IH 574 injector pump

B.Evers · Apr 24, 2011

Need help with the injector pump removal,removed the two outer pump mount nuts,took the insp. cover off on the other side,removed the three bolts and even the nut, it wiggles but won t come off, whay am I missing ?
Thanks

JimB2 · Apr 24, 2011

Hi B, hoped you lined up the timing marks and scribed everything as you should not have removed or even loosened the 3 cap screws on the pump drive gear. All that was required was to remove the big nut on the pump drive shaft. The pump drive shaft is a tapered shaft with a woodruff key in the pump drive gear. The approved method to remove the pump drive gear from the drive shaft is a special puller tool from IH. I screw the big nut off the drive shaft, put a piece of hardwood against the end of the shaft and give it a sharp tap with a hammer. Be careful not to damage the threads on the drive shaft. Also leave one of the nuts on the pump mounting bolts screwed on a couple turns so when you tap the drive shaft the pump doesn't go flying out onto the ground.

JimB

IH 574 injector pump

B.Evers

New User

JimB2

Well-known Member

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