Valve Timing: Description

WARNING: This page is about a different car, the 2005 Jeep Liberty. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Timing Drive System

Courtesy of DAIMLERCHRYSLER CORP.

1 - RIGHT CAMSHAFT SPROCKET AND SECONDARY CHAIN

2 - SECONDARY TIMING CHAIN TENSIONER (LEFT AND RIGHT SIDE NOT INTERCHANGEABLE)

3 - SECONDARY TENSIONER ARM

4 - LEFT CAMSHAFT SPROCKET AND SECONDARY CHAIN

5 - CHAIN GUIDE (LEFT AND RIGHT SIDE ARE NOT INTERCHANGEABLE)

6 - PRIMARY CHAIN

7 - IDLER SPROCKET

8 - CRANKSHAFT SPROCKET

9 - PRIMARY CHAIN TENSIONER

The timing drive system (See Fig 1) has been designed to provide quiet performance and reliability to support a non-free wheeling engine. Specifically the intake valves are non-free wheeling and can be easily damaged with forceful engine rotation if camshaft-to-crankshaft timing is incorrect. The timing drive system consists of a primary chain (6), two secondary timing chain drives (1,4) and a counterbalance shaft drive.