New Holland T7.170 Service Manual
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New Holland T7.170 Service Manual

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SERVICE MANUAL
Part number 84479148A
English
October 2011
T7.170 / T7.185
T7.200 / T7.210
Tractor

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Summary of Contents for New Holland T7.170

  • Page 1 SERVICE MANUAL T7.170 / T7.185 T7.200 / T7.210 Tractor Part number 84479148A English October 2011...
  • Page 2 Contents INTRODUCTION HYDRAULIC, PNEUMATIC, ELECTRICAL, ELECTRONIC SYSTEMS A PRIMARY HYDRAULIC POWER SYSTEM ..........A.10.A PRIMARY HYDRAULIC POWER SYSTEM Closed center mechanical remote valve .
  • Page 3 2WD-4WD SYSTEM Hydraulic ............D.14.C STEERING Hydraulic.
  • Page 4 84479148A 15/09/2011 Find manuals at https://best-manuals.com...
  • Page 5 INTRODUCTION 84479148A 15/09/2011 Find manuals at https://best-manuals.com...

  • Page 6: Table Of Contents

    Contents INTRODUCTION Foreword ..................3 Foreword .
  • Page 7 INTRODUCTION Foreword 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.
  • Page 8 INTRODUCTION Foreword Technical Information This manual has been produced by a new technical information system. This new system is designed to deliver technical information electronically through Web delivery, DVD and in paper manuals. A coding system called ICE has been developed to link the technical information to other Product Support functions e.g. Warranty. Technical information is written to support the maintenance and service of the functions or systems on a customers machine.
  • Page 9 INTRODUCTION How to Use this Manual This manual is divided into Sections. Each Section is then divided into Chapters. Contents pages are included at the beginning of the manual, then inside every Section and inside every Chapter. An alphabetical Index is included at the end of a Chapter.
  • Page 10 INTRODUCTION Section Contents SECTION LETTER DESCRIPTION HYDRAULIC – This Section covers the main systems that interact with most of PNEUMATIC – the functions of the product. It includes the central parts of the ELECTRICAL – hydraulic, electrical, electronic, pneumatic, lighting and grease ELECTRONIC lubrication systems.
  • Page 11 INTRODUCTION This manual contains the following Sections: INTRODUCTION DISTRIBUTION SYSTEMS POWER PRODUCTION POWER TRAIN TRAVELLING BODY AND STRUCTURE HITCH AND WORKING TOOL Chapters Each Chapter is identified by a letter and number combination e.g. Engine B.10.A The first letter is identical to the Section letter i.e.
  • Page 12 INTRODUCTION Information Units and Information Search Each chapter is composed of information units. Each information unit has the ICE code shown in parentheses which indicates the function and the type of information written in that information unit. Each information unit has a page ref- erence within that Chapter.

  • Page 13: Foreword Ecology And The Environment

    Do not open the air-conditioning system yourself. It contains gases which should not be released into the at- • mosphere. Your NEW HOLLAND AGRICULTURE dealer or air conditioning specialist has a special extractor for this purpose and will have to recharge the system properly.

  • Page 14: Safety Rules

    INTRODUCTION Safety rules PRECAUTIONARY STATEMENTS Personal Safety This is the safety alert symbol. It is used to alert you to potential personal injury hazards. Obey all safety messages that follow this symbol to avoid possible injury or death. Throughout this manual and on machine decals, you will find the signal words DANGER, WARNING, and CAUTION followed by special instructions.
  • Page 15 INTRODUCTION ACCIDENT PREVENTION WARNING Avoid injury! Always do the following before lubricating, maintaining, or servicing the machine. 1. Disengage all drives. 2. Engage parking brake. 3. Lower all attachments to the ground, or raise and engage all safety locks. 4. Shut off engine. 5.
  • Page 16 INTRODUCTION Brakes are inoperative when manually released for repair or maintenance purposes. Use blocks or similar de- • vices to secure the machine in these conditions. Only use specified towing points for towing the machine. Connect parts carefully. Make sure that all pins and/or •...
  • Page 17 INTRODUCTION Machine start-up. Never run the engine in confined spaces that are not equipped with adequate ventilation for exhaust gas ex- • traction. Never place the head, body, limbs, feet, hands or fingers near rotating and moving parts. • Hydraulic systems and fuel injection systems A liquid leaking from a tiny hole may be almost invisible but, at the same time, be powerful enough to penetrate •...

  • Page 18: Torque

    INTRODUCTION Torque Minimum hardware tightening torques (in N m or lb in /lb ft) for normal assembly applica- tions unless otherwise stated NOTICE: Shown below is the suggested initial torque tightening sequences for general applications, tighten in se- quence from item 1 through to the last item of the hardware. The minimum hardware tightening torque on drawings, in specifications etc.
  • Page 19 INTRODUCTION ZEIL06CS0136F0A ZEIL06CS0135F0A 84479148A 15/09/2011...

  • Page 20: Basic Instructions

    INTRODUCTION Basic instructions 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.
  • Page 21 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 "CNH Original Parts" or " NEW HOLLAND AGRICULTURE Parts" can offer this guarantee. When ordering spare parts, always provide the following information: Machine model (commercial name) and serial number •...

  • Page 22: Conversion Factors

    INTRODUCTION Conversion factors Length 1 mm 0.0393 in 1 in 25.4 mm 1 km 0.621 miles 1 miles 1.609 km 3.281 ft 1 ft 0.3048 m Area 1 ha 2.471 ac 1 ac 0.404 US fl oz 1 m² 10.76 ft² 1 ft²...

  • Page 23: Consumables Lubrications And Coolants

    NOTE: In areas where prolonged periods of extreme temperatures are encountered, local lubricant practices are acceptable; such as the use of SAE 5W-30 in extreme low temperatures or SAE 50 in extreme high temperatures. The NEW HOLLAND A MULTI BIO oil is available from your authorised dealer.
  • Page 24 If you reside in a country where antifreeze is not available, use clean water premixed with 5 % chemical inhibitor. The inhibitor is available from your authorised dealer. Lubrications and Coolant Specifications INTERNATIONAL RECOMMENDED FLUIDS AND APPLICATIONS SPECIFICATION SPECIFICATION ENGINE OIL NEW HOLLAND A ™ HSP E MBRA ASTERGOLD NGINE OIL SAE 15W-40 NH 330 H API CI-4 NEW HOLLAND A ™...
  • Page 25 INTRODUCTION Regarding filling quantity - see Capacities () 84479148A 15/09/2011...

  • Page 26: Capacities

    INTRODUCTION Capacities UNIT T7.170 RC/PC T7.185 RC/PC T7.200 RC/PC T7.210 RC/PC 270 l (71.3 US gal) FUEL TANK AUXILIARY FUEL TANK 70 l (18.5 US gal) DEF/ AdBlue TANK 51 l (13.5 US gal) 26 l (6.9 US gal) COOLING SYSTEM ENGINE (including filter) 15 l (3.96 US gal)
  • Page 27 SERVICE MANUAL HYDRAULIC, PNEUMATIC, ELECTRICAL, ELECTRONIC SYSTEMS T7.170 AutoCommand , T7.170 Power Command , T7.170 Range Command , T7.185 AutoCommand , T7.185 Power Command , T7.185 Range Command , T7.200 AutoCommand , T7.200 Power Command , T7.200 Range Command , T7.210 AutoCommand , T7.210 Power Command , T7.210 Range Command...
  • Page 28 PRIMARY HYDRAULIC POWER SYSTEM ..........A.10.A T7.170 AutoCommand , T7.170 Power Command , T7.170 Range Command , T7.185 AutoCommand , T7.185 Power Command , T7.185 Range Command , T7.200 AutoCommand , T7.200 Power Command , T7.200 Range Command , T7.210 AutoCommand ,...
  • Page 29 ELECTRONIC SYSTEMS - A PRIMARY HYDRAULIC POWER SYSTEM - 10.A T7.170 AutoCommand , T7.170 Power Command , T7.170 Range Command , T7.185 AutoCommand , T7.185 Power Command , T7.185 Range Command , T7.200 AutoCommand , T7.200 Power Command , T7.200 Range Command , T7.210 AutoCommand , T7.210 Power Command , T7.210 Range Command...
  • Page 30 Static description ................6 T7.170 Range Command, T7.170 Power Command, T7.185 Range Command, T7.185 Power Command, T7.200 Range Command, T7.200 Power Command, T7.210 Range Command, T7.210 Power Command...

  • Page 31: Torque

    HYDRAULIC, PNEUMATIC, ELECTRICAL, ELECTRONIC SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM Power beyond - Torque BAIL10CVT060FAB 84479148A 15/09/2011 A.10.A / 3...

  • Page 32: Variable Displacement Pump - General Specification

    HYDRAULIC, PNEUMATIC, ELECTRICAL, ELECTRONIC SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM Hydraulic pump Variable displacement pump - General specification Variable displacement pump Type Variable Displacement Closed Centre Load Sensing Piston Pump Rotation Clockwise Pump speed @ engine speed 2400 RPM maximum rated 3000 RPM speed (Theoretical) Pump speed @ engine speed 2200 RPM...
  • Page 33 HYDRAULIC, PNEUMATIC, ELECTRICAL, ELECTRONIC SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM Charge pump - General specification Charge Pump Type Internal rotor gear pump Charge Pump displacement 74 cm³/rev Standard flow 82 cm³/rev High flow Output @ engine speed 2200 RPM Standard flow 250 l/min (66 US gpm) Output @ engine speed 2200 RPM Hi flow 250 l/min (66 US gpm)
  • Page 34 HYDRAULIC, PNEUMATIC, ELECTRICAL, ELECTRONIC SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM PRIMARY HYDRAULIC POWER SYSTEM - Static description T7.170 Range Command, T7.170 Power Command, T7.185 Range Command, T7.185 Power Command, T7.200 Range Command, T7.200 Power Command, T7.210 Range Command, T7.210 Power Command...
  • Page 35 HYDRAULIC, PNEUMATIC, ELECTRICAL, ELECTRONIC SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM Options/Configurations Electro-Hydraulic 2, 3, or 4 Electro hydraulically operated valves Remote Valves Transmission 18 X 6 40KM/H SEMIPOWERSHIFT 18 X 6 35KM/H SEMIPOWERSHIFT 19 X 6 40KM/H SEMIPOWERSHIFT 19 X 6 50KM/H SEMIPOWERSHIFT 17 X 6 30KM/H SEMIPOWERSHIFT 18 X 6 40KM/H FULLPOWERSHIFT 18 X 6 35KM/H FULLPOWERSHIFT...
  • Page 36 HYDRAULIC, PNEUMATIC, ELECTRICAL, ELECTRONIC SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM BAIL10CCM010AAB BSE2884A (1). Draft sensitivity control knob (2). Drop rate control knob (3). Height limit control knob (4). Slip limit control knob BRL6436B (1). Wheel slip control knob (2). EHR Function control knob (3).Front hitch height limit control knob (4).
  • Page 37 HYDRAULIC, PNEUMATIC, ELECTRICAL, ELECTRONIC SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM BAIL07APH331ASA (1). Stop adjuster thumbwheel (2). Position control lever (3). Draft loading wheel (4). Raise/lower switch BRK5798B The raise and lowering functions of the electronic draft control lift system can also be operated from the rear fender switches (1) and (2) BSE3774A Mechanical remote control valves (1) are also available with electronic draft control.
  • Page 38 HYDRAULIC, PNEUMATIC, ELECTRICAL, ELECTRONIC SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM BSF3967A_430 Located below the Electronic Draft Control valve (Where fitted), is the Hydraulic Power Tapping port (Power Beyond) block.This includes a priority valve and also a low pressure regulating valve (1). This block also has a flange plate which allows the addition of a trailer brake valve.
  • Page 39 HYDRAULIC, PNEUMATIC, ELECTRICAL, ELECTRONIC SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM BAIL07APH330GSA 1. High Pressure Feed to Electro-Hydraulic Valve Pilot 2. Electro-Hydraulic Remote Valves Line 3. Electronic Draft Control Valve 4. Trailer Brake Valve (Where Fitted) 5. Low Pressure Feed 6. Load Sensing Line 7.
  • Page 40 HYDRAULIC, PNEUMATIC, ELECTRICAL, ELECTRONIC SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM BAIS06CCM055AVA Two valves are located within the filter assembly cap. These are (1) the 0.8 bar (11.600 psi) supplementary lube valve and the 3 bar (43.500 psi) charge pressure bypass valve (2). BRJ5174B High Pressure Hydraulic System, Variable Displacement Pump (CCLS) - Electrical Switches Low Charge Pressure Warning Switch...
  • Page 41 HYDRAULIC, PNEUMATIC, ELECTRICAL, ELECTRONIC SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM BAIL06CCM088ASA Suspended front axle control valve (where fitted) The suspension control valve is located on the right hand side of the tractor. High pressure oil is fed from the power beyond port on the sub plate of the remote valve stack and with the use of processor controlled PWM valves controls the flow of oil to the suspension cylinder (Refer to SUSPENSION Hydraulic - Static description (D.40.C)) BAIL10CVT051AAB...
  • Page 42 HYDRAULIC, PNEUMATIC, ELECTRICAL, ELECTRONIC SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM BAIL07APH352ASA Steering Cylinders. Receives high pressure oil directly from the steering motor. BSE2868B Load Sensing Shuttle Valve. Located in each remote valve slice, the Electronic Draft Control valve and between the trailer brake valve, front sus- pension valve and mid-mounted valves, where fitted, is the load sensing shuttle valve (2) Figure 20.
  • Page 43 HYDRAULIC, PNEUMATIC, ELECTRICAL, ELECTRONIC SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM BAIL07APH326ASA Operation of the closed centre high pressure hydraulic circuit is as follows:- The components in the high pressure hydraulic circuit are connected by their load sensing lines to the hydraulic load sensing valve which controls the output of the hydraulic pump.
  • Page 44 HYDRAULIC, PNEUMATIC, ELECTRICAL, ELECTRONIC SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM Double acting convertible to single-acting. BSE3664A_442 BAIL07APH328ASA When the oil is cold and pressure differential across the oil cooler is higher than 6 bar ( 87 lbf/in2) the cooler by-pass valve (1) located in the transmission top cover will operate to ensure that adequate flow to the lubrication circuit is maintained.

  • Page 45: Static Description

    HYDRAULIC, PNEUMATIC, ELECTRICAL, ELECTRONIC SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM PRIMARY HYDRAULIC POWER SYSTEM - Static description T7.170 AutoCommand, T7.185 AutoCommand, T7.200 AutoCommand, T7.210 AutoCommand The hydraulic systems can be separated into the following circuits :- High Pressure Circuit Hydraulic Lift Assembly.
  • Page 46 HYDRAULIC, PNEUMATIC, ELECTRICAL, ELECTRONIC SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM Options/Configurations Transmission Hydraulic CVT Table BAIL10CVT067GAB Main hydraulic components 2.Hydraulic remote valves 1.Hydraulic lift cylinder 3.Electronic draft control valve 4.Distribution manifold 5.High pressure feed pipe 6.Hydrostat control valve 7.Gear pump 8.Main suction filter 9.Variable displacement pump 10.Trailer brake valve...
  • Page 47 HYDRAULIC, PNEUMATIC, ELECTRICAL, ELECTRONIC SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM BAIL10CVT037AAB The gear pump (1) Figure 3 supplies low pressure and lubrication oil. BAIL10CVT066AAB Located on the right hand side of the rear axle housing is a resounding filter assembly. BAIL10CVT039AAB The priority valve (1) located on the top of the main pump diverts high pressure oil to the steering, the trailer brake valve (where fitted) (2) and high pressure circuit.
  • Page 48 HYDRAULIC, PNEUMATIC, ELECTRICAL, ELECTRONIC SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM There are two types of remote valves available for the closed centre system. Mechanical remote valves operated via a cable from within the cab or electro hydraulically operated valves, (1) Figure 6, which are operated by electrical switches and have their own in built processor to control oil flow via a solenoid valve.
  • Page 49 HYDRAULIC, PNEUMATIC, ELECTRICAL, ELECTRONIC SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM BRL6436B (1). Wheel slip control knob (2). EHR Function control knob (3).Front hitch height limit control knob (4). Drop rate control knob (5). Draft sensitivity control knob (6). Rear hitch height limit control knob BAIL07APH331ASA (1).
  • Page 50 HYDRAULIC, PNEUMATIC, ELECTRICAL, ELECTRONIC SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM BRK5798B The raise and lowering functions of the electronic draft control lift system can also be operated from the rear fender switches (1) and (2) BSF3967A_430 Located below the Electronic Draft Control valve (Where fitted), is the Hydraulic Power Tapping port (Power Beyond) block.
  • Page 51 HYDRAULIC, PNEUMATIC, ELECTRICAL, ELECTRONIC SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM BAIL10CVT065AAB Power beyond slice with ISO standard couplers BAIL10CVT061AAB Power beyond hydraulic return port (1) The Power beyond hydraulic return port is used to reduce back pressure in the remote hydraulic return line and create more efficient motor operation.
  • Page 52 HYDRAULIC, PNEUMATIC, ELECTRICAL, ELECTRONIC SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM BAIL10CVT063FAB Front hydraulic power lift CLOSED CENTRE LOAD SENSING HIGH PRESSURE HYDRAULIC CIRCUIT The principal of operation of the closed centre load sensing high pressure hydraulic circuit with variable flow piston pump is to supply oil flow on demand.
  • Page 53 HYDRAULIC, PNEUMATIC, ELECTRICAL, ELECTRONIC SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM BAIL10CVT050AAB Two valves are located within the filter assembly cap. These are (1) the 0.8 bar (11.600 psi) supplementary lube valve and the 3 bar (43.500 psi) charge pressure bypass valve (2). BRJ5174B High Pressure Hydraulic System, Variable Displacement Pump (CCLS) - Electrical Switches Low Charge Pressure Warning Switch...
  • Page 54 HYDRAULIC, PNEUMATIC, ELECTRICAL, ELECTRONIC SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM BAIL06CCM088ASA Suspended front axle control valve (where fitted) The suspension control valve is located on the right hand side of the tractor. High pressure oil is fed from the power beyond port on the sub plate of the remote valve stack and with the use of processor controlled PWM valves controls the flow of oil to the suspension cylinder (Refer to SUSPENSION Hydraulic - Static description (D.40.C)) BAIL10CVT051AAB...
  • Page 55 HYDRAULIC, PNEUMATIC, ELECTRICAL, ELECTRONIC SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM BAIL07APH352ASA Steering Cylinders. Receives high pressure oil directly from the steering motor. BSE2868B Load Sensing Shuttle Valve. Located in each remote valve slice, the Electronic Draft Control valve and between the trailer brake valve, front sus- pension valve and mid-mounted valves, where fitted, is the load sensing shuttle valve (2) Figure 27.
  • Page 56 HYDRAULIC, PNEUMATIC, ELECTRICAL, ELECTRONIC SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM BAIL10CVT056AAB Operation of the closed centre high pressure hydraulic circuit is as follows:- The components in the high pressure hydraulic circuit are connected by their load sensing lines to the hydraulic load sensing valve which controls the output of the hydraulic pump.
  • Page 57 HYDRAULIC, PNEUMATIC, ELECTRICAL, ELECTRONIC SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM Double acting convertible to single-acting with float. Double acting convertible to single-acting. BSE3664A_442 Lubrication oil is supplied by the gear pump and is distributed via the distribution manifold (1) Figure 31 . BAIL10CVT040AAB The hydrostatic unit is located in the flywheel housing of the transmission.To maintain the temperature in the hydro- static unit at a constant level, a certain amount of oil from the closed circuit is steadily replaced with oil from the feed...
  • Page 58 HYDRAULIC, PNEUMATIC, ELECTRICAL, ELECTRONIC SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM 84479148A 15/09/2011 A.10.A / 30...

  • Page 59: Hydraulic Schema

    HYDRAULIC, PNEUMATIC, ELECTRICAL, ELECTRONIC SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM PRIMARY HYDRAULIC POWER SYSTEM - Hydraulic schema T7.170 AutoCommand, T7.185 AutoCommand, T7.200 AutoCommand, T7.210 AutoCommand 1. Mid mount remote valves 2. Front brake valve 3. CVT control manifold 4. Filter Manifold 5.
  • Page 60 HYDRAULIC, PNEUMATIC, ELECTRICAL, ELECTRONIC SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM (1)(2)(3) indicate connection locations for item (24) (When fitted) 84479148A 15/09/2011 A.10.A / 32...
  • Page 61 HYDRAULIC, PNEUMATIC, ELECTRICAL, ELECTRONIC SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM BAIL10CVT161ASC 84479148A 15/09/2011 A.10.A / 33...
  • Page 62 HYDRAULIC, PNEUMATIC, ELECTRICAL, ELECTRONIC SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM 84479148A 15/09/2011 A.10.A / 34...

  • Page 63: Power Beyond

    HYDRAULIC, PNEUMATIC, ELECTRICAL, ELECTRONIC SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM Power beyond - Exploded view BAIL10CVT059FAB 1. Pressure feed coupler 2. Power beyond manifold 3. Seals 4. Seal 5. Compression spring 6. Shuttle valve 7. Seal 8. Seal 9. Return coupler 10.
  • Page 64 HYDRAULIC, PNEUMATIC, ELECTRICAL, ELECTRONIC SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM Hydraulic pump Variable displacement pump - Dynamic description The operating principal of a variable flow piston pump is to provide oil flow on demand and minimise the engine power absorbed in driving the hydraulic pump when the hydraulic circuits do not require maximum pump flow. The variable flow piston pump in hydraulic systems therefore has distinct power loss advantages over fixed displacement gear type pumps, which continually provide oil flow and absorb engine power even when the hydraulic circuits do not require the total pump output.
  • Page 65 HYDRAULIC, PNEUMATIC, ELECTRICAL, ELECTRONIC SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM BSD2023A The nine element pumping head is cylindrical in shape and has nine barrels, into each of which, is installed a piston (7). On the end of each piston is pressed a slipper (6) which always remains in contact with the face of the swash plate (5) located at the front of the pumping head.

  • Page 66: Exploded View

    HYDRAULIC, PNEUMATIC, ELECTRICAL, ELECTRONIC SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM Compensator - Exploded view BSE3586A_454 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...
  • Page 67 HYDRAULIC, PNEUMATIC, ELECTRICAL, ELECTRONIC SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM PRIMARY HYDRAULIC POWER SYSTEM - Test Using DATAR Equipment WARNING Escaping fluid! Hydraulic fluid or diesel fuel leaking under pressure can penetrate the skin and cause infection or other injury. To prevent personal injury: Relieve all pressure before discon- necting fluid lines or performing work on the...
  • Page 68 HYDRAULIC, PNEUMATIC, ELECTRICAL, ELECTRONIC SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM Remove the cab floor inspection panel. BTB0445 Using special tool 380000573, connect into the steer- ing load sense line. Connect a DATAR pressure transducer to the DATARScope interface channel (B). BAIL10CVT613AVA Install the a DATARScope pressure transducer to the 3 bar lubrication line and connect to the...
  • Page 69 HYDRAULIC, PNEUMATIC, ELECTRICAL, ELECTRONIC SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM Connect the flow meter pressure port to the DATARScope interface channel (D) and flow meter flow port to the DATARScope interface channel (A). BAIL10CVT608AVB Using DATAR, create a test range for these channels. Collection time = 5 ms/div •...
  • Page 70 HYDRAULIC, PNEUMATIC, ELECTRICAL, ELECTRONIC SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM Turn the steering wheel quickly in the following order with a 2-3 second delay between each movement. 1/2 turn to the right. • 1/2 turn to the left. • Full left-hand lock and hold to the left. •...
  • Page 71 HYDRAULIC, PNEUMATIC, ELECTRICAL, ELECTRONIC SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM BAIL11CVT640FVA Low Pressure Circuit and Accumulator Pressure Test Using special tool 380000573 (1), connect into the low pressure line behind the valve stack. Connect a DATAR pressure transducer to the spe- cial tool and connect to the DATARScope interface channel (A).
  • Page 72 HYDRAULIC, PNEUMATIC, ELECTRICAL, ELECTRONIC SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM Remove the cab floor inspection panel. BTB0445 Install a test port into the 3 bar lubrication line and connect a DATARScope pressure transducer to the DATARScope interface channel (C). BAIL10CVT614AVA Disconnect the hydrostat electrical connector and remove the hydrostat gear pump pressure switch transducer.
  • Page 73 HYDRAULIC, PNEUMATIC, ELECTRICAL, ELECTRONIC SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM Using DATAR, create a test range for these channels. Collection time = 5 ms/div • Channel A = Low pressure line. • Setting = 40 bar Transducer setting = 60 bar Channel B = Filter pressure.
  • Page 74 HYDRAULIC, PNEUMATIC, ELECTRICAL, ELECTRONIC SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM BAIL11CVT639FVA 84479148A 15/09/2011 A.10.A / 46...
  • Page 75 HYDRAULIC, PNEUMATIC, ELECTRICAL, ELECTRONIC 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. The following items however can be serviced with the pump installed on the tractor. Blocked filter dump valve Pressure and flow compensating valves Steering flow control valve (Priority valve)
  • Page 76 HYDRAULIC, PNEUMATIC, ELECTRICAL, ELECTRONIC SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM Remove the charge pump components from main pump assembly. (1) Rotor housing (2) Rotor (3) Rotor shaft (4) End plate BAIL08CVT102ASA When replacing the input shaft seal, make sure the pump housings mounting flange is clean.
  • Page 77 HYDRAULIC, PNEUMATIC, ELECTRICAL, ELECTRONIC SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM Remove bearing cone (1) and splined connector. 70-421-491 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.
  • Page 78 HYDRAULIC, PNEUMATIC, ELECTRICAL, ELECTRONIC SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM Remove swash plate (1) assembly. Inspect components for wear and replace if damaged or worn. 70-421-461 84479148A 15/09/2011 A.10.A / 50...
  • Page 79 HYDRAULIC, PNEUMATIC, ELECTRICAL, ELECTRONIC SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM Hydraulic pump Variable displacement pump - Remove Prior operation: Battery - Disconnect (A.30.A) WARNING Heavy objects! Lift and handle all heavy components us- ing lifting equipment with adequate ca- pacity. Always support units or parts with suitable slings or hooks.
  • Page 80 HYDRAULIC, PNEUMATIC, ELECTRICAL, ELECTRONIC SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM Remove the main hydraulic oil filter housing guard. BAIL10CVT627AVA Release the air bleed valve (1) and wait a few mo- ments for the oil to drain back to the reservoir. Remove the main hydraulic oil filter housing drain plug (2) and drain the oil into a suitable container.
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T7.185T7.200T7.210

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