Removing and installing oil cooler

The oil cooler is installed in front of the radiator of the engine cooling system and is connected to the lubrication system with rubber hoses

You will need: 12 wrench, flat blade screwdriver.

Removing the radiator and pressure reducing valve of the oil system ZMZ-409

Remove the four mounting bolts and remove the upper radiator shield.

Removing the radiator and pressure reducing valve of the oil system ZMZ-409

Remove the four bolts securing the right side shield

Removing the radiator and pressure reducing valve of the oil system ZMZ-409

Remove the shield.

Removing the radiator and pressure reducing valve of the oil system ZMZ-409

Remove the two oil cooler mounting bolts on the left side

Removing the radiator and pressure reducing valve of the oil system ZMZ-409

Remove the two screws on the right side

Removing the radiator and pressure reducing valve of the oil system ZMZ-409

Remove the oil cooler.

To prevent oil from leaking out of the hoses and oil cooler during disconnection, lift the radiator with the hoses up and carefully separate the hoses.

Removing the radiator and pressure reducing valve of the oil system ZMZ-409

Loosen the radiator hose clamps and remove the hoses

Install the radiator in the reverse order of removal

Replacing the pressure reducing valve and oil cooler valve

The pressure reducing valve is mounted on an adapter screwed into the oil line of the cylinder block on its right side.

In turn, the oil cooler tap is screwed into the threaded hole of the valve body.

You will need: keys "for 14", "for 19", "for 22", "for 24".

Removing the radiator and pressure reducing valve of the oil system ZMZ-409

While holding the radiator valve from turning, unscrew the fitting of the radiator inlet hose and disconnect the hose.

For convenience, remove the oil filter.

Removing the radiator and pressure reducing valve of the oil system ZMZ-409

Remove the tap from the pressure reducing valve body

Removing the radiator and pressure reducing valve of the oil system ZMZ-409

While holding the adapter from turning, unscrew the pressure reducing valve from it.

Install the valve and valve in the reverse order of removal, lubricating their threaded parts with sealant.