Chevrolet Sonic manuals

Chevrolet Sonic Repair Manual: Lubrication Description

Chevrolet Sonic Repair Manual / Powertrain / Engine / General / Lubrication Description


Oil is applied under pressure to the crankshaft (8), connecting rods (5), camshaft

Oil is applied under pressure to the crankshaft (8), connecting rods (5), camshaft adjuster (1), camshaft bearing surfaces (3) and valve tappets (4). All other moving parts are lubricated by gravity flow or splash. Oil enters the rotor type oil pump (10) through a fixed inlet screen (9). The oil pump is driven by the crankshaft. The oil pump body is within the engine front cover (11). The pressurized oil from the pump passes through the oil cooling system and the oil filter (6). The oil filter is integrated with the oil cooling system housing (7) that is connected to the front of the engine block. The oil filter is a disposable cartridge type. A by-pass valve in the filter cap allows continuous oil flow in case the oil filter should become restricted. The connecting rod bearings are oiled by constant oil flow passages through the crankshaft connecting the main journals to the rod journals. A groove around each upper main bearing furnishes oil to the drilled crankshaft passages. The pressurized oil passes through the cylinder head restrictor orifice into the cylinder head and then into each camshaft feed gallery. An engine oil pressure switch or sensor is installed at the end. Oil returns to the oil pan through passages cast into the cylinder head. The crankcase ventilation system does not contain to the lubrication system, but to the oil circuit. It is used to consume crankcase vapors in the combustion process instead of venting them to atmosphere. Fresh air from the intake system is supplied to the crankcase, mixed with blow by gases and then passed through a calibrated orifice of the crankcase ventilation tube (2) into the intake manifold.

Generator Replacement (LUW)
Removal Procedure Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection. Raise and support the vehicle. Refer to Lifting and Jacking ...

Neutral - Engine Running (Gen 1)
When the gear selector is moved to the Neutral (N) position, the hydraulic and electrical system operation is identical to Park (P) range. However, if Neutral is selected after the vehicle was ope ...

Other materials:

Headlamp Replacement
Headlamp Replacement Callout Component Name Preliminary Procedure Remove the front bumper fascia. Refer to Front Bumper Fascia Replacement. 1 Headlamp Assembly Screw (Qty:?€‰4) Cautio ...

Wiper/Washer System Description and Operation
Wiper/Washer System Components The wiper/washer system consists of the following electrical components: Windshield Wiper Relay Windshield Wiper Speed Control Relay Windshield Washer Pump Relay Windshield Washer Pump Windshield Wiper Motor Windshield Wiper/Washer Switch ...

Camshaft Cover Replacement
Camshaft Cover Replacement Callout Component Name Preliminary Procedures Remove the ignition coil. Refer to Ignition Coil Replacement. Remove the PCV hose. Refer to Positive Crankcase Ventilation Hose/Pipe/Tube Replac ...

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