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 is reduced, causing a constant drop in oil pressure
The oil pump is non-separable, driven by a chain from the crankshaft
The oil pump consists of a housing, inner and outer rotors, pressure reducing valve, inner and outer gear
We prepare the car and install it on a lift or a viewing ditch
Disconnect the negative battery terminal
Remove the crankcase protection
Remove the decorative engine cover
Set the piston of the first cylinder to the TDC of the compression stroke
Drain the oil from the oil sump
Remove the cover of the timing gear drive, as indicated in the article "How to replace the timing chain of a Mazda 6 car"
Remove the timing chain
After removing the timing chain, it is forbidden to turn the crankshaft and camshafts, as the valves may be damaged by the pistons
We unscrew the fastening bolt and remove the shoe of the oil pump drive chain tensioner
Unscrew the oil pump sprocket bolt and remove the sprocket together with the chain
Inspecting the sprockets of the crankshaft and camshaft
Check the condition of the chain tensioner shoe. If necessary, we replace defective parts
Remove the engine oil sump
Unscrew the bolts for attaching the oil receiver to the oil pump and remove the oil receiver
We unscrew the four bolts of the oil pump and remove the pump
Each time the pump is removed, the crankshaft oil seal must be replaced
Install the pump in reverse order
Replacing the oil filter
Fill engine oil
Removing and installing oil cooler
Preparing the car for the task
The oil cooler is non-separable, if it malfunctions or coolant leaks from the seal, we replace it
Remove the crankcase protection
Draining the coolant
Remove the oil filter
Loosen the inlet hose clamp, slide the clamp along the hose and remove the hose from the oil cooler pipe
We also disconnect the outlet hose from the cooler pipe
Unscrew the bolt securing the oil cooler to the cylinder block bracket and remove the oil cooler
Remove the sealing ring 5 (it needs to be replaced)
Install the oil cooler in reverse order
Fill engine oil
Pour coolant into the engine
Start the engine and check the tightness of the connections
