How to check oil pump gear to housing clearance
#1
How to check oil pump gear to housing clearance
I am about halfway through replacing the front cover due to some broken oil pump gears . I used some sandpaper to clean up the cover and the oil gear cover and I’m concerned that the gears don’t have enough space to rotate. in another post a forum member suggested there is a specification used to check to the clearance with a feeler gauge but I can’t find any details in rave. does anyone know?
#2
The feeler gage goes between the gear and housing.
The gears have plenty of room, and they actually wear away the aluminum on the inner cover where they contact, so the clearance gets bigger, not smaller(impossible).
That's why you check the gear to cover clearance, to see if the gap has worn to a size that's out of spec, which can cause lower oil pressure.
The only fix for that is a new cover.
If your cover had no real visible wear, and when you started sanding, it cleaned up quickly(no low spots, gouges or scoring to remove), then the odds are it's ok.
I'll find the gap tolerance and come back and post it.
The gears have plenty of room, and they actually wear away the aluminum on the inner cover where they contact, so the clearance gets bigger, not smaller(impossible).
That's why you check the gear to cover clearance, to see if the gap has worn to a size that's out of spec, which can cause lower oil pressure.
The only fix for that is a new cover.
If your cover had no real visible wear, and when you started sanding, it cleaned up quickly(no low spots, gouges or scoring to remove), then the odds are it's ok.
I'll find the gap tolerance and come back and post it.
#3
#4
The feeler gage goes between the gear and housing.
The gears have plenty of room, and they actually wear away the aluminum on the inner cover where they contact, so the clearance gets bigger, not smaller(impossible).
That's why you check the gear to cover clearance, to see if the gap has worn to a size that's out of spec, which can cause lower oil pressure.
The only fix for that is a new cover.
If your cover had no real visible wear, and when you started sanding, it cleaned up quickly(no low spots, gouges or scoring to remove), then the odds are it's ok.
I'll find the gap tolerance and come back and post it.
The gears have plenty of room, and they actually wear away the aluminum on the inner cover where they contact, so the clearance gets bigger, not smaller(impossible).
That's why you check the gear to cover clearance, to see if the gap has worn to a size that's out of spec, which can cause lower oil pressure.
The only fix for that is a new cover.
If your cover had no real visible wear, and when you started sanding, it cleaned up quickly(no low spots, gouges or scoring to remove), then the odds are it's ok.
I'll find the gap tolerance and come back and post it.
Last edited by ttownthomas; 04-30-2020 at 09:51 AM.
#5
As far as the tolerance/clearance goes, it's kinda an is what it is situation, as all you can do worst case is replace the cover($400).
I'de just pack the gears, loctite and torque the posi drive screws on the cover, and put the rest back together(with new o-ring on the pick up tube(put some oil or vaseline on the o-ring too).
#7
You can pull the fuel pump relay and crank it to build oil pressure before you actually start it if you want to.
The vaseoline and/or assembly lube packed in the gears is so you will have some pressure and lubrication on first start anyway.
#8
No, put it all back together, you already know it's installed correctly and not binding.
You can pull the fuel pump relay and crank it to build oil pressure before you actually start it if you want to.
The vaseoline and/or assembly lube packed in the gears is so you will have some pressure and lubrication on first start anyway.
You can pull the fuel pump relay and crank it to build oil pressure before you actually start it if you want to.
The vaseoline and/or assembly lube packed in the gears is so you will have some pressure and lubrication on first start anyway.
#9
#10