Audi A4, S4

since 2000 release

Repair and operation of the car

6-and 8-cylinder petrol engines

Main data

Engines have three inlet and two final valves on the cylinder. Each number of cylinders of the engine has on 2 camshafts. At the V6 engine camshafts of final valves are set in motion by a gear belt, camshafts of inlet valves are set in motion by a chain from camshafts of final valves. At the V8 engine four camshafts, also as well as auxiliary units, are set in motion by several chains. Driving chains are located from a flywheel (the party of a check point).

Block of cylinders, crankshaft and flywheel of the V6 engine

1 — the Cranked shaft Check of an axial side play: The new: 0.07 - 0.23 mm Wear limit: 0.25 mm Check of a radial gap by means of Plastigage: 0.018 - 0.045 mm Wear limit: 0.10 mm Attention: When checking a radial gap do not rotate a cranked shaft. 2 — the Cover of the radical bearing 4 with dredging for a persistent washer 3 — the Bolt. Replace, 60nm+90 °. For measurement of a radial gap tighten a bolt by effort no more 60nm 4 — the Persistent washer of the radical bearing 4 5 — the Flywheel / the Driving disk

6 — a flywheel Bolt / a driving disk. Replace, (a flywheel 60nm+180 °), (a driving disk 60nm+90 °). At an otdavaniye use the tool 3242 for blocking of a cranked shaft 7 — Inserts of radical bearings. Do not mix the removed inserts 8 — the Tight flange with an epiploon. It is replaced assembled. Before removal merge cooling liquid 9 — Laying. Replace 10 — the Bolt, 10nm 11 — the Persistent washer of the block of cylinders, the bearing 4 12 — the Bolt, 25nm. Previously tighten by hand before tightening bolts of a cover of the radical bearing 13 — the Block of cylinders 14 — the Directing plug

Basic elements of the GRM drive of the V6 engine

1 — the Bolt, 55nm 2 — Natyazhitel of a gear belt. Before removal block by means of the tool 3204 3 — the Top right cover of a gear belt 4 — the Central right cover of a gear belt 5 — the Gear belt. Before removal mark the direction of the movement of a belt. Check for wear. Do not bend 6 — the Top left cover of a gear belt 7, 8 — the Bolt, 25nm 9 — the Washer 10 — the bearing Plug 11 — the Tension roller of a gear belt 12 — the Tension lever 13 — the Sealing ring 14 — the Bolt, 25nm 15 — the Arm 16 — Connection (the thermostat case) 17 — the Water pump 18 — the Oil pump

19 — the Head of cylinders 20 — the Case of a sapun of a case 21 — the Block of cylinders 22 — the Bolt, 45nm 23 — the Arm 24 — the case Pallet 25 — the Directing roller 26 — the Bolt, 45 Nanometers 27 — a crankshaft Cogwheel 28 — the Bolt 200nm+180 °, replace 29 — Natyazhitel of a belt 30 — the Bolt, 10nm. Establish with D6 greasing 31 — a fan Pulley 32 — M8 Bolt - 25nm, M6 - 10nm 33 — the Cover of a gear belt 34 — the Bolt, 10nm 35 — the Damper of tortional fluctuations 36 — the Bolt, 25nm

Chain drive of a cam-shaft of inlet valves. V6 engine

1 — the Top right cover of a gear belt 2 — the Central right cover of a gear belt 3 — the Top left cover of a gear belt 4 — the Six-sided nut, 10nm 5 — the Back cover of a gear belt 6 — the Lifting eye 7 — the Bolt, 25nm 8 — Laying of a cover of a head of cylinders. At damage replace. Before installation grease a laying surface between a cover of the bearing and a head of cylinders A3 greasing D 454 300 9 — the Cover of a head of cylinders

10 — Laying 11 — the Cover. At damage replace laying 12 — the Arm 13 — the Six-sided nut, 10nm. Tighten in the direction from the center outside 14 — the Bolt of a head of cylinders. Replace 15 — the Head of cylinders. Check planeness 16 — Maslootrazhatel 17 — Laying of a head of cylinders (metal). Replace 18 — the Cogwheel of a cranked shaft 19 — the Tightening plate 20 — the Bolt, 55nm

Elements of a head of cylinders. V6 engine

1 — the Double cover of bearings. Slightly grease the interfaced surface with AV 174 004 01 greasing 2 — the Bolt, 10nm 3 — Covers of bearings of a camshaft of final valves. Slightly grease the interfaced surfaces of extreme (external) bearings with AV 174 004 01 greasing 4 — the Camshaft of final valves. Check of a radial gap by means of Plastigage: Beating, no more: 0.01 mm Wear limit: 0.10 mm 5 — the Cap. Replace. For removal uncover the bearing. At the napressuyta established to a bearing cover by means of the tool 3202 and a plastic hammer 6 — Covers of bearings of a camshaft of inlet valves 7 — the Camshaft of final valves 8 — the camshaft Regulator. Before removal block 3366 natyazhitel of a chain by means of a clamp. Check adjustment of a camshaft 9 — the Driving chain. Before removal mark the direction of the movement 10 — the Bolt, 10nm 11 — the Sealing ring. Replace 12 — the Valve 1 or 2 for adjustment of a camshaft of N205 or N208. Check adjustment of a camshaft

13 — Laying (rubber/metal). Replace 14 — the Segment insert. Replace 15 — the Hydraulic pusher of the valve. Do not interchange the position of pushers of different valves. Store a surface of contact with a camshaft cam down 16 — Crackers of the cutting lock 17 — the Holder of a valvate spring 18 — the Valvate spring 19 — the Maslootrazhatelny cap 20 — a valve pusher Rod 21 — the Head of cylinders 22 — Valves 23 — the Epiploon. Slightly grease epiploon sponges 24 — the CMP Gate 25 — the Conic washer 26 — the Bolt, 25nm 27 — the Sensor of provision of a camshaft (CMP) 28 — the Bolt, 10nm 29 — the Directing plug