Car engine repair Audi 100 C3, diesel

Specifications of the diesel engine in the engine compartment
Main characteristics Engine code: 1986 cc 3 indirect injection, non-turbo 51kW - CN 1986 cc 3 indirect injection turbocharged 66kW - DE 1986 cc 3 indirect...

General description
About section All procedures are described with the engine still in the vehicle. If the engine has been removed for overhaul, ignore the additional information...

Valve timing marks — general description and use
General description 1. The camshaft and water pump are driven by a toothed belt from the crankshaft. The camshaft and crankshaft sprockets rotate in harmony,...

Cylinder compression check
Compression test Note: Use a special compression tester designed for diesel engines. 1. If the engine does not develop full power or runs unevenly, and the...

Toothed drive belt — removal, inspection and installation
Withdrawal 1. The primary function of the timing belt is to drive the camshaft, but it is also used to drive the water pump. The fuel pump is driven from the...

Fuel pump drive belt — removal, inspection and installation
Withdrawal 1. Loosen the cover bolts located on the back of the engine to gain access to the fuel pump drive belt. 2. Remove the glow plugs to make turning the...

Mechanism for tensioning the toothed drive belt and sprocket — removal and installation
Toothed belt tensioner Withdrawal 1. Disconnect the negative cable from the battery. 2. Apply the handbrake, then jack up the front of the vehicle and place it...

Auxiliary drive belt — removal, installation and tension
1. Auxiliary belt drives the alternator and power steering pump. On air-conditioned models, it also drives the compressor. The belt is equipped with a...

Camshaft cover — removal and installation
Withdrawal 1. Remove the top plastic engine cover (where available), then disconnect the crankcase breather hose and oil separator hoses from the camshaft...

Camshaft seals — replacement
Front oil seal 1. Remove the auxiliary drive belt, referring to Chapter 7 . 2. Remove the timing belt tensioner and camshaft sprocket ( see chapter 6 ). 3....

Crankshaft seals — replacement
Front crankshaft oil seal 1. Remove toothed drive belt and crankshaft sprocket ( see chapter 6 ). 2. The oil seal can be replaced without removing the oil pump...

Cylinder head — removal, inspection and installation
Note: Cylinder head reassembly is described in Section 1B . Withdrawal 1. Disconnect the negative cable from the battery. 2. Remove the engine top cover and...

Pushers — checking and adjusting gaps
NC, 3D and 1T motors Check of serviceability of hydraulic pushers Warning: After installing the hydraulic tappets, wait at least 30 minutes, then slowly crank...

Flywheel / Drive Disc — Removal, Inspection and Installation
Withdrawal 1. On manual transmission models, remove the transmission ( see Section 6 ) and grip ( see Section 5 ). 2. On models with automatic transmission,...

Engine mounts — inspection and replacement
Inspection 1. Jack up the front of the vehicle and place it securely on axle stands, then remove the engine compartment bottom shield. 2. Inspect the rubber...

Pallet — removal, inspection and installation
Withdrawal 1. Apply the handbrake, then jack up the front of the vehicle and place it on axle stands. 2. Turn off bolts and remove from under the engine the...

Oil pump and its receiving tube — removal, inspection and installation
Withdrawal 1. Remove the toothed drive belt and crankshaft sprocket as described in Chapter 6 . 2. Remove the pallet as described in Chapter 15 . 3. Unscrew...

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