Part 1

Tightening torques, tightening sequences, assembly overviews for V8 4.8 l DFI naturally aspirated and turbo engine as of October 2008






























































Information

Component changes for model year 2009 as of October 2008

Information
Always read the information concerning modified tightening specifications and component changes relating to repairs provided for specific engine numbers in the Information section!

Overview

Information
The tightening steps in the tightening sequences relate to tightening screws uniformly, i.e. all affected screws must first be tightened uniformly to the first torque value, then all screws are tightened one stage further, and so on.
Replace all O-rings following removal!

The torques in the table below generally apply to screws that are not specifically listed -

The bolt quality is indicated on the screw head at the top as a decimal number, e.g. "8.8" or "12.9".





Aluminum screws









Decoupling module (fastening part); observe correct tightening sequence
Tightening sequence for intake module (shown on M48/01) valid for M48/01 and M48/51
Tightening torque 15 Nm (11 ftlb.)±1.5 Nm (±1.0 ftlb.)

Drive plate M10
Tighten the 10 new fastening screws crosswise
Tightening torque 60 Nm(44 ftlb.)
Torque angle 90°