4.2.1. Removing the radiator
The radiator mounting method is the same for all engines.
- Drain the cooling system as described in chapter 4.1.
- Remove the upper and lower cooling hoses after releasing the clamps from the engine radiator.
- Disconnect the battery.
- Disconnect the electrical connections to the fan motor wiring harness and remove the fan start thermal switch wire. For a diesel engine, also separate the plug for the quick-release valve (to the left and in front of the radiator) and a plug for the coolant condition sensor (in the middle of the radiator).
- With the automatic transmission installed, disconnect both oil cooler hoses. This will cause liquid to leak out and need to be collected in an appropriate manner.
- Loosen and remove the bypass hose between the radiator and the expansion tank.
- Loosen the radiator bolts on the top side from both lock washers and remove the radiator together with the fan, making sure that the radiator honeycombs do not touch any engine or body parts.
- If necessary, unscrew the hood together with the fan from the radiator. Check radiator hoses for porosity and replace if damaged. Check the radiator for leaks, which in most cases are identified by rust spots. A non-sealed radiator can probably be soldered in a specialist workshop. Once the radiator inspection has been completed, the radiator cap can be pressure tested. To do this, install a pump on the lid and connect the pressure. The valve on the lid should open at a pressure of 0.8-1.0 atm. The minimum permissible pressure is 0.60 atm.
4.2.2. Installation
Installation is carried out in sequence. reverse of removal. Replace water hoses if defects are suspected. Fill the cooling system as described in chapter 4.1. After the engine reaches its operating temperature, check all connections for leaks. If a radiator test pump is available, it should be attached to the radiator filler pipe with the system closed and the system pressurized (no more than 1.6 atm.). The pressure in the installation must not drop. If it has decreased, there is a leak. In this case, you need to park the car in a dry place to identify where the coolant is leaking from.
[Based on website data MazBook]