Genuine 3LD1 Fuel Pump + Injection Pump fit for Isuzu Excavator

I've got a Bosch style zexal injector pump it's for 10 21 is the number on the housing itself so I've got a few things I'm just gonna point out before I actually do with the Assembly of it just so things go back together easily properly so on we've got a geared sleeve that has a slot shaped oblong shaped hole in it it has a little groove that's also cut in it we use that to orientate the sleeve to the rack when we assemble it and there's a corresponding groove in the rack so keep that in mind that the groove in the geared sleeve and the rack will both be in line as well if this is the plunger the plunger it has a diagonal slot that's been ground in it to vary the fuel the volume of fuel that's going to be pumped through it also has a little slot that's ground on the body of the D that we're going to line up with the little groove that's cut on the geared sleeve we're going to line those