New Holland T7030 Service Manual
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New Holland T7030 Service Manual

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SERVICE MANUAL
T7030 / T7040 / T7050 / T7060
Tractor
Part number 87628084BNA
English
December 2010
Replaces part number 87628084

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Summary of Contents for New Holland T7030

  • Page 1 SERVICE MANUAL T7030 / T7040 / T7050 / T7060 Tractor Part number 87628084BNA English December 2010 Replaces part number 87628084...
  • Page 2 SERVICE MANUAL T7030 T7040 T7050 T7060 87628084B 12/06/2009 Find manuals at https://best-manuals.com Find manuals at https://best-manuals.com...
  • Page 3 Contents INTRODUCTION DISTRIBUTION SYSTEMS............. A PRIMARY HYDRAULIC POWER SYSTEM ..........A.10.A PRIMARY HYDRAULIC POWER SYSTEM Closed center mechanical remote valve .
  • Page 4 FRONT AXLE ................D.10.A REAR AXLE .
  • Page 5 87628084B 12/06/2009 Find manuals at https://best-manuals.com Find manuals at https://best-manuals.com...
  • Page 6 INTRODUCTION 87628084B 12/06/2009 Find manuals at https://best-manuals.com Find manuals at https://best-manuals.com...
  • Page 7 Contents INTRODUCTION Safety rules ..................3 87628084B 12/06/2009 Find manuals at https://best-manuals.com Find manuals at https://best-manuals.com...
  • Page 8 INTRODUCTION Safety rules IMPORTANT NOTICE All maintenance and repair operations described in this manual should be carried out exclusively by authorised work- shops. All instructions should be carefully observed and special equipment where indicated should be used. Anyone who carries out service operations described without carefully observing these instructions will be directly responsible for any damage caused.
  • Page 9 INTRODUCTION Do not wear rings, wristwatches, jewels, unbuttoned or flapping clothing such as ties, torn clothes, scarves, open • jackets or shirts with open zips which could get caught on moving parts. Use approved safety clothing such as anti-slipping footwear, gloves, safety goggles, helmets, etc. Wear safety glasses with side guards when cleaning parts using compressed air.
  • Page 10 INTRODUCTION charging, leave the battery compartment uncovered to improve ventilation. Avoid sparks or flames near the battery area. Do no smoke. Do not charge batteries in confined spaces. • Always disconnect the batteries before performing any type of service on the electrical system. •...

  • Page 11: Table Of Contents

    INTRODUCTION FUELS - see Fire, Legal Aspects, Chemicals - General, Solvents....GAS CYLINDERS - see Fire......... . GENERAL WORKSHOP TOOLS AND EQUIPMENT.
  • Page 12 INTRODUCTION Skin and eye contact should be avoided and the manufacturers instructions followed. Cyanoacrylate adhesives (super-glues) must not contact the skin or eyes. If skin or eye tissue is bonded cover with a clean moist pad and get medical attention. do not attempt to pull tissue apart. Use in well ventilated areas as vapours can cause irritation of the nose and eyes.
  • Page 13 INTRODUCTION Do organise work practices and protective clothing to avoid soiling of the skin and eyes; breathing vapours/aerosols/ dusts/fumes; inadequate container labelling; fire and explosion hazards. Do wash before job breaks; before eating, smoking, drinking or using toilet facilities when handling chemical materials. Do keep work areas clean, uncluttered and free of spills.
  • Page 14 INTRODUCTION Ensure that the cables of mobile electrical equipment cannot get trapped and damaged, such as in a vehicle hoist. Use air operated mobile equipment where possible in preference to electrical equipment. In cases of electrocution:- switch off electricity before approaching victim •...

  • Page 15: Fuels - See Fire, Legal Aspects, Chemicals - General, Solvents

    INTRODUCTION Individuals with chronic respiratory diseases, asthma, bronchial medical problems or histories of allergic diseases should not work with or near uncured materials. The components, vapours, spray mists can cause direct irritation, sensitivity reactions and may be toxic or harmful. Vapours and spray mists must not be breathed.

  • Page 16: General Workshop Tools And Equipment

    INTRODUCTION Gases see Gas Cylinders. Gas Shielded Welding see Welding. Gas Welding see Welding. GENERAL WORKSHOP TOOLS AND EQUIPMENT It is essential that all tools and equipment are maintained in good condition and the correct safety equipment used where required. Never use tools or equipment for any purpose other than that for which they were designed.

  • Page 17: Paints - See Solvents And Chemical Materials - General

    INTRODUCTION PAINTS see Solvents and Chemical Materials - General. Highly Flammable, Flammable. One Pack. Can contain harmful or toxic pigments, driers and other components as well as solvents. Spraying should only be carried out with adequate ventilation. Two Pack. Can also contain harmful and toxic unreacted resins and resin hardening agents. The manufacturers instructions should be followed and the section of page 5 on resin based adhesives, isocyanate containing Adhesives and Foams should be consulted.

  • Page 18: Suspended Loads

    INTRODUCTION Avoid splashes to the skin, eyes and clothing. Wear protective gloves, goggles and clothing if necessary. Ensure good ventilation when in use, avoid breathing fumes, vapours and spray mists and keep containers tightly sealed. Do not use in confined spaces. When the spraying material contains solvents, e.g.
  • Page 19 INTRODUCTION SPECIAL PRECAUTIONS MUST BE TAKEN BEFORE ANY WELDING OR CUTTING TAKES PLACE ON VESSELS WHICH HAVE CONTAINED COMBUSTIBLE MATERIALS, E.G. BOILING OR STEAMING OUT OF FUEL TANKS. White Spirit see Solvents. ECOLOGY AND THE ENVIRONMENT Soil, air and water are vital factors of agriculture and life in general. Where legislation does not yet rule the treatment of some of the substances which are required by advanced technology, common sense should govern the use and disposal of products of a chemical and petrochemical nature.
  • Page 20 SERVICE MANUAL DISTRIBUTION SYSTEMS T7030 T7040 T7050 T7060 87628084B 12/06/2009...
  • Page 21 PRIMARY HYDRAULIC POWER SYSTEM ..........A.10.A T7030 , T7040 , T7050 , T7060 PRIMARY HYDRAULIC POWER SYSTEM Closed center mechanical remote valve .
  • Page 22 DISTRIBUTION SYSTEMS - A PRIMARY HYDRAULIC POWER SYSTEM - 10.A T7030 T7040 T7050 T7060 87628084B 12/06/2009 A.10.A / 1...
  • Page 23 Contents DISTRIBUTION SYSTEMS - A PRIMARY HYDRAULIC POWER SYSTEM - 10.A TECHNICAL DATA PRIMARY HYDRAULIC POWER SYSTEM Special tools ................4 Power beyond Torque .
  • Page 24 Variable displacement pump - Assemble ........... . . 59 Variable displacement pump - Install .
  • Page 25 DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM PRIMARY HYDRAULIC POWER SYSTEM - Special tools DESCRIPTION PART NUMBER Tee adaptor 11/16 ORFS female x 11/16 ORFS male x 297600* 7/16 UNF female Tee adaptor 7/16 JIC female x 7/16 JIC male x 7/16 UNF 297601* female Adaptor M10 banjo x 7/16 UNF female...
  • Page 26 DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM Power beyond - Torque BAIL06CCM056ASA Power Beyond Torque Sequence BAIL06CCM180ASA Power Beyond Coupler Torques Refer to : Power beyond - Install (A.10.A) 87628084B 12/06/2009 A.10.A / 5...
  • Page 27 DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM Hydraulic pump Variable displacement pump - General specification Load Sensed Variable Displacement Piston Pump ( 120/150 Ltr/Min) Type Variable Flow Piston Pump (Swash Plate Controlled) Rotation Clockwise Pump Speed@ 2200 erpm 2662 rpm Output @ 2200 erpm Standard Flow 120 Ltr/min...
  • Page 28 DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM Hydraulic pump Variable displacement pump - Torque BAIL06CCM041GSA 87628084B 12/06/2009 A.10.A / 7...
  • Page 29 DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM Charge pump - General specification Charge Pump ( 106 Ltr/Min ) Type Gear Type Pump Charge Pressure Filter Dump Valve Crack open @ 6.9 bar ( 100 lbf/in2) Fully Open @ 12.4 bar ( 180 lbf/in2) Charge Pressure Minimum 1.6 - 3.4 bar ( 23 - 50 lbf/in2)
  • Page 30 DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM PRIMARY HYDRAULIC POWER SYSTEM - Static description The hydraulic system comprises the following oil circuits:- High pressure circuit Hydraulic rear powerlift Remote valves Trailer brake system (where fitted) Front axle suspension (where fitted) Oil circuit of the steering hydraulics Steering pump and steering cylinder Control valve of the Fast Steer (where fitted)
  • Page 31 DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM CCLS axial piston variable displacement pump (1). Figure 1 2 BAIL06CCM104ASA BAIL08CVT085ASA The high-pressure hydraulic pumps in the Load Sensing version with closed circuit can be differentiated by the serial numbers on the plate above the pump:- Figure 3 shows the rating plate of the 150 l/min (39.6 US gpm) pump.
  • Page 32 DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM BAIL06CCM083ASA 87628084B 12/06/2009 A.10.A / 11...
  • Page 33 DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM Closed Centre remote valves and electronic powerlift control (1). BAIL06CCM057ASA Operating the electronic powerlift control In tractors that are equipped with an electronic hydraulic powerlift control, all controls for the hydraulics are gathered together on one operating panel.
  • Page 34 DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM BRL6333B 87628084B 12/06/2009 A.10.A / 13...
  • Page 35 DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM The Raise and Lower functions of the powerlift with EPC can be actuated via the transmission lever.. BAIL06CCM154ASA BAIL09CCM066AVA The tractors can also be fitted with electrohydraulic remote valves (1). BAIL06CCM085ASA 87628084B 12/06/2009 A.10.A / 14...
  • Page 36 DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM Another optional version is mechanically-operated remote valves with adjustable locking (2) and flow rate regulators (1). BAIL06CCM086ASA For implements that require a continual oil flow from the tractor's hydraulic system, the connection of a Power-beyond valve segment on the control unit block is provided with oil couplings (1), (2) and (3).
  • Page 37 DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM HIGH PRESSURE HYDRAULIC SYSTEM IN LOAD SENSING VERSION WITH CLOSED CIR- CUIT BAIL06CCM010GSA 1 Electrohydraulic remote valves 2 EPC control valve 3 Return pipe to the oil reservoir 4 Low pressure oil supply 5 To the lifting cylinders 6 Pump flow to electrohydr.
  • Page 38 DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM to open-circuit systems, in which a higher oil volume flow, which is often clearly above the required amount, is contin- ually pumped around the hydraulic system. BAIL06CCM011GSA 2 Low pressure oil supply 1 EPC control valve 3 Return pipe to the oil reservoir 4 Flow control valve 5 Oil pressure of the steering hydraulics oil pump...
  • Page 39 DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM The high-pressure circuit illustrated in PRIMARY HYDRAULIC POWER SYSTEM - Hydraulic schema (A.10.A) com- prises the following components: Hydraulic pump unit The Load Sensing valve with pressure and oil flow control valves, oil pump and priority valve for the steering hydraulics, intake filter and main oil filter as well as various electrical switches are integrated in the high-pressure variable dis- placement pump.
  • Page 40 DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM Priority valve The priority valve (1) on the top of the main oil pump channels high-pressure oil to the control block and to the trailer brake valve (where fitted). It also supplies the low-pressure control valve with low-pressure oil. If a front axle suspen- sion is installed, a levelling valve (2) is mounted on the priority valve, which delivers an oil flow to the control valve for the suspension (Figure 28) and to the cylinder.
  • Page 41 DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM Control valve of the Fast Steer (where fitted) The Fast Steer , which is available as an optional extra, supplies increased responsiveness from the steering, when needed, e. g. during front loader operations. From the straight ahead position, Fast Steer, will provide full right or left-hand steering lock with a 8 °...
  • Page 42 DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM The EPC control valve (1) is constructed as a subplate valve and is to be found together with the remote valves at the rear under the driver's cab; the safety valve of the lift cylinder is integrated into it. The lifting cylinder safety valve protects the lifting cylinder from peaks in pressure and limits the pressure in the cylinder to 230 bar (3335.0 psi).
  • Page 43 DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM BSD2169A Control valve for the front axle suspension This is on the left-hand side of the tractor and is fastened to the suspension cylinder. The suspension control valve receives high-pressure oil via the pressure reducer priority valve and the levelling valve. With the help of electronically controlled PWM solenoid valves (1), it controls the oil flow to a working cylinder, which is mounted between the front axle and front axle bearing block.
  • Page 44 DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM BAIL06CCM090ASA Side-mounted remote valves As an optional extra, other remote valves can be mounted under the driver's cab. They are installed via T-shaped threaded connections in the high-pressure oil line from the CCLS behind the trailer brake valve and are actuated via a crossgate lever control in the driver's cab.
  • Page 45 DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM 1. Vacuum switch of the inlet filter 2. Oil temperature switch 3. Pressure switch of the feed pressure telltale Control pump Depending on whether the tractor is fitted with the SuperSteer front axle or not, two different control pumps are in- stalled.
  • Page 46 DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM The Closed Centre high-pressure oil circuit works in the following way:- The components of the high pressure oil circuit are connected via Load Sensing lines with the hydraulic Load Sensing valve, which controls the capacity of the hydraulic pump. If the trailer brake system, the remote valves, the hydraulic powerlift or the front axle suspension (where fitted) are operated, the Load Sensing valve of the variable displacement pump compares the pressure in the Load Sensing line of the components with the delivery pressure of the hydraulic pump.
  • Page 47 DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM PRIMARY HYDRAULIC POWER SYSTEM - Static description Pressure test kit 297611 has been developed for pressure testing and contains adaptors specifically designed for access to test ports. Refer to PRIMARY HYDRAULIC POWER SYSTEM - Pressure test (A.10.A) which describes the procedure for per- forming the following pressure tests using this kit and other standard fittings already available through CNH Logistics.
  • Page 48 DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM 87628084B 12/06/2009 A.10.A / 27...
  • Page 49 DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM PRIMARY HYDRAULIC POWER SYSTEM - Hydraulic schema With Italian Trailer Brakes 1.Steering Motor (For Fast Steer Schematic refer to : 2.Front Lift Cylinders Fast steer system - Hydraulic schema (D.20.C) 3.Oil Cooler 4.Front Lift Valve 5.Accumulator 6.Transmission Control Valve Assembly 7.Mid Mount Remote Valves...
  • Page 50 DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM BAIL07CCM269JSA 87628084B 12/06/2009 A.10.A / 29...
  • Page 51 DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM With Universal Trailer Brakes 1.Steering Motor (For Fast Steer Schematic refer to : Fast 2.Front Lift Cylinders steer system - Hydraulic schema (D.20.C) 3.Oil Cooler 4.Front Lift Valve 5.Accumulator 6.Transmission Control Valve Assembly 7.Mid Mount Remote Valves 8.Variable Displacement Pump 9.Pressure Reducing Priority Valve...
  • Page 52 DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM BAIL07CCM299JSA 87628084B 12/06/2009 A.10.A / 31...
  • Page 53 DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM 87628084B 12/06/2009 A.10.A / 32...
  • Page 54 DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM Power beyond - Static description BAIL06CCM050FSA Power Beyond Component Layout 1. Power Beyond Slice 2. Load Sensing Line 3. Pressure Feed Hose 4. Priority Valve For implements or attachments requiring a continuous oil flow from the tractor hydraulic system, provision is made to connect directly into the main hydraulic circuit at the rear of the tractor.
  • Page 55 DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM Hydraulic pump - Static description The variable flow closed centre load sensing hydraulic pump assembly is mounted on the right hand side of the rear axle centre housing and contains within its body two hydraulic pumps. A charge pump of the gear type to supply oil at a charge pressure of 3 bar ( 44 lbf/in2) to a variable flow closed •...
  • Page 56 DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM BAIL06CCM193FSA Variable Displacement Hydraulic Pump Installation 1 Trailer Brake Valve Assembly 2 Pressure Reducing Priority Valve 3 Load Levelling Valve (Where fitted) 4 Variable Displacement Pump 5 Filter Restriction Switch 6 Load Sensing Valve 7 Steering / Lube Priority Valve 8 Steering / lube Supply Pump 10 Main Intake Filter...
  • Page 57 DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM BSE3587A Charge Pump Components 1 EndPlate 2 Seal 3 Coupling 4 Shaft 5 Rotor Housing 6 Charge Pump Housing 7 Seal 8 Pin 9 Hub 10 Screw Plug 11 System Relief Valve ( 245 Bar) 12 Check Valve Plug 13 Seal 14 Charge Pressure Filter Dump Valve Spool...
  • Page 58 DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM BSE3586A Flow and Pressure Compensating Valves 1 Plug 2 Seal 3 Disc 4 Spring 5 Spring 6 Seat 7 Housing 8 Screw 9 Spool 10 Snap-ring 11 Plug 12 Plug 13 Seal 14 Seal 15 Damper Screw 16 Nozzle 17 Seat...
  • Page 59 DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM Hydraulic pump - Overview BAIL06CCM042HSA Hydraulic Pump Assembly With Variable Displacement Closed Centre Load Sensing 87628084B 12/06/2009 A.10.A / 38...
  • Page 60 DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM 1 Load Sensing Valve assembly 2 Steering Pump 3 Supplementary Lube valve 4 Main Intake Filter restriction (vacuum) Switch 5 Main Filter 6 Low Oil Temperature Switch 7 Variable Displacement Pump and Charge Pump 8 Charge Pump Filter 9 Low Charge Pressure Warning Switch 10 Main System Relief Valve ( 245 bar)
  • Page 61 DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM Charge pump - Exploded view BSE3587A_457 Charge Pump Components 1 End Plate 2 Seal 3 Coupling 4 Shaft 5 Rotor Housing 6 Charge Pump Housing 8 Pin 7 Seal 9 Hub 10 Screw Plug 11 System Relief Valve ( 245 bar (3552.5 psi)) 12 Check Valve Plug 13 Seal...
  • Page 62 DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM Compensator - Exploded view BSD2030A_184 Flow and Pressure Compensating Valves 1 Housing 2 Seat 3 Adjuster and ‘O‘ Ring seal 4 Locknut 5 Spring 6 Spring 7 Locknut 8 Adjuster and ‘O‘ Ring seal 9 Seat 10 Spring 11 Seat...
  • Page 63 DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM Signal valve - Pressure test IMPORTANT: Before a pressure test or volume flow measurement, drive the tractor until the transmission oil in the rear axle is warmed up to operating temperature. 65 °C ( 145 °F). This test shows how you test whether the control lines for the displacement volume regulation of the hydraulic pump are working.
  • Page 64 DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM BAIL09CCM090AVB 87628084B 12/06/2009 A.10.A / 43...
  • Page 65 DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM Power beyond - Remove Undo the three retaining nuts (1) . BAIL06CCM051ASA Undo the load sensing connection (1), and remove power beyond slice (2). BAIL06CCM242ASA Next operation: Power beyond - Install (A.10.A) 87628084B 12/06/2009 A.10.A / 44...
  • Page 66 DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM Power beyond - Install Prior operation: Power beyond - Remove (A.10.A) Locate the power beyond slice (2) onto the three tie rods protruding from the remote valve and connect the load sensing hose (1). BAIL06CCM242ASA Replace the retaining nuts (1) and torque in the sequence as specified.
  • Page 67 DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM Power beyond - Assemble BAIL06CCM170FSA Power Beyond Slice Components 1. Load Sensing Coupler 2. Power Beyond Manifold 3. Load Sensing Shuttle Valve 4. Spring 5. Support Ring 6. ’O’ Ring 7. Return Coupler 8.
  • Page 68 DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM Hydraulic pump - Pressure test IMPORTANT: Before a pressure test or volume flow measurement, drive the tractor until the transmission oil in the rear axle is warmed up to operating temperature. 65 °C ( 145 °F). Low pressure standby The following tests constitute a function test of the hydraulic pump and the connected high pressure oil...
  • Page 69 DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM If the display value deviates slightly from the desired value, adjust the flow control valve. If the display value is too high, check whether the control pin of the flow control valve is sticking. NOTE: A full turn changes the pressure by about 16 bar ( 232 lbf.in2).
  • Page 70 DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM If the display value does not match the desired value, adjust the flow control valve. NOTE: A full turn changes the pressure by about 50 bar ( 725 lbf.in2). BAIS06CCM101AVC 87628084B 12/06/2009 A.10.A / 49...
  • Page 71 DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM Hydraulic pump Variable displacement pump - Remove Raise the rear of the tractor and place two suitable axle stands (1) under the final drive cases. NOTE: If required, detach the lift rods from the lower links. BTB0281A Using a suitable sling (1), connect the rear right- hand wheel to a hoist and remove the rear right-hand...
  • Page 72 DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM Remove the return filter element (1) and the pressure filter cartridge (2). BAIS06CCM055AVA Disconnect the transmission control cover return hose (1), steering pump return hose (2) and the mid mount valves return hose (3). BAIS06CCM056AVA Disconnect the electrical connectors (1) and (2).
  • Page 73 DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM Remove the transmission/hydraulic return filter hous- ing. BAIS06CCM058AVA Disconnect the load sensing line (1), trailer brake valve supply pipe (2) and the left and right trailer brake lines (3). BAIS06CCM059AVA Disconnect the mid mount valves load sensing line (1) and supply hose (2) (If equipped).
  • Page 74 DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM Remove the variable displacement hydraulic pump. WARNING The component is heavy. ALWAYS use a hoist or get assistance to lift the component. Failure to comply could result in serious injury or death. M944 BAIS06CCM061AVA Make a note of pump spacer position for correct re- assembly.
  • Page 75 DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM Next operation: Hydraulic pump Variable displacement pump - Overhaul (A.10.A). 87628084B 12/06/2009 A.10.A / 54...
  • Page 76 DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM Hydraulic pump Variable displacement pump - Overhaul This procedure describes the overhaul of the Load Sensed Variable Displacement pump assembly when removed from the tractor. Refer to Hydraulic pump Variable displacement pump - Remove (A.10.A) The following items however can be serviced with the pump installed on the tractor.
  • Page 77 DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM When replacing the input shaft seal, make sure the pump housings mounting flange is clean. Use circlip pliers to remove the input shaft seal retaining ring. 1b0o2004061061 With the retaining ring removed, use a punch or sim- ilar tool, and carefully pierce the top of the lip seal.
  • Page 78 DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM Remove preload spacer from driveshaft. Remove pumping head and piston from housing. Using a suit- able marker identify each piston and slipper to their corresponding barrel in the pumping head. TIA35167 Separate pumping head and slipper assembly and inspect for damage.
  • Page 79 DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM Next operation: Hydraulic pump Variable displacement pump - Assemble (A.10.A) 87628084B 12/06/2009 A.10.A / 58...
  • Page 80 DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM Hydraulic pump Variable displacement pump - Assemble Prior operation: Hydraulic pump Variable displacement pump - Overhaul (A.10.A) Pump Reassembly Before reassembling the load sensed variable dis- placement pump, replace all worn and damaged parts and assemblies and all seals and O rings.
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