Need help?Do you have a question about the UD Trucks QUESTER Series and is the answer not in the manual?
Manual covers vehicle operations, safety, and maintenance.
Details on vehicle identification plates and VIN locations.
Crucial safety checks and procedures to perform before driving.
Step-by-step instructions for safely starting the engine.
Information about speed limiter function and ranges.
Recommendations for safe parking to prevent damage.
Guidance on handling common vehicle issues and towing.
Procedures and safety precautions for tilting the vehicle cab.
Steps to take when the vehicle overheats and handling the radiator cap.
Procedures for fuel filter replacement and fuel tank maintenance.
Safety guidelines for charging and handling the vehicle battery.
General safety advice, including drive belt inspection.
Warnings regarding vehicle modifications and electrical welding.
Instructions and precautions for washing the vehicle.
Explanation of the On-Board Diagnostics system and emission control.
Specific information for driving vehicles with Euro IV/China IV emission standards.
Overview of the telematics system for data logging and communication.
Step-by-step guide on how to safely enter the vehicle cab.
Instructions for opening, closing, locking, and unlocking the vehicle doors.
Detailed guide on adjusting driver and passenger seats for comfort and safety.
Proper usage and precautions for wearing seat belts for safety.
Instructions on how to adjust the steering wheel for optimal driving position.
Overview of the instrument panel and control layout.
Description and meaning of various telltale indicators in the instrument cluster.
How to interact with and control the vehicle's display menu.
Identification and function of various switches on the dashboard.
Operation of the combination switch for lights, wipers, and indicators.
Explanation of 6, 9, and 12-speed gearshift lever operations.
How to activate and deactivate Power Take-Off (PTO) systems.
How the fuel coaching system guides drivers for optimal fuel efficiency.
Procedures for fifth wheel inspection and pre-service checks.
Purpose and operation of the differential lock for traction control.
How to operate the bogie lift assembly for different conditions.
Hitching procedures for connecting a tractor and trailer.
Information on horn operation and sun visors.
Functions and actions taken by the engine protection system.
Description of various interior accessories like storage boxes and cup holders.
Details on the front panel controls of the audio system.
Basic operations of the audio system, including ON/OFF and volume.
Instructions for tuning, storing, and recalling radio stations.
How to connect and use a USB memory device for music playback.
Customizing initial settings for the audio unit according to user preference.
Troubleshooting common radio and USB player issues before seeking service.
Operation of power windows and ventilation systems.
Details on air vents and operating the air conditioning system.
Comprehensive guide to daily pre-driving inspection points.
Specific instructions for inspecting tyres, wheels, and fluids.
Checking wheel assemblies for looseness, damage, and leaks.
Procedure for checking and maintaining the engine oil level.
How to check and maintain the engine coolant level.
Inspecting the parking brake lever for proper tension and engagement.
Checking windshield washer fluid level and spray performance.
Evaluating engine starting quality and listening for abnormal sounds.
Checking the air pressure gauge and air charging performance.
Verifying normal operation of the brake valve and pedal.
Checking all vehicle lights for proper function and clarity.
Essential steps and precautions before starting and during engine operation.
Guidelines for handling a new vehicle and precautions while driving.
Advice for driving in poor roads, rain, snow, and icy conditions.
General overview of customer-performable maintenance and inspection procedures.
Inspection and replacement procedures for the air cleaner filter.
Procedure for replacing the engine oil filter and associated parts.
Inspection and replacement procedures for the fuel filter.
Procedure for bleeding air from the fuel system.
Battery maintenance and safety precautions, handled by authorized dealers.
Tyre rotation, inspection, and precautions for mounting.
Jack-up points and procedures for safely lifting the vehicle.
Procedures for replacing bulbs and fuses in the vehicle's electrical system.
Adjusting and inspecting vehicle mirrors for optimal visibility.
Information on coolant, water leakage, and coolant replacement.
Checking brake pedal free play and overall braking performance.
General tools required for daily checks and services.
Engine oil recommendations, checks, and replacement procedures.
Inspection and lubrication procedures for the fifth wheel.
Procedure for replacing the wiper blades.
Precautions and procedures for washing the vehicle.
Information on the exhaust emission control system and silencer handling.
Guidelines for preparing and maintaining the vehicle during storage.
Periodic greasing procedures for various points on the vehicle.
Owner's responsibility for vehicle care and maintenance schedules.
Precautions and steps to take during a vehicle breakdown situation.
Precautions and procedures for jump-starting the vehicle's engine.
Technical standards for chassis alignment, tyre pressure, and wheel nuts.
Recommended lubricants for engine oil, gear oil, axle oil, and coolant.
Approximate capacities (liters) for engine oil, coolant, and power steering fluid.
To Next Page
General