what is this part called ? reillo g3b oil pump

[cowboyplumber]

got new oil and tried to start my reillo g3b oil burner ,when it idnt fire and went to lockout i bleed the pump and check the nozzle ,and eventually took apart the pump to find lots of black oil slug around the oil pump.so i cleaned all the stuff of and cleaned through the pump and the only output that didn't flow oil was the oil pump to nozzle connection ,so my question is what is this part and could it be my problem?
any help greatly appreciated

 

[John.g]

It looks like part of the drive, thought they had a plastic drive coupling part somewhere that may have failed, have you checked the gears by removing the cover?, but mark its position before removal.

 

[cowboyplumber]

It looks like part of the drive, thought they had a plastic drive coupling part somewhere that may have failed, have you checked the gears by removing the cover?, but mark its position before removal.

th

thanks for your help

 

[cowboyplumber]

It looks like part of the drive, thought they had a plastic drive coupling part somewhere that may have failed, have you checked the gears by removing the cover?, but mark its position before removal.

here is the story the burner is 4 months old i ran out of fuel and when i got fuel it burned ok for two days and then stopped

 

[cowboyplumber]

here is the story the burner is 4 months old i ran out of fuel and when i got fuel it burned ok for two days and then stopped

here is the story: the burner is 4 months old i ran out of fuel and when i got fuel it burned ok for two days and then stopped . i began checking the system and am not receiving oil to the burn nozzle so no flame [the electrodes are sparking] the oil is

 

[cowboyplumber]

It looks like part of the drive, thought they had a plastic drive coupling part somewhere that may have failed, have you checked the gears by removing the cover?, but mark its position before removal.

here is the story: the burner is 4 months old i ran out of fuel and when i got fuel it burned ok for two days and then stopped . i began checking the system and am not receiving oil to the burn nozzle so no flame [the electrodes are sparking sparking]

 

[exedon2]

How far did you strip pump down?
No filter on oilline?