660 injector pump question

Overland660

New User
My injector pump stopped working. I took it off today because it was not turning over anymore so i know its not a stuck plunger. When i pulled the pump out the shaft stayed in the tractor. Does that mean the shaft that turns the pump is broken?

Also, after researching these pumps i have found there are several models. Dbgfc 631 5ae, " " 24ae, 67ae, and 110ae. What is the difference?

Thank you for any info you may have.
Bob
 
If you didn'e take the front access cover off and remove the gear from the IP shaft and removed the IP, the shaft had no choice but to stay in the engine.

Does it still have a "drive tang" at it's end (much like a BIG screwdriver)?

If so, it's not broken.

There is an area of reduced diameter away from the end of the shaft, acts as a mechanical "fuse", that's where the shaft will break if the head and rotor seize.

<img src = "https://c1.a2109.com/_150/aws_api/b0/b073/41u-iizchcl.jpg">

Rounded "groove" towards the RH side is where they would normally break.
 
Did you turn the engine by hand and align the pump timing marks under the two screw cover on the side? If you did shaft is not broken. If you just yanked it without setting the timing it COULD be broken at the shear groove. If you see the tang with dot on the end shaft is OK. I usually remove/replace the pumps leaving the shaft in the engine. If the shaft IS broken, the pump needs torn down and hydraulic head pressed apart to find the seizure cause BEFORE installing another pump, or you MAY ruin another one and break another shaft. By looking at the seizure point on the rotor the cause can be determined, then corrected so it won't happen again.
 
stopped working? how can it stop working? not turning over?? there is no plungers. its normal for the pump to pull off the shaft.
 
the gear is on the end of that shaft,
so when you pull the pump off the shaft will have some wobble. totally not necessary to remove front cover.
 
(quoted from post at 00:13:50 02/13/19) The pump did not turn. When i pulled the pump off the end of the shaft was broken off and still in the pump.

"When i pulled the pump off the end of the shaft was broken off and still in the pump."

So you knew all along the shaft was broken, but yet you posted asking if it might be broken???

Doesn't make sense???
 
(reply to post at 22:26:13 02/12/19)
The pump did not turn! I figured the shaft was broken. But not knowing what the shaft looked like inside i wasnt sure where it would have broke. Make sense??? I dont know how to explain any more easy than that.
 

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