6-cylinder car engine BMW 3 Series E46

Technical data
General information Engine codes: Engine 2171 cm³ — M54 B22 Engine 2494 cm³ — M52TU B25 Engine 2494 cm³ — M54 B25 Engine 2793 cm³ — M52TU B28 Engine 2979 cm³ —...

Tightening force of connections, Nm
Automatic transmission to engine mounting bolts Hex Head Bolts: M8 - 24 M10 - 45 M12 - 82 Slotted head bolts: M8 - 21 M10 - 42 M12 - 72 Connecting rod lower...

General information
How to use the information in this chapter This part of Chapter 2 describes the types of repair work that can be performed without removing the engine from the...

Compression Test — Description and Analysis of Results
1. When engine performance deteriorates or when there are interruptions in its operation, the cause of which cannot be attributed to the ignition system or...

Setting the engine to the top dead center position of piston No. 1
Note. To fix the engine in the TDC position, to reset the valve timing adjusters and to check the correct position of the camshafts, special devices are...

Cylinder Head Cover — Removal and Installation
Note: New seals and gasket may be required during installation - see text. Removal 1. To provide sufficient space, remove the air intake duct for the interior...

Crankshaft pulley and vibration damper — removal and installation
Note: If you remove the pulley hub, you will need to replace the mounting bolt when installing it. You will also need a torque wrench capable of creating a...

Timing Chain Cover — Removal and Installation
Note: When installing you will need: new cover gaskets, crankshaft seal and PTU sealant - see text. Removal 1. Drain the coolant ( see chapter 1 ). 2. Remove...

Timing chains — removal, inspection and installation
Secondary circuit Removal 1. Remove the valve timing adjuster as described in paragraph 9. 2. On the right side of the engine, unscrew the tensioner plunger...

Sprockets and chain tensioners — removal, inspection and installation
Camshaft Sprockets 1. Removal, inspection and installation of sprockets is described in paragraph 7 as part of the secondary chain removal and installation...

Valve timing control (VANOS) components — removal, inspection and installation
VANOS regulator unit Note: The valve timing adjuster is located on the ends of the camshafts on the front side of the engine. Removal 1. Remove the cooling...

Camshafts and tappets — removal, inspection and installation
Attention! To perform this operation, you will need the BMW 113 360 tool. It is extremely difficult to make such a tool yourself due to its complex design and...

Cylinder head — removal and installation
Note: When installing the cylinder head, replace the gasket and bolts. Removal 1. Drain the coolant ( see chapter 1 ). 2. Remove the intake and exhaust...

Pallet — removal and installation
Note: Installation will require a new gasket, new dipstick tube seal and sealant. Removal 1. Remove the engine crankcase guard from under the engine. Drain the...

Oil pump and its drive chain — removal, inspection and installation
Oil pump Note: During installation, it will be necessary to replace the oil pickup pipe sealing rings and the pressure relief valve plugs, as well as the...

Cuffs — replacement
Front crankshaft oil seal 1. The procedure for replacing this seal is described in paragraph 6 as part of the timing chain cover removal and installation...

Flywheel (faceplate) — removal and installation
Note: To install the flywheel (faceplate) in place, you will need new bolts and thread locking compound. Removal 1. Remove the transmission as described in...

Crankshaft End Bearing — Replacement
1. On models with a manual transmission, there is a ball bearing in the crankshaft tailpiece, on which the free end of the gearbox input shaft rests (Fig....

Power Block Supports — Inspection and Replacement
Inspection 1. The engine has two supports - on both sides. 2. If better access to the supports is required, raise the front of the vehicle and support it...

Oil pressure, level and temperature sensors — removal and installation
Oil pressure alarm sensor 1. Unscrew the oil filter cap - this will allow the oil from the filter to drain into the pan and reduce oil loss when replacing the...

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