meters including the speedometer, monitor lamps (Warning lamps) which indicates whether or not each system is operating properly, and indicator lamps.

27-28

1 CONNECllON

7-8

ELECTRICAL SYSTEM

WllO-w130

Po*ifion* on connections

r——————l

FM WTM OTM EHM SM Ll -L13 L14-L18

: FUEL METER ENGINE WATER TEMPERATURE GAUGE TRANSMISSION OILTEMPERATURE GAUGE ENGINE HOUR METER SPEEDOMETER MONITOR LAMPS INSTRUMENT LAMPS

Electric diagram of instrument and switch panel

WllO-w130 Meter
Scala

ELECTRICAL SYSTEM 7.4.1 INDICATORS ON INSTRUMENT CLUSTER

Engine water temperature gauge

67°C

135°C

Transmission oil temperature gauge

7-9
Fuel meter

1Standard value

80R

I 1on

7.5 SWITCH PANEL

14 10
15

1. Front windshield washer button – 2. Rear wiper swttch – 3. Rotary beacons switch – 4. Automatic transmission switch 6. Pre-heater indicator. 6. Emergency lights switch 7. Rear work lights switch – 6. Front work lights switch _9. Head lights and low beam switch – 10. L.T.S. ON switch – 11. Transmission cut-off switch – 12. Fan switch 13. Warm-cold switch 14. Air re-circulation switch 16. Conditioner switch 16. Cigarette lighter.

7-10

ELECTRICAL SYSTEM

WllO-w130

7.6 GEARSHIFT SELECTOR

Diagram of electric gearshift selector

WllO-w130

ELECTRICAL SYSTEM

7.7 COMPONENTS ON MACHINE

1 – STARTER MOTOR

WIRES
8+88 000

To battery To starter solenoid switch Ground

LOCATION

Left rear side of engine under fuel filters

2 – ENGINE STOP SOLENOID

WIRES

903

To starter switch (7)

LOCATION – On injection pump

3 – STARTER HEATER

4 – THERMOSTAT FOR STARTER HEATER

7-11
5 – FUEL SOLENOID VALVE

Illustration of components on engine
1. starter motor 2. Engine stop solenoid valve 3. Heater starter 4. Thermostat for s,arler heater 5. Fuel solenoid valve

Filter

7-12

ELECTRICAL SYSTEM

wiio-w130

PRESSURE SWITCHES ON BRAKE PEDAL VALVE

1 – STOP LIGHTS CONTROL SWITCH

WIRES 117 175

To fuse F9A on logic board To stop lights

TECHNICAL SPECIFICATIONS

Thread: Setting:

MlOxl 1.8 + 0.5 bar

2 – TRANSMISSION CUT-OFF SWmCH

WIRES 974
000

To switch for transmission arrangement To ground

cut-off

TECHNICAL SPECIFICATIONS

Thread: Setting: Tightening torque:

MlOxl 15+1 bar 2 daNm

3 – BRAKES ACCUMULATOR PRESSURE SENSOR

OIL LOW

WIRES
613 000

To instrument and switch cluster To ground on front frame

TECHNICAL SPECIFICATIONS

Thread: Setting:

R l/9 tapered 60 5 5 bar

Carefully read personal and machine SAFETY PRECAUTIONS (at the beginning of this manual)

WllO-w130

ELECTRICAL SYSTEM

7-13

AIR CLEANER CLOGGING SENSOR

WIRES
663 000

To indicator on instrument cluster To ground

TECHNICAL SPECIFICATIONS
Setting (closing of contact): 57 to 67 mbar Tightening: tighten manually, without using tools

m`,—-,,663 pP 000

ENGINE OIL LOW PRESSURE SENSOR

WIRES

503

To instrument and switch cluster

TECHNICAL SPECIFICATIONS

Thread: Setting:

R l/6 tapered 0.5 + 0.1 bar

Carefullyreadpersonaal ndmachineSAFETYPRECAUTION(Satthe beginningof this manual)

7-14

ELECTRICAL SYSTEM

PARKING BRAKE ENGAGED PRESSURE SWITCH

WIRES
662 000

To indicator on instrument cluster To ground

TECHNICAL SPECIFICATIONS

Thread: Setting:

R l/8 tapered 12+1 bar

WllO-w130

COOLANT MAX. TEMPERATURE SWITCH

WIRES
526 000

To indicator on instrument cluster To ground

TECHNICAL SPECIFICATIONS

Thread: Setting:

M16x1.5 101 2 1%

TRANSMISSION OIL MAX. TEMPERATURE SWITCH

WIRES 559
000

To indicator on instrument cluster To ground

and switch

TECHNICAL SPECIFICATIONS

Thread: Setting: Tightening torque:

M16x1.5 122?3″C 2 daNm

WllO-w130

WIRES
772 773 777

To diverter box To alternator To “+” of batteries

ELECTRICAL SYSTEM 50 AMP “LINK” FUSES

WIRES 163 000

To back-up alarm To ground

BACK-UP ALARM

7-15

WIRES 138 000

To horn relay 80 To ground

HORN

7-16

ELECTRICAL SYSTEM

BUCKET POSITIONER PROXIMITY SENSOR

WIRES
961 994 000

To bucket solenoid valve To F5C fuse on logic board To ground

TECHNICAL SPECIFICATIONS

Thread: Tghtening torque:

M16xl 2.5 daNm

LOCATION

On end of bucket control right cylinder rod

WllO-WI30

BOOM KICK-OUT PROXIMITY SENSOR

WIRES
980 995 000

To boom solenoid valve To F5C fuse on logic board To ground on frame

TECHNICAL SPECtFlCATlONS

Thread: lightening torque:

Ml&l 2.5 daNm

LOCATION – On front frame, at the upper end of left boom

WllO-w130

ELECTRICAL SYSTEM

7-17

MAIN SWITCH

LOCATION – Rear end of machine

EATERY

TO GROUND –

STARTER SOLENOID SWITCH

WIRES
700 802 088 000

Position G to starter switch Position g to starter neutraliser solenoid switch Position B to starter motor Position e to ground

7-18

ELECTRICAL SYSTEM

WllO-w130

TRANSMISSION (AUTOMATIC) GEAR-SHIFTSELECTOR

Diagram of electric gearshift selector

WllO-w130

ELECTRICAL SYSTEM

7-19

1″ TRANSMISSION SPEED SENSOR

WIRES
534 535

To ATC unit through connector D To ground

2″dTRANSMISSION SPEED SENSOR

WIRES
536 537

To ground To ATC unit through connector D

537

536

1″ speed sensor

D = distance between sensor and transmission gear (refer to setting)
Note for the installation of the sensors: Apply LOCTITE 572 to 1st and 2nd sensor. Setting: In order to obtain a correct installation of the sensors, tighten them to contact the transmission gear,
then loosen the sensor one and II2 turn.

7-20

ELECTRICAL SYSTEM

WllO-w130

ATC (AUTOMATIC TRANSMISSION) ELECTRONIC UNIT

007,

“0

0 0

E0 l 0

0”

“0

r
L IJosition 1
2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

CN2 Connection
Speed sensor Zround !”d indicator 1%in’ dicator 4PS solenoid Switch “0′ Switch “A Reverse selector Forward selector Tachometer P speed sensor Ground Batteries Solenoid “B” Solenoid “A” Solenoid *Reverse” Solenoid “Folward

Position 1 2 3 4 5 6 7 8 9 10 11 12 13

CNI Connection
Ground Switch, parking brake engaged Selection “2” Selection `1″ Selection AUTOMIMANUAL Brakes 4″ indicator Pressure switch Accelerator pedal sensor Odometer (not available) Shift down switch
3* indicator

WllO-w130
use
i /

ELECTRICAL SYSTEM Pressure switch

7-21
Q

ATC

*
Carefullyreadpawmai and machineSAFETYPRECAUTDNS(atthe beginningOfmissmanual,

7-22

ELECTRICAL SYSTEM

PROXIMITY SENSOR (Accelerator pedal)

WIRES
538 981 000

To ATC electronic unit To FlOAfuse on logic board To ground

TECHNICAL SPECIFICATIONS

Thread: Tightening torque:

Ml&l 2 daNm

LOCATION – Under accelerator pedal

ACCELERATOR PEDAL

Wllo-w130

Documents / Resources

New Holland LW110 Wheel Loaders [pdf] User Manual
LW110 Wheel Loaders, LW110, Wheel Loaders, Loaders

New Holland LW110 Wheel Loaders User Manual

LW110 Wheel Loaders

Product Information

Specifications

Product Usage Instructions

Safety Rules

General Layout of Electrical System

Logic Board

FAQ

Q: How should I handle the battery when working on the
electrical system?

Q: How are the electric wirings divided in the electrical
system?

Documents / Resources

References

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