Removal
1. Chock the rear wheels then jack up the front of the vehicle and support it on axle stands (see "Jacking and vehicle support").
2. Drain the cooling system as described in Chapter 1A. Alternatively, clamp the oil cooler coolant hoses directly above the cooler pipes, and be prepared for some coolant loss as the hoses are disconnected.
3. Position a suitable container beneath the oil filter, then unscrew the filter (using an oil filter removal tool if necessary), and drain the oil into the container. If the oil filter is damaged or disfigured during removal, it must be renewed and the engine should be filled with clean oil on refitting.
4. Release the hose clips, and disconnect the coolant hoses from the oil cooler.
5. Undo the bolt securing the oil cooler pipes to the transmission, then unscrew the oil cooler/oil filter mounting bolt from the cylinder block, and withdraw the cooler. Discard the oil cooler sealing ring; a new one must be used on refitting.
Refitting
6. Fit a new sealing ring to the recess in the rear of the cooler, then offer up the cooler to the cylinder block. Refit the mounting bolt, and the bolt securing the pipes to the transmission, tightening them both securely.
7. Fit the oil filter, then lower the vehicle to the ground. Top-up the engine oil level as described in "Weekly checks".
8. Refill or top-up the cooling system (as applicable) as described in Chapter 1A or "Weekly checks", then start the engine and check the oil cooler for signs of leakage.