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.
Specifications General characteristics Engine code: 1896 cm 3 , direct injection, turbocharged, 66 kW 1Z, AHU Cylinder diameter: 1Z, AHU 79.5 mm Stroke: 1Z, AHU 95.9 mm...
Timing tags of gas distribution The sprockets of the crankshaft, camshaft and intermediate shaft are driven by the timing belt and rotate in phase. If the sprockets are out of phase, the...
Compression test If the engine runs poorly or intermittently, perform a compression test. Regularly carrying out this check will allow you to prevent the occurrence of...
Gas distribution belt Withdrawal 1. Disconnect the negative battery cable. 2. To remove the upper belt cover, unscrew the screws. 3. Take out the inserts and disconnect the latches....
Timing belt tensioner, sprockets Timing belt tensioner Withdrawal 1. Disconnect the negative battery cable. 2. Remove drive belts. 3. Set the N1 piston to TDC and remove the timing belt top...
Additional drive belts V-belt Withdrawal 1. Raise and secure the front of the vehicle. 2. Loosen the lock and fixing bolts of the power steering pump. 3. Loosen the pump pivot bolt...
Camshaft cover Withdrawal 1. Remove the top cover of the engine, disconnect the vent hoses of the control valve from the camshaft cover. 2. Tighten the camshaft cover nuts....
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 oil...
Intermediate shaft oil seal 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 gland, screw in the screws and remove the gland. 3. Clean...
Cylinder head Withdrawal 1. Disconnect the negative battery cable. 2. Drain the oil. 3. Drain the coolant. 4. Remove drive belts. 5. Remove plastic covers. 6. Tighten the...
Hydraulic pushers The pushers are automatically adjusted and do not require maintenance. Order of execution 1. To check the operation of the tappets, warm up the engine, turn it...
Removal and installation of a flywheel Withdrawal 1. On manual transmission models, remove the transmission and clutch. On automatic transmission models, remove the transmission. 2. Unscrew the...
Engine mounts Examination 1. Raise and secure the front of the vehicle. 2. Inspect rubber mounts for wear and damage and replace if necessary. 3. Check that the support...
Oil pan Withdrawal 1. Raise and secure the front of the vehicle. 2. Remove the bottom engine cover. 3. Drain the engine oil and remove the dipstick. 4. Mount the...