Examination
Check the engine oil level and top up if necessary.
Warm up the engine to normal operating temperature (80°C).
Disconnect the electrical connector from the oil pressure sensor.
Unscrew sensor A from the oil filter holder (pic. 2.91) oil pressure and screw it into the pressure gauge. On V6 petrol engines, the oil pressure sensor is screwed into the oil pan.
Screw the pressure gauge adapter in place of the oil pressure gauge into the oil filter holder.
Connect wire 3 to vehicle ground (pic. 2.91) grounding pressure gauge VAG 1342.
Using additional wires, connect the control LED to the positive terminal of the battery and the contact of the oil pressure sensor.
Petrol engines:the LED should be on.
Diesel engines: the LED should not light up.
Start the engine and gradually increase the engine speed.
Petrol engines: at a pressure of 1.2-1.6 bar the LED should light up.
Diesel engines:at a pressure of 0.75-1.05 bar the LED should go out.
Otherwise, the oil pressure sensor is faulty.
Increase the engine speed to 2,000 rpm. At an oil temperature of +80°C, the oil pressure must be at least 2.0 bar (for 125 hp engine - 4.5 bar). The gasoline engine has 150 hp. at 3,000 rpm, the oil pressure should be 3.0-5.0 bar.
Less oil pressure indicates worn crankshaft bearings.
Diesel engine V6: with a further increase in speed, the oil pressure must not exceed 7.0 bar. Otherwise, the bypass valve has failed and the oil pump cover must be replaced.
Reinstall the oil pressure switch with a new O-ring and tighten to 25 Nm.
Connect the electrical connector to the oil pressure sensor.
Pic. 2.92. Oil pump and oil pan for 1.8-I/125 HP engine
1 - asterisk,
To drive the oil pump.
2 - bolt, 10 Nm,
3 - oil pump drive chain,
Before removal, note the direction of rotation of the chain.
4 - centering bushings,
The relative position of the oil pump and cylinder block is determined.
5 - bolt, 15 Nm,
6 - bolt, 30 Nm,
7 - torque compensator support,
8 - bolt, 40 Nm,
9 - asterisk,
10 - chain tensioner,
Doesn't understand. If the spring breaks, it must be replaced.
11 - front cover,
When installing on the mating surface, AUDI-D176404A2 sealant must be applied.
12 - bolt, 15 Nm,
13 - suction pipe support,
14 - bolt, 20 Nm,
15 - frame,
When installing on the mating surface, AUDI-D176404A2 sealant must be applied.
When installing the frame, make sure that the frame protrudes 0.8 mm towards the gearbox in relation to the cylinder block.
16 - bolt, 40 Nm,
17 - wave damper,
18 - bolt, 15 Nm,
19 - bolt, 10 Nm,
20 - oil receiver,
If dirty, clean the strainer.
21 - sealing ring,
22 - oil pan gasket, 23-bolt, 15 Nm,
Tighten the bolts crosswise in several stages.
24 - oil drain plug, 30 Nm,
25 - sealing ring,
When installing, a new O-ring must be used.
26 - oil pan,
27 - bolt, 15 Nm,
28 - oil pump.
Maximum pressure 12 bar.
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