There are several things to remember when removing and refitting a Citroen radiator.
The first is the fragility of the unit. Most modern Citroen radiators are made from an aluminium centre core capped on both ends with plastic tanks.
The radiator plastic end tanks are also fairly fragile and great care should be taken to not knock the plastic locating pins.
NEVER remove a Citroen radiator cap from a Citroen radiator expansion tank or Citroen radiator whilst the engine coolant is still hot. Great pressure can build up in some Citroen radiator systems and the fitter must be sure that the engine and it's cooling system have had sufficent time to cool.
If your Citroen radiator is of copper and brass construction be careful not over tighten any threaded fittings such as the hole for the Citroen radiator fan switch. The fittings are only soft soldered into the Citroen radiator tank and can easily be broken if over tightened.
Care should also be taken when removing and refitting the Citroen radiator hoses on to the Citroen radiator pipes, again these fiitings are soft soldered and can form leaks if excessive force is used.
If your Citroen radiator has an inbuilt oil cooler with threaded fittings for the pipes ensure they are not cross threaded when attaching.
Always, always, always replace the anti freeze solution when refilling the Citroen radiator. The antifreeze also acts as engine coolant as it has a higher boiling temperature than water. Aways use the manufacturers recommended solution and observe the correct ratio of water to anti freeze.
When you are confident that the Citroen radiator is fitted correctly and all pipes are sufficently tightened you will need to run the engine until it gets warm enough for the thermostat to open and circulate the water through the entire system. It is ESSENTIAL to remove any trapped are from the Citroen radiator cooling system as air expands greatly and can blow a Citroen radiator from the pressure build up.
It is advisable to set the heater temperature control to HOT as this will allow water to circulate through the unit. Do not switch the fan on as this will only slow the process of heating the system.
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