The oil filter element is mounted on a support located on the exhaust manifold side of the engine and is protected from the heat transferred from the exhaust manifold/catalyst by a heat shield.
Passing through the oil filter, the purified oil enters the main oil line. It has an emergency oil pressure drop sensor, which, by turning on the warning lamp in the instrument cluster, signals low oil pressure. The oil filter has a bypass valve, through which, in the event of severe contamination of the filter, crude oil enters directly into the oil line.
From the main line, oil under pressure is supplied through the channels to lubricate the main bearings of the crankshaft and then through the channels in the crankshaft to the connecting rod bearings. To cool the pistons, oil is sprayed through nozzles onto the bottom of the pistons.
Through the channels, oil is supplied to the cylinder head for lubrication of the camshaft bearings and to the hydraulic tappets.
The engine is provided with oil drain using vacuum units.
The oil level indicator tube is adapted to fit a 14 mm diameter tip for draining oil using vacuum units.
It also retained the possibility of draining the oil through a hole in the bottom of the oil pan.
Replacing the oil filter on the TU3JP engine
Removing
Pic. 3.42. Engine oil filter TU3JP: 1 - latches; 2 - cover; 3 - sealing ring of the cover; 4 - replaceable filter element
Unscrew cover 2 (pic. 3.42) oil filter. Latches 1 are designed to hold the cover on the sleeve with a diameter of 27 mm in order to move the cover away from the catalytic converter without burning your hands.
Slide and remove cover 2.
Attention! When removing the oil filter, be careful not to get oil on the catalytic converter.
Remove the filter element from the cover.
Remove the sealing ring from the cover.
Installation
Clean the inside surfaces of the oil filter housing and cover.
Install a new o-ring on the cover.
Insert a new replacement filter element into the cap.
Install the cover assembly in place and screw it in, tightening it with a torque of 28 Nm.
Oil pan
The pressed sheet steel oil pan is secured with 19 bolts.
Pic. 3.43. Location of oil pan bolts not found on later engines
On later models, an oil pan is installed, which is attached with 13 bolts. On these engines, 6 threaded holes are missing in the crankcase of the main bearing caps 1 (pic. 3.43).
When installing a new oil pan model on an old engine model, unused threaded holes should be plugged with E10 sealant.
Oil pressure check
To check the pressure, use a manometer with hose and fitting.
Attention! Checking the engine oil pressure is carried out on a hot engine after checking the oil level.
Disconnect the connector from the oil pressure sensor.
Pic. 3.44. Sensor location (1) oil pressure
Unscrew sensor 1 (pic. 3.44) oil pressure.
Instead of the oil pressure sensor, screw in the pressure gauge fitting.
Connect a tachometer to the engine.
Start the engine.
Set the engine speed to 1000 min-1, determine the oil pressure in the engine using the pressure gauge and compare it with the technical data.
Measure the oil pressure in the same way at 2000, 3000 and 4000 rpm-1.
Stop the engine.
Disconnect the tachometer and pressure gauge from the engine.
Screw in the oil pressure sensor and tighten it to 30 Nm.
Connect the connector to the oil pressure sensor.