Description - Timing Drive System

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

The timing drive system 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 and two secondary timing chain drives. See Fig 1.

Fig 1: Timing Drive System Components

Courtesy of DAIMLERCHRYSLER CORP.

1 - RIGHT CAMSHAFT SPROCKET AND SECONDARY CHAIN

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

3 - SECONDARY TENSIONER ARM

4 - LEFT CAMSHAFT SPROCKET AND SECONDARY CHAIN

5 - CHAIN GUIDE

6 - TWO PLATED LINKS ON RIGHT CAMSHAFT CHAIN

7 - PRIMARY CHAIN

8 - IDLER SPROCKET

9 - CRANKSHAFT SPROCKET

10 - PRIMARY CHAIN TENSIONER

11 - TWO PLATED LINKS ON LEFT CAMSHAFT CHAIN

12 - SECONDARY TENSIONER ARM