Valve timing adjustment mechanism parts (Discovery 3)

Item name	Spare part catalog number	Description
A	-	Front of the engine
1	-	Left camshaft drive assembly
2	-	Right camshaft drive assembly
3	-	Spacer
4	-	Intermediate shaft sprocket
5	-	Chain guide
6	-	Intermediate shaft chain tensioner
7	-	Tensioner pin
8	-	Intermediate shaft chain

Camshaft drive assembly

Each camshaft drive includes the following parts:

• Intermediate shaft gear
• Camshaft gear
• Drive chain
• Chain guide

The left drive assembly is driven from the front of the intermediate shaft, and the right one is driven from the rear.