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:

Safety Belt Use During Pregnancy
Safety belts work for everyone, including pregnant women. Like all occupants, they are more likely to be seriously injured if they do not wear safety belts. A pregnant woman should wear a lap-shoulder belt, and the lap portion should be worn as low as possible, below the rounding, throughout ...

Detecting the Vehicle Ahead
The green vehicle ahead indicator will appear when a vehicle is detected ahead. Whenever this indicator does not appear, FCA will not respond. The indicator may disappear on curves, highway exit ramps, or hills, or due to poor visibility. The FCA system will not detect another vehicle ahead ...

Transmission Assemble (Gen 2)
Special Tools 3-9506289 Universal Adapter R-0007758 Holding Fixture S-9407197 Differential Rotating Tool S-9407198 Differential Bearing Race Wrench For equivalent regional tools, refer to Special Tools. Install the clutch and differential housing assembly (1) onto ...

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