Alfa Romeo 155 engine, repair e-manual

Content

Engine

• Generalities
• Structure
• Organs of movement
• Auxiliary organs

Lubrication

• Lubrication system

Engine removal / installation

• Removal
• Installation

Bench overhaul of engine

• Engine disassembly and reassembly
• Removal of components - left-hand side
• Removal of components - right-hand side
• Removal of gearbox-differential group
• Removal of clutch plate
• Removal of air intake box
• Removal of compressor
• Removal of alternator
• Removal of thermostatic group
• Removal of fuel supply manifold
• Removal of timing belt
• Removal of hydraulic belt tensioner
• Removal of timing pulley
• Removal of cylinder heads
• Removal of oil sump
• Removal of oil pump
• Disassembly of oil pump
• Removal of cylinder liners and pistons
• Removal of water pump
• Removal of front cover
• Removal of flywheel
• Removal of crankshaft
• Disassembly of cylinder heads
• Preliminary operations
• Removal of oil pump drive pulley (Right-hand cylinder head only)
• Removal of camshaft and rocker arm support shaft
• Disassembly of valves
• Removal of intake manifold
• Cylinder heads checks and inspections
• Checking lower plane of cylinder heads
• Checking cylinder head bushings
• Withdrawal of bushing «A»
• Installation of bushing «A»
• Fearing in of bushing «A»
• Withdrawal of bushing «B»
• Installation of bushing «B»
• Fearing in of bushing «B»
• Withdrawal of bushing «C»
• Installation of bushing «C»
• Replacing valve seatings
• Play between valve guides and valve stem
• Replacing valve guides
• Valves
• Turning of valve seats
• Valve springs
• Valve cups seatings and valve cups - intake side
• Valve cups seatings and valve cups - exhaust side
• Rocker arms and rocker arm shaft
• Camshafts and supports
• Axial play of camshafts
• Checking and inspecting of engine block
• Main journal caps
• Checking cylinder liner protrusion
• Main and rod bearings - thrust half bearings
• Crankshaft
• Replacing engine flywheel ring gear
• Cylinder liners
• Pistons and gudgeon pins
• Seal and oil scraper rings
• Rods
• Checking weight difference between single pistons and single rods
• Checking and inspection of oil pump
• Overhaul of hydraulic belt tensioner
• Indications regarding refitting
• Checking valve seals
• Positioning the rocker arm support shaft
• Checking and setting valve clearance
• Refitting crankshaft
• Checking crankshaft axial play
• Refitting crankshaft rear oil seal
• Refitting cylinder liners, pistons and rods
• Refitting cylinder heads
• Installation of timing drive belt and checking timing
• Cylinder compression test

Checks and inspections – electrical components

• Engine oil pressure gauge
• Engine oil minimum level sensor
• Engine oil minimum pressure warning light sensor
• Engine oil temperature sensor

On-vehicle operations

• Removal of cylinder heads
• Refitting cylinder heads
• Removal/refitting oil sump

Technical characteristics and specifications

• Technical characteristics of the engine Complete engine block
• Rod - piston assembly
• Cylinder heads
• Angular values of the actual timing diagram
• Fluids and lubricants
• Sealants and fixatives
• Abrasives
• Tightening torques

Specific tools

Fault diagnosis and corrective interventions

Customers reviews