Archived P-pump help!!!

[JTEdieselram]

I just did a timing case on my dodge, along with a cam while I was in there. I ran the truck for a while with no issues, I got on it a few times and it ran awesom. I was nearing my house to do a few adjustments and check some things and got on it one last time kinda hard. It was doing good, then all of a sudden, it fell on its face and seems like it lost a few cylinders and is blowing tons of white smoke. I shut her down, and checked everything coolant level, oil level because my 1st thought was the headgasket, everything checked out? I pulled the valve covers because I thought it may have dropped a valve, but they are all there? can the timing gear slip on a P-pump? it seems like it could, instantally putting it way out of timing? This was suggested to me by someone else? any input would be greatly apriciated.

 

[TSkibyak]

I have a friend that had that happen to him and yes the timing had jumped sounds like the same problem

 

[bmoeller]

Yes, the timing can slip. There is no key or spline to keep the gear in place. It is a smooth tapered shaft.

 

[Timebomb]

You may want to pull the gear and make sure the shaft is clean and dry.

 

[Highfinance97]

Pull the gear again, then clean the shaft with brake clean.

you can Use the straw from the can to get inbetween the shaft and the gear.

then use shop air and blow it dry.

make sure ther is ABSOLUTLY NO OIL on the shaft and torque it to 185 ft. lbs





Michael

 

[WDimig]

make sure ther is ABSOLUTLY NO OIL on the shaft and torque it to 185 ft. lbs





Michael

whoa there that is a little bit high there on that spec. , the sepc is only 122 ft. lb. for the inline pump, while i took my nut to 150 with no problems, i would not reccomend going over 150 ft. lbs. if 150 wont hold it, then you have got other problems that your need to address.



wes

 

[MLee]

You have received some good advice here but not trying to add to the confusion, and if you do a search 165# was the latest recommended torque. Much over that you could pull the threads on the pump shaft. A new lock washer is also recommended, but when mine was done the old washer was re-used.

just my penny's worth.

Marv.

 

[Reb.B]

the 97 tech book says 120 but the pic shows 140. Also after making sure its super clean and making sure it the correct timing then i install green (Tapered shaft) locktight. I also put moly lube on the threads and the nut and lock washers. This help show a correct torque. Also its smaart that after u torque it down, tap the gear with a large socket and hammer and then torque it again. I've never had one slip, (even a stupid pump with no plate) after doing this. I think i remember J Donnely saying that he saw a p-pump snap the end of the shaft off at 160 tq. I personnaly go to 130.

 

[Jim Fulmer]

Cummins service manual says 144, I go to 160 and have for years. The main thing to do is put a new washer on each time... ... . there a whopping $2 then about every 5 time or so change the nut.



Jim

 

[JTEdieselram]

not the pump timing, I was hoping that would be a simple fix, but it ended up being a blown headgasket. Weird cuz no pressure made its way to the radiator, and no water got in the oil, but the gasket is definatally done. Thanks for all your input guys!