We merge from the engine oil (see oil Replacement).
We remove the engine case pallet (see Replacement of the pallet of a case).

Key "on 13" we turn off two bolts of fastening of the oil pump...

... also we remove it from the engine. Between the pump and the block of cylinders laying is established.

Key "on 10" we turn off three bolts of fastening and we remove a branch pipe from the pump.

We remove from a branch pipe the reducing valve with a spring...

... and persistent washer.

We uncover with the pump.

We take out from the case the leader...

... and conducted gear wheels.

At strong wear of the case, a cover and gear wheels we replace the pump.
We collect and install the pump in the return sequence, having oiled its details engine.