Workshop Manuals Factory service & repair Aston Martin
Aston Martin DB9 Factory Workshop Manual (Issue 2, 2005)04 · 03 Engine
04 · Engine

Description

Make
Aston Martin
Model
DB9 Factory Workshop Manual
Year
Issue 2, 2005
Section
Accessory Drive System › Description
03 EngineDescription

Description

Diagram of the accessory drive belt routing showing components: Alternator, Idler, Air Conditioning Compressor, Crankshaft, Tensioner, Power Steering Pump, Water Pump

Auxiliary Drives

A damper pulley installed to the front of the crankshaft drives a 'polyvee' drive belt to power all of the engine auxiliaries.

  • Air Conditioning Compressor
  • Alternator
  • Power Steering Pump
  • Water Pump

Automatic Belt Tensioner

The automatic belt tensioner consists of an idler pulley which is free to rotate on a bearing, located at the end of a spring-loaded pivot arm. The pivot arm can be turned clockwise (viewed from the front of the engine) for belt removal and installation.

Photograph of the engine front showing the automatic belt tensioner highlighted in cyan with an arrow pointing to it

Drive Belt

Repair Operation Time (ROT)
ItemCode
Drive Belt Renew03.05.AB

Removal

  1. Remove the undertray.
  2. Using a 3/8 inch ratchet handle 'T' bar, rotate the drive belt tensioner clockwise and slip the drive belt off the idler pulley indicated (A).
    Slip the drive belt off the remaining drive pulleys.
  3. Check condition of the drive belt. Replace if required.
Diagram showing a ratchet handle rotating the tensioner assembly clockwise to release belt tension

Installation

  1. Install the drive belt around all drive pulleys except the idler pulley.
  2. Rotate the tensioner assembly clockwise. Install the drive belt to the idler pulley and release the tensioner.
  3. Check all pulleys to ensure correct belt location.

Parts & tools for this job For 2005 Aston Martin DB9

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