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Changing the Rotating Direction of a Hilborn or Enderle Round 6 or 8 Bolt Front Cover Type Fuel Pump
HILBORN:
On a Hilborn pump, the locating pin will be on the ” Hilborn” side of the pump when it is Timing cover Rotation- It will be on the “150” Side of the pump for Belt Drives or Rear Cam drives .
To reverse the pump :
Take the 8 bolts holding the cover out,
Put the pin in a vice and rotate the pump to get the pin out .
You will probably not be able to rotate the pin using vice grips.
Move the pin to the other side .. Be sure to tap it in straight.
Fill the pump with oil….
Reinstall the cover .
Secure the bolts while you are turning the pump over with a wrench.
A 3/8″ Socket on a drill makes it an easier job.
Do NOT secure all the bolts at once.
Continue to secure one at a time while turning the pump.
If it feels like it’s binding up- Do not try to run it – it will NOT ” Break in” – it WILL lock up.
So, if it seems to bind, you must spin in backward and forward until it frees up and turns easily.
If you cannot make it go back together without binding up- Send it into us or to Hilborn for service
ENDERLE
Enderle pumps are marked with a V shaped make on the Front Cover of the pump
Orient the pump so that 8 bolts on the cover are facing you for a 80A pump or 6 Bolts facing you for larger pumps.
With the inlet threads facing Down , the V Notch will be at 3 O’Clock for timing cover drives or 9 O’Clock for Belt Drives .
To Reverse the rotation:
Remove all the cover bolts-
Remove the cover .
Check the O ring for flatness – Replace it if you need to – We stock them .
Fill the pump with oil- trans fluid, Marvel, Engine oil, etc.
Rotate the V until it is in the position you desire based on the above information.
Slightly secure two of the bolts , while continuing to turn the pump with a wrench or drill.
If the pump binds, start over . It CANNOT bind up and work, it must be free to rotate easily-
If you force it to rotate, it WILL lock up very quickly when you start the engine.
If you cannot get it back together, send it to us Alkydigger or back to Enderle
On a Hilborn pump, the locating pin will be on the ” Hilborn” side of the pump when it is Timing cover Rotation- It will be on the “150” Side of the pump for Belt Drives or Rear Cam drives .
To reverse the pump :
Take the 8 bolts holding the cover out,
Put the pin in a vice and rotate the pump to get the pin out .
You will probably not be able to rotate the pin using vice grips.
Move the pin to the other side .. Be sure to tap it in straight.
Fill the pump with oil….
Reinstall the cover .
Secure the bolts while you are turning the pump over with a wrench.
A 3/8″ Socket on a drill makes it an easier job.
Do NOT secure all the bolts at once.
Continue to secure one at a time while turning the pump.
If it feels like it’s binding up- Do not try to run it – it will NOT ” Break in” – it WILL lock up.
So, if it seems to bind, you must spin in backward and forward until it frees up and turns easily.
If you cannot make it go back together without binding up- Send it into us or to Hilborn for service
ENDERLE
Enderle pumps are marked with a V shaped make on the Front Cover of the pump
Orient the pump so that 8 bolts on the cover are facing you for a 80A pump or 6 Bolts facing you for larger pumps.
With the inlet threads facing Down , the V Notch will be at 3 O’Clock for timing cover drives or 9 O’Clock for Belt Drives .
To Reverse the rotation:
Remove all the cover bolts-
Remove the cover .
Check the O ring for flatness – Replace it if you need to – We stock them .
Fill the pump with oil- trans fluid, Marvel, Engine oil, etc.
Rotate the V until it is in the position you desire based on the above information.
Slightly secure two of the bolts , while continuing to turn the pump with a wrench or drill.
If the pump binds, start over . It CANNOT bind up and work, it must be free to rotate easily-
If you force it to rotate, it WILL lock up very quickly when you start the engine.
If you cannot get it back together, send it to us Alkydigger or back to Enderle