The first volume provides information on:

• - operation
• - repair of engines 9, 11, 12, 14 liters
• - repair steering

Content

Foreword

• SCANIA vehicle designation decoding

Operating instructions

• General information
• Instruments and controls
• Signalers, indicators, arrow pointers
• Brake pressure, front circuit (1)
• Locking center differential for tractors with a two-axle bogie
• Brake pressure, rear circuit (2)
• Switches and controls
• Lifting an additional axle and redistributing the load
• Rear axle differential lock
• Mechanical air suspension
• Steered additional axle, vehicles 6x2 * 4, 8x2 * 6
• Retarder (retarder)
• Diagnostic system switches
• Headlight range control
• Power takeoff
• Additional indicators and signaling devices
• Motor retarder
• Smoke limiter
• Coupling heads of the pneumatic brake actuator
• Hand brake
• Safety valve
• Trailer handbrake (optional)
• Additional fitting, parking brake circuit
• Electrical system
• Central fuse and relay box
• Key features
• Rechargeable batteries
• Using other vehicle batteries to start the engine
• Operation
• Starting the engine
• Manual gas (vehicles without EDC)
• Flare start (vehicles without EDC)
• When the car gets stuck
• Gear shifting
• 9-speed gearbox
• 12-speed gearbox
• 14-speed gearbox
• Gear shifting technique
• Braking
• Engine shutdown, parking
• Cab rollover
• Service
• Chassis lubrication
• Automatic chassis lubrication (ACL)
• Additional lubrication
• Checking the lubrication system
• Lubrication using an oiler
• Pressure gun lubrication
• Lubrication charts using a pressure gun
• Engine oil
• Maintenance of the oil separator
• Cleaning
• Checking work
• Diesel fuel and fuel system
• Fuel filter with water separator
• Replacing the fuel filter
• Bleeding the fuel system
• Cooling system
• Belt drive
• 9 liter air-conditioned engine without idler
• 9 liter engine without air conditioning and idler roller
• 11 and 12 liter A / C engines with one idler roller
• 11 and 12 liter A / C engines with twin idler rollers
• 11- and 12-liter engines without air conditioning and idler roller
• 11- and 12-liter engines without air conditioning
• 14 liter air-conditioned engine with one idler
• 14 liter air-conditioned engine with twin idler rollers
• 14-liter engine without air conditioning
• Air purifier
• Filter replacement
• Filter clogging indicator
• Clutch
• Gearbox
• Oil and filter change, filling tanks, viscosity requirements
• Rear axle reducer
• Oil change, filling capacity, recommended oils, viscosity requirements
• Wheel reducers
• Oil change, refueling tanks
• Additional axle lifting mechanism
• Power steering
• Screen washers
• Cab tipping system
• Braking system
• Checking the thickness of the brake pads of drum brakes and disc brakes
• Replacing lamps
• Wheels
• Disc wheel
• Spoke wheel
• Towing start
• Towing
• Disconnecting the propeller shaft
• Charging the pneumatic system
• Parking brake circuit nipple
• Disengaging the parking brake without compressed air
• Evacuation from the ditch
• Portable tool kit

Engines

• 9 liter engine
• Key features
• Cylinder heads
• Checking and adjusting valve clearance
• Compression
• Removing the cylinder heads
• Disassembly of cylinder heads
• Replacing the valve stem packing
• Valve inspection and grinding
• Valve seats
• Replacing the rocker arm sleeve
• Replacing the valve guides
• Cylinder heads
• Turbocharger
• Cleaning the compressor impeller
• Measuring radial and longitudinal clearance
• Removal and installation of a turbocharger
• Connecting rod-piston group
• Removing and disassembling the connecting rod and piston
• Checking the connecting rod
• Piston and connecting rod assembly
• Removing cylinder liners
• Cylinder liner height measurement
• Height adjustment of the cylinder liner
• Installing the cylinder liner
• Installing the piston and connecting rod
• Flywheel and flywheel housing
• Removing the flywheel
• Replacing the support bearing
• Replacing the ring gear
• Replacing the crankshaft oil seal
• Replacing the gasket behind the flywheel housing
• Installing the flywheel
• Distribution mechanism
• Crankshaft oil seal
• Timing cover
• Idler gear
• Crankshaft gear
• Camshaft gear
• Camshaft
• Crankshaft
• Lubrication system
• Replacing oil seals and oil cooler cartridge
• Maintenance of the oil separator
• Oil pump
• Replacing the engine
• Injection equipment and engine speed control
• 11 liter engine (DC11)
• Engine 12 liters
• Key Features
• Replacing the engine
• Installing the engine on a repair stand
• Cylinder heads
• Checking and adjusting valve clearance
• Removing the cylinder head
• Installing the cylinder head
• Valves
• Valve inspection and grinding
• Valve seals
• Replacing valve seats
• Grinding
• Replacing the valve guides
• Replacing the injector body (engines with high pressure fuel pumps)
• Replacing the unit injector body
• Cylinder block
• Cylinder liners
• Measuring cylinder liner protrusion
• Flywheel and flywheel housing
• Replacing the crankshaft rear oil seal
• Flywheel housing removal
• Installing the flywheel housing
• Replacing the camshaft bearings
• Crankcase ventilation and front crankshaft oil seal
• Replacing the front crankshaft oil seal
• Causes of increased oil consumption
• Diaphragm replacement
• Connecting rod-piston group
• Pistons
• Piston rings
• Checking the connecting rod
• Flywheel
• Crankshaft
• Distribution mechanism
• Idler gears
• Replacing the compressor bearing in the intermediate gear
• Replacing the camshaft bearing in the idler gear
• Camshaft gear
• Crankshaft gear
• Camshaft
• Checking the installation of the camshaft
• Fan drive
• Lubrication system
• Oil pressure
• Replacing the oil filter
• Oil cooler
• Oil cleaner
• Oil pump
• Turbocharger
• Compressed air pressure measurement
• Cleaning the compressor impeller
• Troubleshooting
• Timing gear with belt drive
• Engines with air conditioning and single idler
• Engines with air conditioning and two idler pulleys
• Engines without air conditioning and idler pulleys
• Non-A / C motors with idler pulley
• Injection equipment and engine speed control
• Engine 14 liters
• Key features
• Cylinder heads
• Checking and adjusting valve clearance
• Withdrawal
• Disassembly
• Replacing the valve stem cap
• Valve inspection and grinding
• Replacing the rocker arm sleeve
• Replacing the valve guides
• Cylinder heads
• Turbocharger
• Compressed air pressure measurement
• Cleaning the compressor impeller
• Measuring radial and longitudinal clearance
• If the turbocharger does not work
• Removal and installation of a turbocharger
• Connecting rod-piston group
• Weight classification of connecting rods
• Checking the connecting rod
• Piston and connecting rod assembly
• Removing the cylinder liner
• Cylinder liner height measurement
• Height adjustment of the cylinder liner
• Installing the cylinder liner
• Installing the piston and connecting rod
• Flywheel and flywheel housing
• Replacing the gasket behind the flywheel housing
• Distribution mechanism
• Compressor bottom bolt
• Fan drive
• Crankshaft oil seal
• Timing cover
• Idler gear
• Camshaft gear
• Crankshaft gear
• Camshaft
• Crankshaft
• Lubrication system
• Oil cooler
• Oil cleaner
• Oil pump
• Injection equipment and engine speed control

EDC MS5 system

• General information
• EDC system management
• EDC components
• Gas pedal sensor
• Power relay
• Engine speed sensors
• Compressed air pressure sensor
• Compressed air temperature sensor
• Coolant temperature sensor
• Injection pump
• Variable injection timing
• Needle movement sensor
• Junction box
• Cruise control
• Brake pedal sensors
• Clutch pedal sensor
• Tachometer
• Indicator lamp
• Diagnostic switch and lamp
• EDC control unit
• Control unit contacts
• Manual gas regulator normal position
• EDC functions
• Engine speed monitoring
• Manual throttle limitation
• Increased idle speed
• Fixed engine speed
• Emergency stop
• Fixed engine speed programming
• Torque limiting
• Rate limiting
• Warning system
• Shutdown test
• Fault codes (errors)
• Fault code memory
• Limp-home - crawl home
• Communication with other systems
• Cruise control
• Retarder (retarder)
• ABS / TC and EBS
• Mountain brake
• Passing control signals
• PWM signal
• CAN communication
• Setting up and maintaining the EDC system
• Operational test
• Checking the number of idle turns
• Idle speed control
• Permanently erase error codes with a PC
• Connecting special functions
• Stresses and resistances of EDC components
• Stress test
• Resistance check
• Fault codes (errors)
• Malfunctions of engine systems that do not display codes

Steering

• Steering
• Power steering operation
• Troubleshooting
• Steering gear play
• Checking the steering gear play
• Checking ball joints
• Tight steering
• High friction in the steering knuckle thrust bearing
• Stiff steering after unloading the machine
• Steering system check
• Longitudinal instability of the stroke
• Backlash in steering gear
• Different lateral instability of the front and rear wheels
• Longitudinal instability when towing a trailer
• Shrinking to one side
• Uneven wear on front tires
• Rear wheel rolling direction
• Trucks with multiple drive axles with steering wheels
• An error in the geometric scheme of the steering wheels
• Pulling the machine to one side caused by the steering gear
• Rudder vibration on the go without braking
• Vibration from rear wheels
• Wheel imbalance
• Radial wheel runout
• Shimmy
• Steering wheel vibration when braking
• Checking the brake drum on the hub
• Insufficient flatness of the rim
• Installing wheels
• Fitting wheels with pressed steel rims
• Fitting wheels with stamped spokes
• Specifications
• Steering column
• Replacing the steering column
• Replacing the bearing housing
• Replacing the steering column bracket
• Replacing the wheel angle limiter without a protective plate
• Replacing the wheel angle stop with protective plate
• Replacing the wheel limiter cylinder
• Specifications
• Steering gear TAS85
• Work without power steering
• Working with hydraulic booster
• End delimiter
• Pressure limiting valve
• Removing and installing steering gear TAS85
• Dismantling and repair of steering gear TAS85
• Important information
• End delimiter
• Replacing the drive shaft seal
• Dismantling the steering gear
• Replacing other oil seals
• Steering gear assembly
• Setting the gearing of the sector shaft
• End limiter installation instructions
• Specifications
• Disassembly and repair of steering gear ZF8098
• Dismantling the steering gear
• Steering assembly assembly
• Specifications
• Two-channel control on the example of TAS86
• Circuit diagram
• Steering models
• General information
• Two-way valve
• Hydraulic pumps
• Circuit 1
• Circuit 2
• Fluid tanks
• Security system
• Circuit health check
• Circuit 1
• Circuit 2
• Hydraulic pump chain 2
• Security system wiring diagram
• Removing the pump
• Adjusting the pressure limiting valve
• Hydraulic pump gaskets change
• Steering gear TAS86
• Replacing the two-way valve (for trucks with two hydraulic circuits)
• Replacing sensors
• Specifications
• Power steering pump LUK VT75A
• Job description
• Removing the pump
• Disassembling the pump
• Checking and replacing parts
• Assembling the pump
• Installation
• Steering - technical data
• Wheel alignment angles
• Toe-in of front wheels (mm / m)
• Camber front wheels (angular degrees)
• Kingpin pitch (degrees)
• KPI - kingpin lateral inclination (degrees)
• Front wheel toe-in
• How to use the front wheel alignment diagrams
• AM860, AM920
• AMA780
• AM620, AM621
• ARA760
• AMD900
• AM920
• AM900
• AM860, AMA860
• ARA900