Range Rover Classic: A later model Range Rover, which appears to be well equipped for some outback All Aussie Adventures (yikes!). All I can say is… good luck!
Older Range Rovers have an idler pulley tensioner for the fan belt that can occasionally give trouble, and due to the low position, it’s prone to being immersed in water and mud especially if you’ve been going off road and crossing creeks. Water and mud takes it’s toll on this bearing pretty bad leading to premature failure. Fortunately, the bearing is an easy job to replace and will cost under $10 to replace.
Note this is the older V belt pulley not the serpentine belt type as used in the later Range Rover / Land Rovers (which also have similar issues).
- Remove the whole idler assembly
- Remove circlip with circlip pliers. (Without breaking it or letting it fly off).
- Drift out center arm. A 7/16″ socket is perfect for this. It should come out fairly easily.
4. Flip over the pulley and drift out the bearing… again with the 7/16″ socket.
The original bearing has the part number 6203 stamped on it. Dimensions are 40mm (OD) x 17mm (ID) x 12mm (wide).
This bearing is widely available at most bearing shops and can be readily purchased online here:
The bearing is available in different grades such as standard or high speed and quality of either budget Chinese or high quality Japanese.
Fitting new bearing:
Replacement: Drift in the new bearing with large 1 -1/8″ socket and replace the circlip.
Fit the arm into bearing center and refit the bolt with nyloc nut. (some aftermarket versions of this pulley may not have the nut & bolt.)
- Refit the tensioner assembly on the engine. Make sure the idler pulley is lined up properly with the crank pulley so the belt runs straight.
- Tighten up fan belt.
- All done!