Removal and reassembly of the car engine Audi A6 C4
This subsection deals with engine overhaul operations, including cylinder head and cylinder block parts. The subsection includes both recommendations concerning both the organization and preparation of engine overhaul work, the purchase of spare parts, and a detailed description of the procedures for dismantling and installing engine parts, as well as methods for checking the technical condition of parts.
The following subsections assume that repairs are carried out after the power unit has been removed from the vehicle. The above technical data is only needed to check the technical condition of the parts in the repair procedures described below.
Engine codes and their specifications
4-cylinder petrol engines 1781 cm³, Bosch Motronic 3.2 injection system, 92 kW ADR 1984 cm³, Bosch Mono-Motronic injection system, 74 kW AAE 1984 cm³, Bosch...
4-cylinder petrol engines 1781 cm³, Bosch Motronic 3.2 injection system, 92 kW ADR 1984 cm³, Bosch Mono-Motronic injection system, 74 kW AAE 1984 cm³, Bosch...
Tightening torques for threaded connections
Tightening torques, Nm ADR engine Bolts securing the air compressor drive belt tensioner air conditioner 20 Bolts securing the generator to the cylinder head...
Tightening torques, Nm ADR engine Bolts securing the air compressor drive belt tensioner air conditioner 20 Bolts securing the generator to the cylinder head...
Repair work possible without dismantling the engine
Many basic repairs can be performed without removing the engine from the vehicle. Before starting any work, it is highly advisable to wash the engine...
Many basic repairs can be performed without removing the engine from the vehicle. Before starting any work, it is highly advisable to wash the engine...
General notes on major repairs
It is not always easy to come to a conclusion about the advisability of an engine overhaul, since it is necessary to rely on a number of indicators. High...
It is not always easy to come to a conclusion about the advisability of an engine overhaul, since it is necessary to rely on a number of indicators. High...
Options for carrying out major repairs
When performing a major overhaul on your own, there are various options. The decision to replace the cylinder block, connecting rod and piston group, and...
When performing a major overhaul on your own, there are various options. The decision to replace the cylinder block, connecting rod and piston group, and...
Engine dismantling
If a decision has been made to dismantle the engine for major repairs or repairs of the main components, then certain preparatory measures must be carried out....
If a decision has been made to dismantle the engine for major repairs or repairs of the main components, then certain preparatory measures must be carried out....
Engine disassembly sequence
The easiest way to disassemble the engine and perform all types of work is on a portable stand. Before installing the engine on the stand, it is necessary to...
The easiest way to disassemble the engine and perform all types of work is on a portable stand. Before installing the engine on the stand, it is necessary to...
Removal and installation the engine
Removal Petrol engines 1. Raise and support the front of the vehicle. 2. Remove the hood. 3. Disconnect the negative battery cable. 4. Drain the oil and...
Removal Petrol engines 1. Raise and support the front of the vehicle. 2. Remove the hood. 3. Disconnect the negative battery cable. 4. Drain the oil and...
Engine overhaul
Carry out engine overhaul in a clean, specially equipped place. It is necessary to prepare all the necessary tools and take safety precautions during this...
Carry out engine overhaul in a clean, specially equipped place. It is necessary to prepare all the necessary tools and take safety precautions during this...
Overhaul and cleaning of the cylinder head
Cylinder head (ADR) 1. Camshaft sprocket bolt 2. Camshaft sprocket 3. Seal 4. Head 5. Valve stem seal 6. Valve spring 7. Spring seat 8. Conical bushings 9....
Cylinder head (ADR) 1. Camshaft sprocket bolt 2. Camshaft sprocket 3. Seal 4. Head 5. Valve stem seal 6. Valve spring 7. Spring seat 8. Conical bushings 9....
Checking and assembling the cylinder head
Examination Cylinder head 1. Carefully inspect the head surfaces for cracks and damage. If any damage is found, contact a specialist. 2. Using a ruler and...
Examination Cylinder head 1. Carefully inspect the head surfaces for cracks and damage. If any damage is found, contact a specialist. 2. Using a ruler and...
Pistons and connecting rods
Piston and connecting rod 1. Piston rings 2. Piston 3. Piston pin 4. Retaining ring 5. Connecting rod 6. Connecting rod bearing 7. Cylinder block 8. Connecting...
Piston and connecting rod 1. Piston rings 2. Piston 3. Piston pin 4. Retaining ring 5. Connecting rod 6. Connecting rod bearing 7. Cylinder block 8. Connecting...
Removal and checking the crankshaft
Crankshaft assembly (aAN, AAR engines) 1. Oil receiver tube 2. Bolt, 10 Nm 3. Locking plate 4. Gasket 5. Bolt, 10 Nm 6. Main bearing caps 7. Bolt, 65 Nm 8....
Crankshaft assembly (aAN, AAR engines) 1. Oil receiver tube 2. Bolt, 10 Nm 3. Locking plate 4. Gasket 5. Bolt, 10 Nm 6. Main bearing caps 7. Bolt, 65 Nm 8....
Installing and checking the crankshaft
Installing main bearing shells A - slot B - protrusion on the insert C - lubrication hole 1. Install new main bearing shells. 2. Install the thrust half rings....
Installing main bearing shells A - slot B - protrusion on the insert C - lubrication hole 1. Install new main bearing shells. 2. Install the thrust half rings....
Intermediate shaft
Removal 1. Remove the timing belt and intermediate shaft sprocket. 2. Measure the free play of the shaft. Replace the shaft if necessary. 3. Remove the shaft...
Removal 1. Remove the timing belt and intermediate shaft sprocket. 2. Measure the free play of the shaft. Replace the shaft if necessary. 3. Remove the shaft...
Cylinder block
Cleaning 1. Disconnect all external parts and sensors from the block. Unscrew the piston oil jets. 2. Remove the eye for mounting the lifters. 3. Remove the...
Cleaning 1. Disconnect all external parts and sensors from the block. Unscrew the piston oil jets. 2. Remove the eye for mounting the lifters. 3. Remove the...
Main and connecting rod bearings
Causes of bearing wear 1. Reduction of the metal's tensile strength, jagged scratches 2. Incorrectly planted; bright (polished) stripes 3. Scratched with dirt;...
Causes of bearing wear 1. Reduction of the metal's tensile strength, jagged scratches 2. Incorrectly planted; bright (polished) stripes 3. Scratched with dirt;...
Installing piston rings
1. Before installation, it is necessary to check the end and side clearances of the piston rings. 2. Install the upper compression ring into the cylinder using...
1. Before installation, it is necessary to check the end and side clearances of the piston rings. 2. Install the upper compression ring into the cylinder using...
First engine start after overhaul
Execution order 1. Without installing the spark plugs, crank the engine with the starter until the oil pressure warning light goes out. 2. Install the spark...
Execution order 1. Without installing the spark plugs, crank the engine with the starter until the oil pressure warning light goes out. 2. Install the spark...
This section is available on russian, bulgarian, belarusian, ukrainian, serbian, croatian, romanian, polish, slovak, hungarian
Similar sections of other Audi car models:
General information: Repair characteristics Audi 80 B3 (1986-1991)
5 cylinder engine: Engine repair Audi 100 C3 (1982-1990, petrol)
Power unit: Engine overhaul Audi A4 B5 (1994-2001)
General information: Repair characteristics Audi 80 B3 (1986-1991)
5 cylinder engine: Engine repair Audi 100 C3 (1982-1990, petrol)
Power unit: Engine overhaul Audi A4 B5 (1994-2001)
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