3.22. Dismantling of the oil pump

We remove the oil pump (cm "Removal of the oil pump")

Cap key "on 10" we turn off three bolts of fastenings of a reception branch pipe to the case of the oil pump.

We remove a reception branch pipe with the reducing valve.

We take out the reducing valve from a branch pipe...

... valve spring...

... and persistent washer.

We uncover the pump.

We remove from an axis in the case the conducted pump gear wheel.

... also we take out the leading gear wheel with the drive roller.

We wash out pump details in gasoline or kerosene and we blow compressed air. In the presence of cracks, zadir and strong wear of the case, a cover and gear wheels we replace the pump. We examine the reducing valve: on its working surfaces there should not be забоин also agnails which can lead to pressure decrease of oil in the engine lubrication system.

We oil pump details engine and we assemble the pump in the return sequence. After assembly we turn a hand the leading roller of the pump: gear wheels have to rotate easily, smoothly and without jammings.