Audi A4, S4

since 2000 of release

Repair and car operation

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 actuated by a gear belt, camshafts of inlet valves are actuated by a chain from camshafts of final valves. At the V8 engine four camshafts, also as well as auxiliary units, are actuated by several chains. Driving chains are located from a flywheel (the check point party).

Block of cylinders, crankshaft and V6 engine flywheel

1 — the Cranked shaft Check axial люфта: 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: At check of 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, 60Нм+90 °. For measurement of a radial gap tighten a bolt effort no more 60Нм 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 60Нм+180 °), (a driving disk 60Нм+90 °). At an otdavaniye use the tool 3242 for blocking of a cranked shaft 7 — Loose leaves of radical bearings. Do not mix the removed loose leaves 8 — the Tight flange with an epiploon. It is replaced assembled. Before removal merge cooling liquid 9 — Laying. Replace 10 — the Bolt, 10Нм 11 — the Persistent washer of the block of cylinders, the bearing 4 12 — the Bolt, 25Нм. 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 a drive of GRM of the V6 engine

1 — the Bolt, 55Нм 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 movement of a belt. Check on wear. Do not bend 6 — the Top left cover of a gear belt 7, 8 — the Bolt, 25Нм 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, 25Нм 15 — the Arm 16 — Connection (the thermostat case) 17 — the Water pump 18 — the Oil pump

19 — the Head of cylinders 20 — the Case сапуна a case 21 — the Block of cylinders 22 — the Bolt, 45Нм 23 — the Arm 24 — the case Pallet 25 — the Directing roller 26 — the Bolt, 45 Nanometers 27 — a crankshaft Cogwheel 28 — the Bolt 200Нм+180 °, replace 29 — Natyazhitel of a belt 30 — the Bolt, 10Нм. Establish with D6 greasing 31 — a fan Pulley 32 — Bolt М8 - 25Нм, М6 - 10Нм 33 — the Cover of a gear belt 34 — the Bolt, 10Нм 35 — the Damper of krutilny fluctuations 36 — the Bolt, 25Нм

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, 10Нм 5 — the Back cover of a gear belt 6 — the Elevating eye 7 — the Bolt, 25Нм 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 laying replace 12 — the Arm 13 — the Six-sided nut, 10Нм. 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, 55Нм

Elements of a head of cylinders. V6 engine

1 — the Double cover of bearings. Slightly grease an interfaced surface with AV 174 004 01 greasing 2 — the Bolt, 10Нм 3 — Covers of bearings of a camshaft of final valves. Slightly grease 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: Palpation, no more: 0.01 mm Wear limit: 0.10 mm 5 — the Cap. Replace. For removal uncover the bearing. At the established cover of the bearing напрессуйте 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 — a camshaft Regulator. Before removal block by means of a clamp 3366 natyazhitel of a chain. Check camshaft adjustment 9 — the Driving chain. Before removal mark the movement direction 10 — the Bolt, 10Нм 11 — the Sealing ring. Replace 12 — the Valve 1 or 2 for adjustment of a camshaft of N205 or N208. Check camshaft adjustment

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 down a surface of contact to a camshaft cam 16 — Crackers of the cutting lock 17 — the Holder of a klapanny spring 18 — Klapannaya a spring 19 — Maslootrazhatelny a cap 20 — the Rod of a pusher of the valve 21 — the Head of cylinders 22 — Valves 23 — the Epiploon. Slightly grease epiploon sponges 24 — Zaslonka CMP 25 — the Conic washer 26 — the Bolt, 25Нм 27 — the Sensor of provision of a camshaft (CMP) 28 — the Bolt, 10Нм 29 — the Directing plug