Combined lubrication system, under pressure and splashing
Scheme of the lubrication system is shown in the figure
Oil is supplied through hose 4 by a gear oil pump 6 to oil filter 10, then through hose 11 to water-oil cooler 1 and then to the main oil line and to the servo drive of the fuel injection advance angle control mechanism (for GAZ-5602).
From the main oil line, oil is supplied to the crankshaft main bearings, connecting rod bearings, camshaft bearings, oil nozzles through the piston cooling valve (to cool the piston) and through a special fitting for lubricating the turbocharger 12 and vacuum pump 9.
The gear type oil pump is driven by a gear mounted on the crankshaft toe. The pump has a pressure reducing valve 5.
The pressure in the lubrication system should be:
- at idle not less than 100 kPa (1.0 kgf/cm2) at an oil temperature of 80-90°C;
- at nominal speed (3800 rpm) within 500-700 kPa (5-7 kgf/cm2).
A short-term decrease in oil pressure up to 400 kPa (4 kgf / cm2) is allowed for 5 minutes per 1 hour of operation.
The oil filter, non-separable, is designed to clean the oil supplied to the main oil line.
A sectional-type oil-water radiator is built into the engine cooling system and mounted on a monoblock.
Maintenance of the GAZ-560 diesel lubrication system
Checking the oil level is done daily before starting the engine, while the car must be installed on a level area.
The oil level in the crankcase must be between the upper and lower marks on the level indicator (dipstick). If the oil level reaches the lower mark, then the oil must be topped up.
It is forbidden to operate the engine when the oil level is below the lower mark on the gauge. After stopping the engine, check the oil no earlier than 5 minutes.
Oil and oil filter changes
Oil change should be carried out on a hot engine, it takes at least 10 minutes to completely drain the oil.
At the same time as changing the oil, the oil filter must be changed.
Recommended oil filters: Fleetguard LF3402 or LF3449, Knecht OS59 (F0371), Mann W940 or W940/15N, 560-1017005-02, 560-1017005-03.
When changing engine oil, use only the oil specified in this manual. When replacing one brand of oil with another, engine flushing is required.
To flush the engine lubrication system, you must:
- drain the used oil from the crankcase of a warm engine;
- fill in replacement oil or special flushing oil 2-4 mm above the upper mark on the level indicator;
- start the engine and let it run at the minimum crankshaft speed for at least ten minutes;
—drain replacement oil or special flushing oil;
- unscrew the used oil filter;
- lubricate the rubber gasket of the new oil filter with engine oil and screw it in until the rubber gasket touches the seating surface on the filter housing, then tighten it another ¾ turn;
- pour fresh oil into the engine.
Attention! When replacing high-pressure oil hoses, it is necessary to pay attention to the correct connection of them to the oil filter housing - there are arrows on the housing indicating the “inlet” from the oil pump to the filter and the “outlet” from the filter to the oil cooler.
Incorrect connection will result in engine damage.