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Holder 4.74 manual Troubleshooting guide

Models: 4.74

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Operating instructions					C 4.74
Troubleshooting guide					C 4.74
Troubleshooting guide
Problem		Cause		Remedy
Problem		Cause		Remedy

Low tractive force		Fault in boost or high-pressure system		Check suction filter in return line
				Check boost pressure in hydraulic system
				Check high-pressure hydraulic system
				Check for leaks on variable-
				displacement pumps and wheel motors
				Check control units and proportional
				solenoids of variable-displacement
				pumps
				Check maximum current at
				proportional solenoids
				Eliminate detected faults

No forward and reverse travel		Drive of variable-displacement pumps		Repair
		defective
		Forward/reverse selector switch in		Put forward/reverse selector switch
		neutral		in desired direction of travel
		Machine started with preselected		Put forward/reverse selector switch
		direction of travel		in neutral and preselect desired
				direction of travel
		No power supplied to the electronics		Check fuses
				Check electric connection
		Electrical connection to the variable		Make connection
		pump interrupted

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Image 139

Holder 4.74 manual Troubleshooting guide

Contents

Operating Instructions Development General notes on serviceOperating instructions ForewordForeword Date of issue and manual version NovemberExplanation of terminology Table of contents Page Unintended applications Instructions for the vehicleIntended Use Site of operationResidual hazards and risks Instructions for the vehicleOver 32 km/h Operating instructionsDriver’s licence Driver’s licence classesOperating instructions Operating instructions Operating instructions Work clothing SafetyGeneral notes on safety Safety notes for later installationsGear oil, engine oil, diesel fuel Safety precautions for handling fuels and oilsHydraulic oil, brake fluid Battery acidEmissions Exhaust gases Heat BatteryVehicle dimensions Dimensional drawing Technical dataTable of dimensions C Technical dataTrack widths Tires 1040 mm Vehicle Track width e Total width f Dimension TypeNormal track Weights Max Type Weight Engine specifications Tires Type Technical dataTraction hydraulics Trailer hitch Assembly Suppl. information Description SteeringFront power lift BrakesLoading platform Assembly Suppl. information Description Rear power liftWorking hydraulics with Steering Vehicle overall Assembly Suppl. information Description PTOsElectrical system Fuel systemPage Exhaust gas identification Noise levelViews Vehicle14 DescriptionFront left view Vehicle DescriptionRear right view Operating controls Driver’s stationRight front controls console Right rear console controls Hand throttle Rear console controlsPedals JoystickHeater until Steering wheel adjustmentMultifunctional display, legend 10 9 8Controls in cabin at front bottom Controls in cabin at front topDoor controls Door opener Controls in cabin at rearIdentification plates Location of plates and labelsMounting instructions for licence plates Overview of options and variants selection Assembly Additional information Dimension/Order No./TypeAssembly Supplementary information Dimension/Order No./Type Accessories Page Check and clean the cooler and debris screens Daily checks and services prior to taking into operationTaking into operation Do not fill too much oil Turn on the battery isolating switchTaking into operation Check the engine oil levelCheck the tire inflation pressure Check the trailer hitch option if requiredCheck the hydraulic oil level Approx L Filling fuelDo not adjust the steering wheel while driv- ing Adjust the steering wheelCheck the brake fluid level Do not adjust the seat while driving. Risk of accidents Adjust the driver’s seat with mechanical suspensionAdjusting the lumbar padding Adjusting the driver’s seat with pneumatic suspen- sionAdjusting the backrest inclination Adjusting the horizontal suspension Adjusting the driver’s weightAdjusting the seat horizontally Check the lights and rear view mirror Filling washing waterStarting the engine Start the engine BildC164 Check the brakes and steering for proper operation Operation Driving safety rulesBefore starting to drive Driving OperationDriving with hydrostatic drive and digital electronics Table of driving ranges OperationStop Selecting on-road travel transport speed Setting the working speed of programs 3Operating instructions Adjusting the fine control knob Driving with SDS Special Drive System Changing the direction of travel Operating the inching pedalRelease the inching pedal again after passing Obstacle Vehicle will resume the previously selected SpeedDisengaging the differential lock Engaging the differential lockTwo-stage steering SteeringParking brake is not intended to be used Applying the service brakeBrakes Applying the parking brakeReleasing the parking brake An alarm is sounded when driving with Hand brake appliedDriving on slopes UphillRemoval of hydraulic oil for stationary operation Special operating instructionsStationary operation Place the vehicle n level ground in both di- rectionsSpecial operating instructions Adjusting the track width215 Nm Engine oil for winter operation Ballast weightsOperation in winter Oil preheating Winter diesel fuelPage Operating the implements Safety instructions for handling implementsPossible implements Additional information on implements Operating the implementsFront implement Rear implement or front/rear combinationsOperating instructions Attaching implements Adjusting the length of the pintle hook bar Adjusting the pintle hooks and pintle hook barsEquipment must not hit the cabin Adjusting the upper linkBoth threads must be screwed in equally far Connecting hydraulic lines Removing implements Installing the cardan shaftsOperating the joystick Joystick operation Tilting the front power lift Operating the front power liftSideshifting the front power lift Operating the front power lift with keyboard Operating the tilting device with the keyboard Switching the front power lift to double-actingOperating the sideshift with the keyboard Transport safetyExternal operation of the front power lift Toggle button for Float Position Button Flow limiter for joystickOperating the rear power lift External operation of the rear power lift Operating the hydraulic couplings Operating the blue hydraulic couplings Operating the green hydraulic couplingsOperating the yellow and white hydraulic couplings Turning on the front PTO Turning on the rear PTO Adjusting the hysteresis Operating the hydraulic cushioning* front power liftGas pressure in the diaphragm accumu- lator is 30 bar Operation with implement cushioning Driving on-road with implement cushioningTurning the implement cushioning off 102 Operating the implements Turning off the implement variable-displacement Pump Make sure no-one is standing in the danger zone at the rear Operating the hydraulic dumperPress button 4 only at low engine speed Operating priority flow valveSlowly increase the speed of the engine Turning off the priority flow valve Press button 3 only at low engine speed 109 Page Removing the roof hatch Other activitiesOperating the driver’s cab Operating the roof hatch Opening the roof hatchTurning on windshield wiper/washer Other activitiesFront windshield wiper/washer Lights Turning on and operating the lights Turn the preheat/starter switch to positionTurning on high beam 13 14 Turning on the top headlights Signalling to the left, signalling to the rightOperating the horn Turning on the rotating beacon Operating the hazard warning flasher systemFlood light must not be used in the public traffic area Turning on the flood lightInterior light Turning on the interior light Radio* and loudspeakers Operating the radio Power socket Connecting equipment to the power socketHeating and ventilating Turning on the heater HeaterFresh air blower has 2 speeds Turning on the ventilationAir conditioning Cleaning the condenserAir conditioning Operating the air conditioningVehicle fuses Fuses123 Page Leaving the vehicle Taking out of operationStopping Leaving the vehicle Taking out of operationShutdown Do not leave the cabin without taking the ig- nition keyTrailers, towing Operating the trailer hitch manually, attaching trailers Trailers, towingBearing load Trailer hitch must be completely closed Driving with trailers Do not step or stand under a suspended load. Danger Transport, hoisting, towingInstructions for transport Hoisting instructionsTowing instructions Transport, hoisting, towingBrake cable is very taut risk of injury Secure the vehicle against rolling with chocksPage Adjusting the speedometer Indicators, adjustmentsPage Problem Cause Remedy Troubleshooting guideProblems in engine and exhaust gas turbo Problems in electronic and hydraulic driving systemsTroubleshooting guide Troubleshooting guide Cause Remedy 141 Problems in the hydraulic system and steer- ing 143 Problems in the working hydraulic system 145 146 147 Page How to value the vehicle? General remarks on maintenanceQualification of service personnel ServiceFollowing services were carried out General remarks on maintenanceService Hours Date Signature Interval Operation Handling fuels and lubricants Safety notes for maintenance152 Work on the electrical system Disconnect the battery ground leadJacking up Jack lift pointsTo lower it, return the changeover lever 1 to the left Securing the dump body loading platformRaise the cabin carefully Tilting the cabMaintenance after the first 500 hours Maintenance scheduleMaintenance every 500 hours Maintenance scheduleMaintenance every 3000 hours Maintenance every 1500 hoursAnnual maintenance Page Maintenance after the first 50 hours Maintenance during the first period of operationCheck the engine for leaks Page Adjusting the speedometer Maintenance as requiredSwitch layout Tire size Combination Maintenance as requiredReplacement CleaningPage Check the cooling system Periodic maintenance Maintenance every 125 hoursClean the cooling system Clean with compressed air Clean with cold cleaner or pressure washerCheck the battery and cable terminals Maintenance every 125 hoursCheck the high pressure hoses Check the brake fluid level for the foot brake Check the steering cylinder and orbitrolDo not operate the vehicle with a defective braking system Check the braking systemGrease the vehicle Tighten wheel nuts Tighten nuts and bolts215 Nm Check the electrical system Clean the fresh air filter Page Litres Maintenance every 500 hoursChange the engine oil Observe the instructions for handling fuels and lubricantsChange the engine oil filter Maintenance every 500 hoursCheck hose couplings for leaks Check the heating system Page Check the battery Maintenance every 1000 hoursCheck engine valve clearances Service V-belts only with the engine station- ary Maintenance every 1000 hoursCheck V-belt tension and condition Change the fuel filter and fuel prefilter Clean / replace the fuel pump strainerFuel system is bled automatically Do not inject too much grease to prevent damage to the seal Lubricating the cardan joint nipplesChange the hydraulic oil while at operating temperature Maintenance every 1500 hoursClean Maintenance every 1500 hoursChange Matically Air in the hydraulic system is bled autoPage Check the injection nozzles Maintenance every 3000 hoursChange the toothed belt Page Change the brake fluid of the foot brake Annual maintenancePage Laying up Putting the vehicle back in service after lay-upEngine preservation Remove engine preservation Laying upFuel and lubricant recommendations Greases Fuel and lubricant recommendationsRecommended engine oils and greases Manufacturer Lubricating oil typeDo not use mineral oil Brake fluidFuels Page Filling quantities Maintenance dataTightening torques Hexagon screws and studs Maintenance dataList of replacement parts Description Order No Bulbs 12 Lights Rating Maintenance data 202 100 Alphabetical index118 Alphabetical index205 206 207 208 209 210