New Holland Tractor Workmaster 50 / Workmaster 60 / Workmaster 70 / Tier 4B (final). SERVICE MANUAL

Wheels - Front wheels

Front wheels - Adjust

Tread adjustment

The front axle consists of a hollow center beam (1) with

a telescopic section (2) at each end. Seven holes at

50 mm (1.97 in) intervals are provided in the telescopic

sections for adjustment purposes. Adjustment of the

front wheel track width is done by extending both ends

of the axle equally.

To extend the axle, apply the hand brake and place

blocks at the front and rear of the rear wheels. Jack

up the front axle and place on axle stands. Remove

the securing bolts, (3), securing the left-hand telescopic

section to the center beam.

Repeat the same for the right-hand side of the axle.

GNIL14TR00500AA

The tie rod is adjustable and consists of a central, hol-

low tube with a solid extendible section at each end.

The left-hand end of the tie rod has a number of notches

(1) at 50 mm (1.97 in) intervals. A locating bolt (2)

passes through a clamp and one of the notches in the

solid section and locks the tie rod assembly at the de-

sired length. Additionally, the right-hand end of the tie

rod is threaded (3) to provide fine adjustment of toe-in.

Remove the locating bolt (2) from the left-hand end of

the tie rod. This will permit the tie rod to extend or

retract freely.

76099305N

Reset both axle telescopic sections. Passing the secur-

ing bolts through the center beam and telescopic sec-

tions, as indicated in 3 and table below:

GNIL14TR00500AA

Securing

2WD

Bolt

Locations

2WD

7.50 - 16

Dished In

1424 mm

1524 mm

1624 mm

1724 mm

1824 mm

1924 mm

2WD

Dished Out

44.1 [44.511] / 5

Wheels - Front wheels

Securing

2WD

Bolt

Locations

1472 mm

1572 mm

1672 mm

1772 mm

1872 mm

1972 mm

4. Tighten the nuts on the axle extension securing bolts to

118 N·m (87 lb ft).

With both front wheels parallel, install the locating bolt

(2) in the nearest aligning notch in the tie rod. Tighten

the nut on the locating bolt to 24.5 N·m (18 lb ft).

NOTE: The tread settings shown are approximate. The

front wheel discs are off-set, relative to the center line of

the rim. The tread settings in the table are with the dished

side of the wheel nearest the axle hub. If the front wheels

are reversed on the hubs the tread settings shown in the

table will be increased by approximately 25 mm (0.98 in).

Tractor model

Front wheel bolt torque

320.0 N·m (236.0 lb ft)

NOTE: Re-check all torque settings after 50 h of operation.

Tie rod

5. The tie rod located behind the axle must be disengaged

to permit adjustment of the axle. The tie rod is tele-

scopic and consists of a central hollow tube with a solid

extendible section at each end. Remove the locating

bolt (1) from both ends of the tie rod. The position

for the setting of the steering cylinder will also change

respectively. Reset the left and right axle telescopic

sections, passing the securing bolts through the center

beam and telescopic sections, as indicated in 3, see

chart.

86090130N

6. Remove the nut (1) at the right end of the tie rod. With-

draw the tie rod from arm (2). Loosen the bolt (3) and

rotate the threaded end to shorten or lengthen the tie

rod assembly until the toe-in is correct. Torque all bolts

or nuts securely to correct values.

20108792

44.1 [44.511] / 6

Wheels - Front wheels

Front wheels - Adjust

WARNING

Roll-over hazard!

Never operate the machine with a loose wheel rim or disc. Always tighten nuts and/or bolts to the

specified torque value and at the recommended intervals.

Failure to comply could result in death or serious injury.

W0346B

Tread setting

4WD

Front

Tread

Axle

Setting

9.5 —24

(A)

(B)

(C)

(D)(Standard)

1558.0 mm (61.3 in)

(E)

1522.0 mm (59.9 in)

(F)

1630.0 mm (64.2 in)

(G)

1650.0 mm (65.0 in)

(H)

1758.0 mm (69.2 in)

4WD

Front

Axle

R4 12.5/80-18

Front

1532 mm

44.1 [44.511] / 7

Wheels - Rear wheels

Rear wheel - Adjust

Tread adjustment

1. Rear wheel track adjustment is done by changing

the wheel rim relative to the center disc, the rim and/or

the disc relative to the axle hub or by interchanging the

rear wheels.

The drawings shown in the table illustrate the wheel

rim and disc positions viewed from rear of the tractor

relative to the hub at various track width settings. Track

width (the distance between the center of the tires) are

nominal and may vary by as much as 13 mm (0.5 in).

2. When installing or adjusting a wheel, torque the bolts

to the following values. Recheck after driving the tractor

for 1 hour and 8 hours operation, and thereafter at the

50 hour intervals:

NOTICE: When interchanging left and right wheel assem-

blies, ensure the “V” of the tire tread remains pointing in the

direction of forward travel of tractor for better grip.

With certain options and/or tire sizes, narrower track set-

tings may not be possible due to minimal clearance be-

tween tires and fenders or equipment.

76096164N-85X23

44.2 [44.520] / 3

Wheels - Rear wheels

Rear disc to hub bolts

192 N·m (142 lb ft)

Rear disc to rim nuts

239 N·m (176 lb ft)

Rear Axle

2WD

2WD & 4WD

4WD

Configuration

13.6 R 28

14.9 R 28

R4 18.4X24

(A)

N/A

(B)

N/A

1438.0 mm (56.6 in)

(C)

N/A

(D)

1336.0 mm (52.6 in)

N/A

(E)

1420.0 mm (56 in)

N/A

(F)

1534.0 mm (60.4 in)

N/A

(G)

1623.0 mm (64 in)

N/A

(H)

1737.0 mm (68.4 in)

N/A

44.2 [44.520] / 4

CNH Industrial America New Holland Site 100 Brubaker Avenue New Holland, Pennsylvania United States

17557

SERVICE - Technical Publications & Tools

PRINTED IN U.S.A.

NEW HOLLAND policy is one of continuous improvement and the right to change prices, specification or equipment

at any time without notices is reserved.

All data given in this publication is subject to production variations. Dimensions and weight are approximate only and

the illustrations do not necessarily show products in standard condition. For exact information about any particular

product, please consult your NEW HOLLAND Dealer.

Contents

Electrical systems - 55

[55.000] Electrical system

55.1

[55.024] Transmission control system

55.2

[55.048] Rear Power Take-Off (PTO) control system

55.3

[55.100] Harnesses and connectors

55.4

[55.201] Engine starting system

55.5

[55.301] Alternator

55.6

[55.302] Battery

55.7

[55.404] External lighting

55.8

[55.405] External lighting switches and relays

55.9

[55.408] Warning indicators, alarms, and instruments

55.10

[55.512] Cab controls

55.11

[55.DTC] FAULT CODES

55.12

Electrical systems - Electrical system

Electrical system - General specification

Main system protection

Mega Fuse 125 A

Number of fuses for protection

Alternator

75 A

Battery type

12 V

Negative ground

BCI group 47

CCA 600-850

Cold-start aid

Yes

Starter motor - type

Solenoid operated

Starter kw (hp) rating

2.0 kW (2.7 Hp)

Bulb rating and type

Head light

12 V 55/65 W

Turn signal

12 V 21 W

Tail light

12 V 21 W / No. 1157

Parking lamp

12 V 5 W

Work lamp

12 V 50 W

Enhanced turn lamps (red)

12 V 21 W

55.1 [55.000] / 3

Electrical systems - Electrical system

Electrical system - Overview

The electrical system of the tractor consists of various

wiring harnesses, lights, switches, battery, alternator,

starter and instrument cluster.

Fuses (1) protect electrical circuits with thin pieces of

wire, which heat up and melt when too much current flows

through them. This opens circuit and protects the wiring

from burning. This can occur in the event of a ‘short

circuit’, or by connecting equipment which demands a

current greater than the circuit, designed to carry. The

fuse is specially designed and in the event of failure, a

new fuse of the same rating should be fitted.

NOTICE: The fuse should never be repaired or replaced

by a fuse of a higher rating.

GNIL14TR00762AA

If the fuse repeatedly ‘blows’ the cause must be investi-

gated and repaired.

55.1 [55.000] / 4

Electrical systems - Electrical system

Electrical system - Troubleshooting

Problem

Possible Cause

Correction

Charge light remains

Faulty alternator component.

Test alternator and repair a necessary.

illuminated

Short circuit to ground between alternator

Check wiring and repair as necessary.

and warning lamp.

Charge light does not

Blown fuse panel, 15 A instrument panel

Inspect 15 A fuse and replace as neces-

illuminate

fuse.

sary.

Faulty charge indicator bulb.

Inspect indicator bulb and replace as nec-

essary.

Open charge light circuit.

Inspect connections, grounds, and wiring

for charge circuit and repair as necessary.

Insufficient or no battery

Battery charge less than 75%.

Test battery. Charge, add water, or replace

charge, hard starting, or

as necessary.

dim indicator light

Fan belt slipping.

Check fan belt tension, adjust as neces-

sary.

Loose wiring connections.

Check wiring connections for charge cir-

cuit, repair as necessary.

Continuity fault in external wiring.

Check wiring harness and repair as neces-

sary.

Blown fuse panel, 15 A alternator excita-

Inspect 15 A fuse and replace as neces-

tion fuse.

sary.

Battery failure, frequent

Overcharge condition.

Check alternator voltage output and repair

burnout of lamps and

as necessary.

fuses

Ground circuit for alternator short-circuited.

Check alternator wiring and connections

and repair as necessary.

55.1 [55.000] / 5

Electrical systems - Transmission control system

Ground speed control - Test Transmission range safety switch

Workmaster™ 50

Workmaster™ 60

NOTE: Use an ohmmeter to test the transmission range safety switch for electrical continuity.

Extended position

1. With the transmission range safety switch plunger

in the extended position "A", there will be electrical

continuity across the terminal leads.

1. If continuity does not exist while the switch is in the

"Extended " position, the switch is defective and needs

replaced.

30002201

Retracted position (not shown)

1. With the switch plunger in retracted position, conti-

nuity will not exist between the terminal leads.

2. If continuity exits while the switch is in the "Retracted"

position, the switch is defective and needs replaced.

55.2 [55.024] / 3

Electrical systems - Rear Power Take-Off (PTO) control system

Power Take-Off (PTO) speed sensor - Static description PTO Safety

switch

The PTO safety switch, (1), is a double pole, single throw-

style switch located on the PTO control lever quadrant.

The switch has a rubber booted push button actuator and

is activated by the PTO clutch lever. When the PTO clutch

lever is in the "OFF" position, the switch button is "OUT"

when the PTO clutch is engaged the switch button is in

the "IN" position.

86072157

55.3 [55.048] / 3

Electrical systems - Rear Power Take-Off (PTO) control system

Power Take-Off (PTO) speed sensor - Remove

1. Remove the fender from left side of the tractor. See

Fenders and guards - Remove (90.116).

2. Loosen the bolts (1).

GNIL14TR00840AA

3. Lift the plate (1) access the wire connector.

4. Disconnect the wiring (2).

GNIL14TR00838AA

5. Loosen the bolts (1) and remove the sensor assem-

bly.

6. Loosen the nut (2) and remove the PTO sensor.

GNIL14TR00839AA

55.3 [55.048] / 4

Contents

Electrical systems - 55

Harnesses and connectors - 100

FUNCTIONAL DATA

Wiring harnesses

Electrical schematic sheet 02 SH02-POWER DISTRIBUTION:GEP FUSE BOX

Electrical schematic sheet 03 SH03-STARTING/CHARGING SYSTEM

Electrical schematic sheet 04 SH04-POWER DISTRIBUTION:GEP RELAY BOX

Electrical schematic sheet 05 SH05-GROUNDING SYSTEM

Electrical schematic sheet 06 SH06-IGNITION/CONTROL SWITCHES

Electrical schematic sheet 07 SH07-INSTRUMENT CLUSTER: ADIC

Electrical schematic sheet 08 SH08-ENGINE CONTROL UNIT: ECU

Electrical schematic sheet 09 SH09-SAFETY LOGIC

Electrical schematic sheet 10 SH10-FRONT HEAD LIGHTS

Electrical schematic sheet 11 SH11-REAR LIGHTS

Electrical schematic sheet 12 SH12-DIAGONESTIC/TRAILER SOCKET

Electrical schematic sheet 01 - Power distribution and glow plugs (engine schematics)

Electrical schematic sheet 02 - Engine Control Unit (ECU) power and after treatment system (engine

schematics)

Electrical schematic sheet 03 - Engine sensors and fuel injection (engine schematics)

Wire connectors

Component diagram 00

Component diagram 01

Component diagram 02

Component diagram 05

Component diagram 10

Component diagram 20

Component diagram 21

Component diagram 30

Component diagram 40

Component diagram 50

Component diagram 51

Component diagram 52

Component diagram 60

Component diagram 61

Component diagram 70

Component diagram 71

55.4 [55.100] / 2

Component diagram 90

Component diagram 00 - Connectors X-9001 to X-9009

Component diagram 01 - Connectors X-9010 to X-9019

Component diagram 02 - Connectors X-9020 to X-9029

Component diagram 03 - Connectors X-9030 to X-9039

Component diagram 10 - Connectors X-9101 to X-9109

Component diagram 11 - Connectors X-9110 to X-9119

Component diagram 12 - Connectors X-9120 to X-9129

Electrical components

Fuse description

Voltage source description

Relay description

Motor description

Switch description

SERVICE

Wiring harnesses

Repair

DIAGNOSTIC

Wiring harnesses

Troubleshooting Safety start circuit - Operator present

Troubleshooting Safety start circuit - Operator not present

Troubleshooting Safe Operation - Operator Present

Troubleshooting Safe operation - Operator not present, PTO "OFF"

Troubleshooting Safe operation - Operator not present; PTO “ON”

55.4 [55.100] / 3

Electrical systems - Harnesses and connectors

Wire connectors - Component diagram 00

X-001 - (84380518) (Female)

84380518

From

Wire

Description

Color-Size

Frame

SP-019-P-X

009R

BK - 0.75

SHEET 04

SP-013-P-X

055

RD - 3.0

SP-019-P-X

009L

BK - 0.5

SP-069-P-X

069B

RD - 1.5

SP-056-P-X

056

OR/GN - 3.0

SP-022-P-X

022B

RD/GN - 0.75

X-406B pin 10 TO MAIN

059

GN/YE - 0.5

HARNESS

SP-019-P-X

009P

BK - 0.75

SP-013-P-X

055A

RD - 3.0

SP-017-P-X

009E

BK - 0.75

X-009 pin 85 CRANKING

050

BL - 0.75

SHEET 02

RELAY

X-404B pin 22 MAIN-ENGINE

076

OR/BL - 1.5

SHEET 04

INTERCONNECT

SP-022-P-X

022A

RD/GN - 0.75

SP-017-P-X

009F

BK - 0.75

X-406B pin 7 TO MAIN

053

YE - 0.75

HARNESS

SP-019-P-X

009S

BK - 0.5

SP-025-P-X

031A

RD/BL - 1.5

SHEET 02

SP-017-P-X

009K

BK - 0.5

SHEET 04

SP-097-P-X

095

GY - 0.75

X-216B pin 5 HEADLAMP

032

WORK LAMP

OR - 1.5

INTERCONNECT

X-406B pin 3 TO MAIN

091

PRP - 0.5

HARNESS

X-404B pin 4 MAIN-ENGINE

108

VT - 0.75

INTERCONNECT

SP-096-P-X

096B

GY - 0.5

SP-019-P-X

009M

BK - 0.5

SP-069-P-X

069A

RD - 1.5

SP-017-P-X

009W

BK - 0.75

X-201 (Female) pin 62 ECU

046

BL - 0.75

VEHICLE

SP-017-P-X

009V

BK - 0.75

X-216B pin 1 HEADLAMP

100

GN/YE - 1.5

INTERCONNECT

X-406B pin 11 TO MAIN

074

BL/YE - 0.5

HARNESS

F-002-P-38 GEP - FUSE BOX

115

OR - 0.75

X-001A - [ G-001] (Male)

From

Wire

Description

Color-Size

Frame

PIN1

X-004A (Male) pin PIN1

001

BATTERY CABLE

RD - 40.0

SHEET 03

POSITIVE

55.4 [55.100] / 33

Electrical systems - Harnesses and connectors

X-001B - [ G-001] (Male)

From

Wire

Description

Color-Size

Frame

PIN1

X-002A (Male) pin PIN1

002

BATTERY CABLE

BK - 40.0

SHEET 03

GROUND TERMINAL

GROUND

X-002A - GROUND TERMINAL (Male)

From

Wire

Description

Color-Size

Frame

PIN1

X-001B pin PIN1

002

BATTERY CABLE

BK - 40.0

SHEET 03

GROUND

X-002B - FENDER GROUND (84153309) (Male)

84153309

From

Wire

Description

Color-Size

Frame

SP-010-P-X

010

FENDER GROUND

BK - 6.0

SHEET 05

X-002C - MAIN HARNESS GND (84153309) (Male)

84153309

From

Wire

Description

Color-Size

Frame

SP-005-P-X

005

MAIN HARNESS GND

BK - 6.0

SHEET 05

55.4 [55.100] / 34

Electrical systems - Harnesses and connectors

X-002D - ECU/ENGINE GROUND (84179566) (Male)

84179566

From

Wire

Description

Color-Size

Frame

SP-009-P-X

009

ECU/ENGINE GROUND

BK - 6.0

SHEET 05

X-003 - IGNITION SWITCH [ S-001] (84479009) (Female)

84479009

From

Wire

Description

Color-Size

Frame

SP-106-P-X

021A

RD - 3.0

SHEET 06

X-406A-P-2

065

YE - 0.75

SP-101-P-X

089A

RD/GN - 2.5

X-004 - DIODE (84179574) (Female)

84179574

From

Wire

Description

Color-Size

Frame

SP-096-P-X

096A

GY - 0.75

SHEET 04

SP-097-P-X

095A

GY - 0.75

55.4 [55.100] / 35

Electrical systems - Harnesses and connectors

X-004A - [ M-001] (Male)

From

Wire

Description

Color-Size

Frame

PIN1

X-001A (Male) pin PIN1

001

BATTERY CABLE

RD - 40.0

SHEET 03

POSITIVE

X-005 - LIGHT SWITCH (84179574) (Female)

84179574

From

Wire

Description

Color-Size

Frame

SP-060-P-X

060

BL/YE - 0.75

SHEET 06

SP-029-P-X

029C

GN/OR - 1.5

HORN/LIGHT/TURN

WIRE235

SWITCH-P-PWR1

X-406A-P-10

073

GN/YE - 0.75

SP-058-P-X

058

BL/BK - 0.75

X-006 - ECU RELAY (47781083) (Male)

47781083

55.4 [55.100] / 36

Electrical systems - Harnesses and connectors

X-007 - HORN SWITCH CN1 (87581782) (Female)

87581782

From

Wire

Description

Color-Size

Frame

SP-029-P-X

029B

GN/OR - 0.75

SHEET 06

X-008 - HORN SWITCH CN2 (87581782) (Female)

87581782

From

Wire

Description

Color-Size

Frame

X-406A-P-12

071

YE/BL - 0.75

SHEET 06

X-009 - CRANKING RELAY (47781083) (Male)

47781083

55.4 [55.100] / 37

Electrical systems - Harnesses and connectors

Wire connectors - Component diagram 01

X-011 - TURN FLASHER (47781082) (Male)

47781082

X-012 - TURN SWITCH (84179572) (Female)

84179572

From

Wire

Description

Color-Size

Frame

F-003-P-1 MINI FUSER

030

TURN/STOP LAMP

LG - 0.75

SHEET 06

X-011 pin 8 TURN FLASHER

061

LG/BL - 0.75

X-011 pin 7 TURN FLASHER

062

LG/WH - 0.75

X-013 - WORK LAMP (84179576) (Female)

84179576

From

Wire

Description

Color-Size

Frame

SP-029-P-X

029D

GN/OR - 1.0

SHEET 06

SP-090-P-X

090A

VT - 0.75

55.4 [55.100] / 38

Electrical systems - Harnesses and connectors

X-014 - SAFETY BUZZER (87700098) (Female)

87700098

From

Wire

Description

Color-Size

Frame

SP-025-P-X

031B

RD/BL - 0.75

SHEET 09

X-406B pin 8 TO MAIN

034

BL - 0.75

HARNESS

SP-159-P-X

159B

PK/WH - 0.5

SP-009-P-X

009T

BK - 0.5

SHEET 05

SP-085-P-X

084

PK - 0.75

SHEET 02

X-015 - TO MEGA FUSE [ F-001] (84488487) (Male)

84488487

From

Wire

Description

Color-Size

Frame

X-901 (Male) pin 1

008

RD - 8.0

SHEET 03

ALTERNATOR B+

X-016 - BRAKE SWITCH (84182898) (Female)

84182898

55.4 [55.100] / 39

Electrical systems - Harnesses and connectors

From

Wire

Description

Color-Size

Frame

SP-051-P-X

051A

YE/RD - 0.75

SHEET 09

SP-156-P-X

156

GY - 0.75

X-017 - FROM MEGA FUSE [ F-001] (84488487) (Male)

84488487

From

Wire

Description

Color-Size

Frame

SP-007-P-X

007

RD - 8.0

SHEET 03

X-018 - HOME ENTER SWITCH [ S-007] (87745329) (Female)

87745329

From

Wire

Description

Color-Size

Frame

X-050 (Female) pin 20

038

NAVIGATION SW ENTER

YE/GN - 0.75

SHEET 07

INSTRUMENT CLUSTER

CN-1

SP-006-P-X

005E

BK - 0.75

SP-006-P-X

005F

BK - 0.75

X-050 (Female) pin 21

039

NAVIGATION SW HOME

YE/BL - 0.75

INSTRUMENT CLUSTER

CN-1

55.4 [55.100] / 40

New Holland Tractor Workmaster 50 / Workmaster 60 / Workmaster 70 / Tier 4B (final). SERVICE MANUAL - page 14