New Holland CX720 Operating instructions

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

REPAIR MANUAL
CX720 , CX740 , CX760 , CX780 , CX820 , CX840 , CX860 , CX880
2 4/7/2006

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
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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
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UNLOADING Grain unloading K.72.B
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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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