New Holland CX720 Operating instructions

NEW HOLLAND
CX720
CX740
CX760
CX780
CX820
CX840
CX860
CX880
REPAIR MANUAL

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REPAIR MANUAL
CX720 , CX740 , CX760 , CX780 , CX820 , CX840 , CX860 , CX880
2 4/7/2006
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Contents
INTRODUCTION
DISTRIBUTION SYSTEMS A
PRIMARY HYDRAULIC POWER SYSTEM A.10.A
SECONDARY HYDRAULIC POWER SYSTEM A.12.A
HYDRAULIC COMMAND SYSTEM A.14.A
PNEUMATIC SYSTEM A.20.A
ELECTRICAL POWER SYSTEM A.30.A
LIGHTING SYSTEM A.40.A
ELECTRONIC SYSTEM A.50.A
POWER PRODUCTION B
ENGINE B.10.A
FUEL AND INJECTION SYSTEM B.20.A
AIR INTAKE SYSTEM B.30.A
EXHAUST SYSTEM B.40.A
ENGINE COOLANT SYSTEM B.50.A
LUBRICATION SYSTEM B.60.A
STARTING SYSTEM B.80.A
POWER TRAIN C
POWER COUPLING Fixed coupling C.10.B
TRANSMISSION Mechanical C.20.B
TRANSMISSION Hydrostatic C.20.F
PROCESS DRIVE Primary process drive C.50.B
TRAVELLING D
FRONT AXLE D.10.A
REAR AXLE D.12.A
2WD-4WD SYSTEM Hydrostatic D.14.E
STEERING Hydraulic D.20.C
SERVICE BRAKE Hydraulic D.30.C
2 4/7/2006
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PARKING BRAKE Hydraulic D.32.C
BODY AND STRUCTURE E
SHIELD E.20.A
OPERATOR AND SERVICE PLATFORM E.30.A
USER CONTROLS AND SEAT E.32.A
USER CONTROLS AND SEAT Operator seat E.32.C
USER PLATFORM E.34.A
ENVIRONMENT CONTROL Heating system E.40.B
ENVIRONMENT CONTROL Air-conditioning system E.40.C
ENVIRONMENT CONTROL Heating, ventilation and air-conditioning E.40.D
SAFETY SECURITY ACCESSORIES Safety E.50.B
TOOL POSITIONING G
LIFTING G.10.A
LEVELLING G.30.A
CROP PROCESSING K
FEEDING Reel feeding K.25.B
FEEDING Header feeding K.25.D
FEEDING Feeder housing K.25.E
THRESHING Conventional threshing K.40.B
SEPARATING Beating K.42.B
SEPARATING Rotary separator K.42.C
SEPARATING Straw walker K.42.E
SEPARATING Straw flow beater K.42.F
STORING AND HANDLING Grain storing K.60.B
CLEANING Primary cleaning K.62.B
CLEANING Tailings return system K.62.C
RESIDUE HANDLING Straw chopper K.64.C
RESIDUE HANDLING Spreader K.64.D
RESIDUE HANDLING Chaff blower K.64.F
2 4/7/2006
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UNLOADING Grain unloading K.72.B
2 4/7/2006
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INTRODUCTION
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Contents
INTRODUCTION
Foreword(-A.10.A.40) 3
Basic instructions ( - A.90.A.05) 4
Torque ( - A.90.A.10) 7
Conversion factors ( - A.92.A.21) 10
Product identification ( - A.80.A.10) 11
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INTRODUCTION
Foreword ( - A.10.A.40)
IMPORTANT INFORMATION
All repair and maintenance works listed in this manual must be carried out only by staff belonging to the NEW HOL-
LAND Service network, strictly complying with the instructions given and using, whenever required, the special tools.
Anyone who carries out the above operations without complying with the prescriptions shall be responsible for the
subsequent damages.
The manufacturer and all the organizations of its distribution chain, including - without limitation - national, regional or
local dealers, reject any responsibility for damages due to the anomalous behavior of parts and/or components not
approved by the manufacturer himself, including those used for the servicing or repair of the product manufactured
or marketed by the Manufacturer. In any case, no warranty is given or attributed on the product manufactured or
marketed by the Manufacturer in case of damages due to an anomalous behavior of parts and/or components not
approved by the Manufacturer.
No reproduction, though partial of text and illustrations allowed
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INTRODUCTION
Basic instructions ( - A.90.A.05)
SHIMMING
For each adjustment operation, select adjusting shims and measure individually using a micrometer, then add up
the recorded values. Do not rely on measuring the entire shimming set, which may be incorrect, or the rated value
indicated on each shim.
ROTATING SHAFT SEALS
For correct rotating shaft seal installation, proceed as follows:
•before assembly, allow the seal to soak in the oil it will be sealing for at least thirty minutes
•thoroughly clean the shaft and check that the working surface on the shaft is not damaged
•position the sealing lip facing the fluid; with hydrodynamic lips, take into consideration the shaft rotation direction
and position the grooves so that they will deviate the fluid towards the inner side of the seal
•coat the sealing lip with a thin layer of lubricant (use oil rather than grease) and fill the gap between the sealing
lip and the dust lip on double lip seals with grease
•insertthesealinitsseatandpressdownusingaflat punch, do not tap the seal with a hammer or mallet
•whilst inserting the seal, check that it is perpendicular to the seat; once settled, make sure that it makes contact
with the thrust element, if required
•to prevent damaging the seal lip on the shaft, position a protective guard during installation operations
O-RING SEALS
Lubricate the O-RING seals before inserting them in the seats, this will prevent them from overturning and twisting,
which would jeopardise sealing efficiency.
SEALING COMPOUNDS
Apply one of the following sealing compounds on the mating surfaces marked with an X: RTV SILMATE,
RHODORSIL CAF 1 or LOCTITE PLASTIC GASKET. Before applying the sealing compound, prepare the surfaces
as follows:
•remove any incrustations using a metal brush;
•thoroughly de-grease the surfaces using one of the following cleaning agents: trichlorethylene, petrol or a water
and soda solution.
COTTER PINS
When fitting split cotter pins, ensure that the pin notch is positioned in the direction of the force required to stress the
pin. Spiral cotter pins do not require special positioning.
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INTRODUCTION
PROTECTING THE ELECTRONIC/ ELECTRICAL SYSTEMS DURING CHARGING OR WELD-
ING
To avoid damage to the electronic/electrical systems, always observe the following:
1. Never make or break any of the charging circuit connections, including the battery connections, when the engine
is running.
2. Never short any of the charging components to ground.
3. Always disconnect the ground cable from the battery before arc welding on the combine or on any header at-
tached to the combine.
•Position the welder ground clamp as close to the welding area as possible.
•If welding in close proximity to a computer module, then the module should be removed from the combine.
•Never allow welding cables to lay on, near or across any electrical wiring or electronic component while
welding is in progress.
4. Always disconnect the negative cable from the battery when charging the battery in the combine with a battery
charger.
IMPORTANT: If welding must be performed on the unit, either the combine or the header (if it is attached), the battery
ground cable must be disconnected from the combine battery. The electronic monitoring system and charging system
will be damaged if this is not done.
Remove the battery ground cable. Reconnect the cable when welding is completed.
WARNING
Battery acid causes severe burns. Batteries contain sulfuric acid. Avoid contact with skin, eyes or clothing.
Antidote - EXTERNAL: flush with water. INTERNAL: drink large quantities of water or milk. Follow with milk
of magnesia, beaten egg or vegetables oil. Call physician immediately. EYES: flush with water for 15 minutes
and get prompt medical attention. 84-110
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INTRODUCTION
SPARE PARTS
Only use original NEW HOLLAND spare parts bearing the logo shown below.
geninfo_03 1
Only genuine spare parts guarantee the same quality, duration and safety as original parts, as they are the same
parts that are assembled during standard production. Only NEW HOLLAND genuine spare parts can offer this
guarantee. When ordering spare parts, always provide the following information:
•Machine model (commercial name) and serial number
•part number of the ordered part, which can be found in the "Microfiches" or the "Spare Parts Catalogue", used
for order processing
TOOLS
The tools that NEW HOLLAND suggests and illustrate in this manual have been:
•specifically researched and designed for use with NEW HOLLAND machines
•essential for reliable repair operations
•accurately built and rigorously tested so as to offer efficient and long-lasting operation
By using these tools, Repair Personnel will benefitfrom:
•operating in optimal technical conditions
•obtaining the best results
•saving time and effort
•working in safe conditions
NOTE: Wear limit values indicated for certain parts should be considered to be recommended, but not binding. The
terms "front", "rear", "right-hand" and "left-hand" (when referred to different parts) are determined from the rear, facing
in the direction of travel of the machine during operation.
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INTRODUCTION
Torque ( - A.90.A.10)
Minimum hardware tightening torques Nm lb ft lb in for normal assembly applications un-
less otherwise stated
IMPORTANT: Shown below is the suggested initial torque tightening sequences for general applications, tighten in
sequence from item 1 through to the last item of the hardware.
df5019-1 1
Imperial hardware
Nominal
Size
SAE
GRADE 2
Unplated
or Silver
plated
SAE
GRADE
2plated
w/ZnCr
GOLD
SAE
GRADE 5
Unplated
or Silver
plated
SAE
GRADE
5plated
w/ZnCr
GOLD
SAE
GRADE
8Unplated
or Silver
plated
SAE
GRADE
8plated
w/ZnCr
GOLD
LOCK-
NUTS
GR.B
w/GR5
BOLT
LOCK-
NUTS
GR.B
w/GR8
BOLT
1/4 6.2 Nm
55 lb in
8.1 Nm
72 lb in
9.7 Nm
86 lb in
13 Nm
112 lb in
14 Nm
121 lb in
18 Nm
157 lb in
6.9 Nm
61 lb in
9.8 Nm
86 lb in
5/16 13 Nm
115 lb in
17 Nm
149 lb in
20 Nm
178 lb in
26 Nm
229 lb in
28 Nm
250 lb in
37 Nm
324 lb in
14 Nm
125 lb in
20 Nm
176 lb in
3/8 23 Nm
17 lb ft
30 Nm
22 lb ft
35 Nm
26 lb ft
46 Nm
34 lb ft
50 Nm
37 lb ft
65 Nm
48 lb ft
26 Nm
19 lb ft
35 Nm
26 lb ft
7/16 37 Nm
27 lb ft
47 Nm
35 lb ft
57 Nm
42 lb ft
73 Nm
54 lb ft
80 Nm
59 lb ft
104 Nm
77 lb ft
41 Nm
30 lb ft
57 Nm
42 lb ft
1/2 27 Nm
42 lb ft
73 Nm
54 lb ft
87 Nm
64 lb ft
113 Nm
83 lb ft
123 Nm
91 lb ft
159 Nm
117 lb ft
61 Nm
45 lb ft
88 Nm
64 lb ft
9/16 81 Nm
60 lb ft
104 Nm
77 lb ft
125 Nm
92 lb ft
163 Nm
120 lb ft
176 Nm
130 lb ft
229 Nm
169 lb ft
88 Nm
65 lb ft
125 Nm
92 lb ft
5/8 112 Nm
83 lb ft
145 Nm
107 lb ft
174 Nm
128 lb ft
224 Nm
165 lb ft
244 Nm
180 lb ft
316 Nm
233 lb ft
122 Nm
90 lb ft
172 Nm
127 lb ft
3/4 198 Nm
146 lb ft
256 Nm
189 lb ft
306 Nm
226 lb ft
397 Nm
293 lb ft
432 Nm
319 lb ft
560 Nm
413 lb ft
217 Nm
160 lb ft
305 Nm
226 lb ft
7/8 193 Nm
142 lb ft
248 Nm
183 lb ft
495 Nm
365 lb ft
641 Nm
473 lb ft
698 Nm
515 lb ft
904 Nm
667 lb ft
350 Nm
258 lb ft
494 Nm
364 lb ft
1.0 289 Nm
213 lb ft
373 Nm
275 lb ft
742 Nm
547 lb ft
960 Nm
708 lb ft
1048 Nm
773 lb ft
1356 Nm
1000 lb ft
523 Nm
386 lb ft
739 Nm
545 lb ft
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INTRODUCTION
Metric hardware
Nominal
Size
CLASS 5.8
UNPLATED
CLASS 5.8
UNPLATED
CLASS 8.8
UNPLATED
CLASS 8.8
UNPLATED
CLASS 10.9
UNPLATED
CLASS 10.9
UNPLATED
LOCKNUT
CL.8
w/CL8.8
BOLT
M4 1.7 Nm
15 lb in
2.2 Nm
19 lb in
2.6 Nm
23 lb in
3.4 Nm
30 lb in
3.7 Nm
33 lb in
4.8 Nm
42 lb in
1.8 Nm
16 lb in
M6 5.8 Nm
51 lb in
7.6 Nm
67 lb in
8.9 Nm
79 lb in
12 Nm
102 lb in
13 Nm
115 lb in
17 Nm
150 lb in
6.3 Nm
56 lb in
M8 14 Nm
124 lb in
18 Nm
159 lb in
22 Nm
195 lb in
28 Nm
248 lb in
31 Nm
274 lb in
40 Nm
354 lb in
15 Nm
133 lb in
M10 28 Nm
21 lb ft
36 Nm
27 lb ft
43 Nm
32 lb ft
56 Nm
41 lb ft
61 Nm
45 lb ft
79 Nm
58 lb ft
30 Nm
22 lb ft
M12 49 Nm
36 lb ft
63 Nm
46 lb ft
75 Nm
55 lb ft
97 Nm
72 lb ft
107 Nm
79 lb ft
138 Nm
102 lb ft
53 Nm
39 lb ft
M16 121 Nm
89 lb ft
158 Nm
117 lb ft
186 Nm
137 lb ft
240 Nm
177 lb ft
266 Nm
196 lb ft
344 Nm
254 lb ft
131 Nm
97 lb ft
M20 237 Nm
175 lb ft
307 Nm
107 lb ft
375 Nm
277 lb ft
485 Nm
358 lb ft
519 Nm
383 lb ft
671 Nm
495 lb ft
265 Nm
195 lb ft
M24 411 Nm
303 lb ft
531 Nm
392 lb ft
648 Nm
478 lb ft
839 Nm
619 lb ft
897 Nm
662 lb ft
1160 Nm
855 lb ft
458 Nm
338 lb ft
5057 2
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INTRODUCTION
dave5019 3
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INTRODUCTION
Conversion factors ( - A.92.A.21)
Linear
1mm =0.03937 in 1 in =25.4 mm
1Km =0.6214 miles 1 mile =1.6093 km
1m =3.281 ft 1 ft =0.3048 m
Area
1ha =2.471 acre 1 acre =0.4047 ha
Volume
1litre =0.0063 barrel 1 barrel =158.987 litre
1litre =0.028 US bushel 1 US bushel =35.2391 litre
1litre =0.2642 US gal 1 US gal =3.7853 litre
1litre =1.057 US quart 1 US quart =0.9464 litre
1mm3 =0.061 in3 1 in3 =16387 mm3
Weight
1kg =2.204 pound 1 pound =0.4536 kg
Torque
1Nm =0.7376 lbf.ft 1 lbf.ft =1.3558 Nm
Power
1kW =1.358 hp 1 hp =0.746 kW
Pressure
1bar =14.505 lbf/in2(psi) 1 lbf/in2(psi) =0.06894 bar
1kPa =0.145 lbf/in2(psi) 1 lbf/in2(psi) =6.894 kPa
1pa =10-5 bar 1 bar =100 kPa
Temperature
1°C =((1.8 x ° C) + 32) °F 1 °F =(0.56 x (° F - 32)) °F
Flow
1L/min =0.2642 US gpm 1 US gpm =3.7853 L/min
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INTRODUCTION
Product identification ( - A.80.A.10)
EXPLANATION OF MACHINE SERIAL NUMBERS
Example : n° 221226001
221226001: The first two digits identify the model within a product line:
CX720 = 20
CX740 = 21
CX760 = 22
CX780 = 23
CX820 = 33
CX840 = 30
CX860 = 31
CX880 = 32
221226001: The third digit indicates the product line. There are 5 product lines in Zedelgem:
CX Combine harvesters: 1
TC/L Combine harvesters: 2
Combine headers: 3
Balers: 4
Forage Harvesters: 5
221226001: These 3 digits indicate the batch in which the machine was made.
221226001: Product line number (1) and batch together form the series number (1226).
221226001: The last 3 digits are a sequential number for each model within a batch.
Summarizing we can say that this machine is the first CX760 of serie 1226.
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INTRODUCTION
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REPAIR MANUAL
DISTRIBUTION SYSTEMS
CX720 , CX740 , CX760 , CX780 , CX820 , CX840 , CX860 , CX880
2 4/7/2006
A

Contents
DISTRIBUTION SYSTEMS - A
PRIMARY HYDRAULIC POWER SYSTEM
CX720 , CX740 , CX760 , CX780 , CX820 , CX840 , CX860 , CX880
A.10.A
SECONDARY HYDRAULIC POWER SYSTEM
CX720 , CX740 , CX760 , CX780 , CX820 , CX840 , CX860 , CX880
A.12.A
HYDRAULIC COMMAND SYSTEM
CX720,CX740,C
X760 , CX780 , CX820 , CX840 , CX860 , CX880
A.14.A
PNEUMATIC SYSTEM
CX720 , CX740 , CX760 , CX780 , CX820 , CX840 , CX860 , CX880
A.20.A
ELECTRICAL POWER SYSTEM
CX720 , CX740 , CX760 , CX780 , CX820 , CX840 , CX860 , CX880
A.30.A
LIGHTING SYSTEM
CX720,CX740,C
X760 , CX780 , CX820 , CX840 , CX860 , CX880
A.40.A
ELECTRONIC SYSTEM
CX720 , CX740 , CX760 , CX780 , CX820 , CX840 , CX860 , CX880
A.50.A
2 4/7/2006
A