In this section, information about the repair of units of gasoline 6-cylinder engines with a volume of 2.6 and 2.8 liters of Audi A6 cars. Engine factory codes: ABC and AAH.
Specifications General characteristics Engine code 2598 cm 3 , MPFI injection system, 110 kW ABC 2771 cm 3 , MPI injection system, 128 kW AAH Cylinder diameter 82.5 mm piston...
Toothed belt Warning: Incorrect installation of the toothed belt can cause very severe engine damage. If you lack experience, contact the workshop. Withdrawal 1. Remove the...
Cylinder head Remove the cylinder head only when the engine is cold (at room temperature). Do not disconnect the outlet pipe. The cylinder head can be removed without...
Removal and installation of valves Warning: Exhaust valves for 6-cylinder engines up to 174 hp. filled with sodium to improve heat dissipation. These valves should not be scrapped straight away,...
Replacement valve stem seals Worn valve stem seals cause high engine oil consumption. The valve stem seals can also be removed with the cylinder head installed. To do this, first of all,...
Checking the valve guides When repairing engines with leaky valves, it is not enough to just remake or replace the valves. In addition, the valve guides should be checked for wear...
Seat / valve seat finishing Inlet valve seat Exhaust valve seat Valve dimensions Valve seats with signs of wear or combustion effects may be remachined as long as the maximum allowable...
Lapping of valve seats With perfectly machined valve seats and new valves, lapping of the valve seats in the cylinder head is not necessary. Valves may only be lapped using...
Compression test Compression check allows you to draw conclusions about the condition of the engine. Namely, when checking, it is possible to establish whether valves and...
V-ribbed belt Withdrawal 1. Remove the V-ribbed belt cover. To do this, unscrew the 2 bolts SW 10 and unfasten the casing from the screen of the ignition coils. 2. Engine...
Lubrication system Lubrication system for 6-cylinder engine 1. Bolt, 10 Nm 2. Bolt, 10 Nm 3. Oil pan, top 4. Oil pan, bottom 5. Bolt, 10 Nm 6. Nut, 30 Nm 7. Bolt, 10 Nm 8. Drain...
Oil pump Withdrawal 1. The oil pump is located in front of the cylinder block and is driven by the crankshaft. 2. Remove poly V-belt. 3. Remove the toothed belt....