New Holland LW110 Wheel Loaders User Manual
- June 16, 2024
- New Holland
Table of Contents
LW110 Wheel Loaders
Product Information
Specifications
- Electrical System: WHO-W130
Product Usage Instructions
Safety Rules
When working on the electrical system, always wear safety
glasses and remove rings, wrist watches, or any other metal
jewelry.
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.
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.
10
17
27-28
1 CONNECllON
7-8
ELECTRICAL SYSTEM
WllO-w130
Poifion 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
1
12
11
13
14 10
15
98
76
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
A
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