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Next you need to remove the pressure fittings that connect the condenser to the AC circuit. These are located at the bottom left corner of the unit marked on the photo above. Mine were pretty tight and very well corroded as they tend to stay very wet. Lots of WD-40 (penetrant and lubricant) and patience required – you will need a spanner on the bottom of the fitting to support it while you turn the top collar else it will simply shear off the support bracket. Do not shear off the fitting – it is aluminium and would be difficult to remove if left in the pipework. If you have trouble, carefully try a little heat – a small blowlamp is ideal. Read the BMW 5 Series (E34) service and repair manual book as complement, better if you read the wiring diagram or engine diagram of BMW 5 Series (E34) vehicle. Having removed the fittings, give them a little wipe down and cover the ends with tape – you want to avoid any dirt or moisture entering the system. Slide the large rubber grommet that supports the solid pipes as they pass through into the radiator compartment away from the hole it sits in. This will allow the pipes to move more freely away from the pressure fittings. Disconnect the electrical socket connector on the bottom of the electric fan. Open the bonnet and remove the rubber trim from along the top of the radiator. Carefully slide something in between the radiator and condenser to protect the radiator fins that are easily broken or damaged. I found a rectangular piece of corrugated plastic ideal, the same height but just a little narrower than the radiator.
Tags : bmw 5 series, rubber grommet, socket connector, top collar, ac circuit, rectangular piece, electrical socket, support bracket, electric fan, pipework, wd 40, penetrant, condenser, radiator, lubricant
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