5 cylinder car engines Audi A6 C4

Information on the installation and repair of parts and assemblies of 5-cylinder diesel engines with volumes of 2.4 and 2.5 liters with a capacity of 87, 115 and 140 hp. Engine factory codes: AAS, ABP, AAT and AEL.

Engine specifications
General characteristics Engine code: 2370cc, direct injection, normal suction, 64 kW AAS 2460cc, direct injection, turbocharger, 85kW ABP, AAT 2460cc, direct...

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...

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...

Gas distribution belt
Removal 1. Disconnect the negative battery cable. 2. Raise and support the front of the vehicle. 3. Remove the front bumper. 4. Remove the headlight screws and...

Fuel pump drive belt
Removal 1. Remove the rear engine cover. 2. Unscrew the spark plugs. 3. Set piston N1 to TDC. ABP, AAT, AEL 1. Loosen the tensioner nut. 2. Remove the belt....

Timing Belt Tensioner and Sprockets
Removal 1. Remove the timing belt. 2. Remove the bolts and tensioner. Installation 1. Install the tensioner. On later models, the tensioner plate should fit...

Additional drive belt
Additional drive belt Removal 1. Raise and support the front of the vehicle. 2. Remove the bumper and headlights, disconnect the cable from the hood lock and...

Camshaft cover
Removal 1. Remove the upper engine cover. Disconnect any hoses, wires, or components that interfere with removal from the camshaft cover. On an AAT engine,...

Camshaft oil seals
Front oil seal 1. Remove the camshaft sprocket and take out the old oil seal. 2. Place the new seal on the shaft. 3. Hammer the seal into place. Rear oil seal...

Crankshaft seals
Front oil seal 1. Remove the timing belt and crankshaft sprocket. 2. Place the new oil seal onto the crankshaft. 3. Hammer the seal into place. Rear oil seal...

Cylinder head
Cylinder Head Gasket Identification Holes (AAT) Mounting pins (AAT) Removal 1. Disconnect the negative battery cable. 2. Remove the plastic covers. 3. Unscrew...

Hydraulic tappets
The pushers are automatically adjusted and require no maintenance. To check the operation of the tappets, warm up the engine, turn it off and remove the...

Removal and installation the flywheel
Removal 1. On manual transmission models, remove the transmission and clutch. 2. On models with automatic transmission, remove the transmission. 3. 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...

Oil pan
Removal 1. Raise and support the front of the vehicle. 2. Remove the dipstick and remove the lower engine shield. 3. Drain the oil. 4. Place a jack under the...

Oil pump and oil intake pipe
Removal 1. Remove the timing belt and crankshaft sprocket. 2. Remove the oil pan. 3. Remove the ventilation duct at the rear of the unit. 4. Remove the oil...

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A6(C5 AR, 1999-2005)

A6(C5, 1997-2004)

A6(C4, 1994-1997)