Engine/Transmission (1994 - 1998) pump timers... whats the secret??

[JIM S.]

Cumminspower98 and I timed my pump this morning, finally got it to stay at 15 deg. (was trying for 15. 5) But what is the secret to get the pump to stay at the desired setting while you pull the gear off?????? that seems to be the hardest part of the whole deal! thanks

Jim

 

[BigYellowIron]

Pop the gear off, then put your nut back on and snug it up a lil, set your desired lift, then pull the gear again. The first pop after the nut has been fully torqued is a strong one and usually moves your timming. When you pop it off after snugging it, it is a real mild pop.





Adam

 

[JIM S.]

mine and CP98s pumps must be extra touchy cause his was a bear and mine seemed to be worse no matter what we tried. barly snuging the nut, just barly loosening the nut ( so the gear wouldnt have hardly any room to POP off. Finally after many many trys we took the AFC off and supported one of the gov springs with a screw driver (being careful not to pry on anything ) and got it to stay in one place and finaly end up at 15... . so that is better than 12. 5 We also had the injector lines loose but that didnt seem to make any differance.

Jim

 

[CumminsPower98]

Yes, what's the secret??? I have another one to do one of these coming weekends. Everyone makes it sound so easy which I agree it is except for the pump not staying put. I do pop the gear loose then snug it up VERY lightly before timing and they still move. Yesterday when we did Jim's I put the gear on so lightly that when I pulled it, it just fell off with no pop at all and very little pulling pressure and the pump still turned in the retarded direction. Mine would go both directions and Jim's always went in the reverse direction. There has to be a better way. Pump experts feel free to chime in here.



Thanks,

Mark

 

[R.ebel]

Timing

There is a little device (sorry but the proper technical name is escaping me at the moment) that is on every pump used to lock down the pump after it has been on a pump stand. You take this little lock down device out (it threads into the side of the pump) and reintall it back words once you have the pump gear tightend down. All it does is engage a part of the pump to keep it from rotating. Rotate your pump to the desired plunger lift and use the lock down device to preseve your plunger lift while you pull the gear loose. After you reinstall the pump gear flip the lock down device back around

 

[JIM S.]

There is a little device (sorry but the proper technical name is escaping me at the moment) that is on every pump used to lock down the pump after it has been on a pump stand

I thought that little devise was to hold the pump at ITS TDC, not to hold at any given place. ... ... ... ... .

















could I be wrong? :--) :-laf

Jim

 

[GMcLean]

lock tab

Be very carefull!!!!! That tab is more for finding TDC of the inj pump and not for locking the pump in place!! The tab will bend fairly easily so be carefull or you will be:{ . Garth

 

[Extreme1]

Mine stayed put of the dissassembly but moved of the tightening. 15. 1

 

[Joseph Donnelly]

There is about 0. 8 degrees of slop in the timing blade on the side of the pump. Also it was set for stock timing, so not much help here. Don't use it to hold the pump. With experience and by putting the gear back on with only 5-10 ft lb torque on the nut, you will learn how much the pump jumps back when removing the gear. Set the lift to compensate.

 

[Todd T]

something that may help is, use the bolts for the puller to hold the gear from turning while tightening the initial 10-15lbs.



like Joe said, you just learn to anticipate how much preload to give it so it comes out OK.



any reason you didnt want to put some advance into it, while you were in there? not knocking you, just wondering.



Extreme1, "Physical Therapy" ??? care to explain? are you talking, like paint jobs and stuff

 

[JIM S.]

any reason you didnt want to put some advance into it, while you were in there? not knocking you, just wondering.

12. 5 up to 15 is advance I would say

Jim