In the article we will consider the removal of the oil pump, engine oil cooler

Removing and installing the oil pump

We remove the oil pump when repairing the engine, as well as for replacement when its supply decreases, causing a constant drop in oil pressure

The oil pump is non-removable, driven by a chain from the crankshaft

The oil pump consists of a housing, internal and external rotors, a reduction valve, an internal and external gear

We prepare the car and install it on a lift or an observation ditch

Disconnect the negative battery terminal

Removing and installing the Mazda oil pump 6

Removing the protection of the engine crankcase

Removing and installing the Mazda 6 oil pump

Removing the decorative engine cover

We install the piston of the first cylinder in the TDC of the compression stroke

Drain the oil from the oil sump

Removing and installing the Mazda 6 oil pumpRemoving and installing the Mazda 6 oil pump

We remove the cover of the gas distribution mechanism drive, as indicated in the article "How to replace the timing chain of a Mazda 6 car"

Removing the chain of the gas distribution mechanism

After removing the timing chain, it is forbidden to turn the crankshaft and camshafts, since the valves may be damaged by the pistons

Removing and installing the Mazda 6 oil pumpRemoving and installing the Mazda 6 oil pump

Unscrew the fastening bolt and remove the shoe of the oil pump drive chain tensioner

Removing and installing the Mazda 6 oil pumpRemoving and installing the Mazda 6 oil pump

Unscrew the oil pump sprocket mounting bolt and remove the sprocket along with the chain

Removing and installing the Mazda 6 oil pumpRemoving and installing the Mazda 6 oil pump

Inspect the crankshaft and camshaft sprockets

Check the condition of the chain tensioner shoe. If necessary, we replace defective parts

Removing and installing the Mazda 6 oil pumpRemoving and installing the Mazda 6 oil pump

Removing the engine oil sump

Unscrew the bolts securing the oil receiver to the oil pump and remove the oil receiver

Removing and installing the Mazda 6 oil pump

Unscrew the four bolts securing the oil pump and remove the pump

Each time the pump is removed, the crankshaft oil seal must be replaced

Installing the pump in reverse order

Replacing the oil filter

Pour oil into the engine

Removing and installing the oil cooler

Preparing the car for the task

Removing and installing the Mazda oil cooler 6

The oil cooler is not disassembled, if it malfunctions or coolant leaks from the seal, we replace it

Removing and installing the Mazda oil cooler 6

Removing the protection of the engine crankcase

Drain the coolant

Removing and installing the Mazda 6 oil coolerRemoving and installing the Mazda 6 oil cooler

Removing the oil filter

Loosen the mounting clamp of the supply hose, slide the clamp along the hose and remove the hose from the oil cooler nozzle

We also disconnect the discharge hose from the cooler nozzle

Removing and installing the Mazda oil cooler 6

Unscrew the oil cooler mounting bolt to the cylinder block bracket and remove the oil cooler

Remove the O-ring 5 (it needs to be replaced)

Installing the oil cooler in reverse order

Pour oil into the engine

Pour the coolant into the engine

Start the engine and check the tightness of the connections