Howo A7 D12 engine, repair e-manual (in Russian)
About the manual
Engine type: diesel
In the manual you will find
- Step-by-step guide to repair various components and assemblies
- Self-care and maintenance instructions
- Engine design and prevention information
- Information for a trip to the service station, if self-repair is not possible
About the manual
Engine type: diesel
In the manual you will find
- Step-by-step guide to repair various components and assemblies
- Self-care and maintenance instructions
- Engine design and prevention information
- Information for a trip to the service station, if self-repair is not possible
Content
D12 engine
- D12 Engine design basics
- Cylinder block, crankshaft housing, flywheel housing
- Crank mechanism
- Gear drive
- Lubrication system
- Fuel supply system
- Cooling system
- Air intake / exhaust system
- Air compressor
- Electrical system
- D12 engine basic data
- Main technical characteristics of the D12 engine
- D12 engine - clearances between main parts
- Tightening methods and torques for the main bolts of the D12 engine
- Locking compounds and additional materials used on the diesel engine D12
D12 engine assembly features
- Dismantling and assembly of the common-rail fuel supply system of the diesel engine of the D12 Euro III series
Troubleshooting
- Engine won't start
- Electrical circuit problems
- Lubrication system
- Fuel supply system
- Fuel injection advance angle
- Abnormal engine noise
- Abnormal noise from connecting rod bearing
- Abnormal main bearing shell noise
- Abnormal piston pin noise
- Abnormal camshaft sound
- Abnormal noise from the timing gears
- Abnormal noise from broken idler bearing
- Insufficient power, vibration and unstable engine operation, unusual sound from the exhaust pipe
- Knocking sound from the engine when it is running
- Abnormal camshaft sound
- Abnormal sound when the turbocharger is running
- Premature abrasion
- Engine oil pressure too low
- Oil and coolant mixture
- Insufficient engine power
- Fuel supply system problem
- Intake and exhaust system
- Crankshaft / connecting rod
- Fuel injection advance angle
- Malfunctions related to multiple vehicle systems
- Common Rail high pressure diesel engine
- High coolant temperature
- Cooling system circuit
- Other
- Cooling system overflow
- Cooling system
- Other
- Diesel in oil pan
- Injector
- Short fuel return pipe
- Injector retainer bolt
- Ejection of black smoke
- White smoke release
- Blue smoke release
- High engine oil consumption