REP-TAT-P-1131-02 Installing the timing chains

WARNING: This page is about a different car, the 2018 BMW 340i, 2017 BMW 340i, and 2016 BMW 340i. However, it is still accessible from the selected car via links, so may be relevant.

Position the bottom timing chain (1).
Position the crankshaft using special tool 2 357 904 and secure the special tool 2 357 904 with the screw (2).
Make sure the special tool 2 357 904 is correctly installed on the guide pin of the crankshaft and on the guide bushing of the crankcase.

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Insert the camshaft sprocket (2) into the timing chain and position it on the crankcase.
Tighten down screw (1).

TIGHTENING TORQUES SPECIFICATION

Sprocket wheel at the crankcase
Clean thread.	108 Nm

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Replace the bearing journals (1) and (3).
Parts : Bearing journal
Position the guide rail (4) and screw in the bearing journals (3).

Tightening torques

Bearing journal to crankcase
Replace bearing journal. Clean thread.	20 Nm

Position the tensioning rail (2) and screw in the bearing journal (1).

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TIGHTENING TORQUES SPECIFICATION

Bearing journal to crankcase
Replace bearing journal. Clean thread.	20 Nm

Remove oil and contamination from the sealing surfaces of the chain tensioner (2).
Position the chain tensioner (2) and secure with the screws (1).

TIGHTENING TORQUES SPECIFICATION

Bottom chain tensioner to crankcase
M6 x 22 Clean thread.	9 Nm

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Secure the chain tensioner piston (1) with a screwdriver (2).
Remove special tool 0 491 012 (11 4 120) and slowly remove the screwdriver (2).
Remove special tool 2 357 904 .

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Install the tensioning rail (2).
Install the top timing chain (1).

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Install the chain (1) for the oil pump.

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