4 cylinder car engines Audi A6 C4
This section describes the repair procedures for the 4-cylinder in-line diesel engines of Audi A6 cars with one camshaft and water cooling and a volume of 1.9 liters. Engine factory codes: 1Z, AHU.
Technical specifications
General characteristics Engine code: 1896 cm³, direct injection, turbocharging, 66 kW 1Z, AHU Cylinder diameter: 1Z, AHU 79.5 mm Piston stroke: 1Z, AHU 95.9 mm...
General characteristics Engine code: 1896 cm³, direct injection, turbocharging, 66 kW 1Z, AHU Cylinder diameter: 1Z, AHU 79.5 mm Piston stroke: 1Z, AHU 95.9 mm...
Timing marks for valve timing
The crankshaft, camshaft and intermediate shaft sprockets are driven by the timing belt and rotate in phase. If the sprockets are out of phase, the valves will...
The crankshaft, camshaft and intermediate shaft sprockets are driven by the timing belt and rotate in phase. If the sprockets are out of phase, the valves will...
Compression check
If the engine runs poorly or intermittently, perform a compression test. Regularly performing this test will allow you to prevent malfunctions in advance. To...
If the engine runs poorly or intermittently, perform a compression test. Regularly performing this test will allow you to prevent malfunctions in advance. To...
Gas distribution belt
Removal 1. Disconnect the negative battery cable. 2. To remove the top belt cover, unscrew the screws. 3. Remove the inserts and disconnect the latches. 4....
Removal 1. Disconnect the negative battery cable. 2. To remove the top belt cover, unscrew the screws. 3. Remove the inserts and disconnect the latches. 4....
Timing belt tensioner, sprockets
Timing Belt Tensioner Removal 1. Disconnect the negative battery cable. 2. Remove the drive belts. 3. Set piston N1 to TDC and remove the upper timing belt...
Timing Belt Tensioner Removal 1. Disconnect the negative battery cable. 2. Remove the drive belts. 3. Set piston N1 to TDC and remove the upper timing belt...
Additional drive belts
V-belt Removal 1. Raise and support the front of the vehicle. 2. Loosen the power steering pump retaining and mounting bolts. 3. Loosen the pump pivot bolt and...
V-belt Removal 1. Raise and support the front of the vehicle. 2. Loosen the power steering pump retaining and mounting bolts. 3. Loosen the pump pivot bolt and...
Camshaft cover
Removal 1. Remove the top engine cover, disconnect the ventilation hoses and the control valve from the camshaft cover. 2. Remove the camshaft cover nuts. 3....
Removal 1. Remove the top engine cover, disconnect the ventilation hoses and the control valve from the camshaft cover. 2. Remove the camshaft cover nuts. 3....
Camshaft oil seal
Replacement 1. Remove the intermediate and camshaft sprockets. 2. Remove the camshaft cover. 3. Remove the first camshaft bearing cap and remove the old seal....
Replacement 1. Remove the intermediate and camshaft sprockets. 2. Remove the camshaft cover. 3. Remove the first camshaft bearing cap and remove the old seal....
Intermediate shaft seal
Replacement 1. Remove the intermediate shaft sprocket. 2. Remove the shaft flange and replace the seals.
Replacement 1. Remove the intermediate shaft sprocket. 2. Remove the shaft flange and replace the seals.
Crankshaft seals
Front crankshaft oil seal Replacement 1. Remove the crankshaft sprocket. 2. Drill two holes in the seal, screw in the screws and remove the seal. 3. Clean the...
Front crankshaft oil seal Replacement 1. Remove the crankshaft sprocket. 2. Drill two holes in the seal, screw in the screws and remove the seal. 3. Clean the...
Cylinder head
Removal 1. Disconnect the negative battery cable. 2. Drain the oil. 3. Drain the coolant. 4. Remove the drive belts. 5. Remove the plastic covers. 6. Unscrew...
Removal 1. Disconnect the negative battery cable. 2. Drain the oil. 3. Drain the coolant. 4. Remove the drive belts. 5. Remove the plastic covers. 6. Unscrew...
Hydraulic tappets
The pushers are automatically adjusted and require no maintenance. Execution order 1. To check the operation of the tappets, warm up the engine, turn it off...
The pushers are automatically adjusted and require no maintenance. Execution order 1. To check the operation of the tappets, warm up the engine, turn it off...
Removal and installation the flywheel
Removal 1. On manual transmission models, remove the transmission and clutch. On models with automatic transmission, remove the transmission. 2. Unscrew the...
Removal 1. On manual transmission models, remove the transmission and clutch. On models with automatic transmission, remove the transmission. 2. Unscrew the...
Engine mounts
Examination 1. Raise and support the front of the vehicle. 2. Inspect the rubber shock absorbers of the supports for wear and damage; replace them if...
Examination 1. Raise and support the front of the vehicle. 2. Inspect the rubber shock absorbers of the supports for wear and damage; replace them if...
Oil pan
Removal 1. Raise and support the front of the vehicle. 2. Remove the lower engine shield. 3. Drain the engine oil and remove the dipstick. 4. Secure the engine...
Removal 1. Raise and support the front of the vehicle. 2. Remove the lower engine shield. 3. Drain the engine oil and remove the dipstick. 4. Secure the engine...
Oil pump and oil intake pipe
Oil pump 1. Drain plug of the tray 2. Washer 3. Pan bolts 4. Tray gasket 5. Oil intake pipe bolts 6. Oil intake pipe 7. Sealing ring 8. Oil jet screw 9. Oil...
Oil pump 1. Drain plug of the tray 2. Washer 3. Pan bolts 4. Tray gasket 5. Oil intake pipe bolts 6. Oil intake pipe 7. Sealing ring 8. Oil jet screw 9. Oil...
This section is available on russian, bulgarian, belarusian, ukrainian, serbian, croatian, romanian, polish, slovak, hungarian
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