Engine/Transmission (1998.5 - 2002) vp44 carnage

[SEmerson]

Well I finaly got the pump off. After removeing the whole front of the truck and front of engine. I broke a strong puller. Heated the gear red hot while running water on the pump and front of shaft. Still wouldn't move. So I cut the gear out.

 

[SEmerson]

more

 

[WyattEarp]

I have to say when all else fails give'er H***... . LMAO

Look out guys mad man with a cutting torch... I have to say that does look pretty bad.

 

[justinp20012500]

And what the he!! caused that????????????????

 

[Gary - K7GLD]

And what the he!! caused that????????????????



Gear spun on shaft after shearing key because VP-44 seized up - ended up welding gear to shaft from heat...



At least that's my guess...

 

[Tcolesanti]

Holy Sheep *****!!! Thats pretty ugly. What did it soud like when the pump siezed and the gear kept going???

 

[Gary - K7GLD]

Holy Sheep *****!!! Thats pretty ugly. What did it soud like when the pump siezed and the gear kept going???



After a few initial unusual ugly sounds, it probably got REAL quiet!



Was probably LOTS noisier at various points as the pump was being removed...

 

[Turbo Tim 1]

Thanks for posting the pictures and sorry for your misfortune! That doesn't look like it was any fun! Thank god for the "Blue Tipped Speed Wrench"

 

[John - K5AWO]

SEmerson,



Today, this is not so funny... and I know the pain in the wallet is worse. Don't look to me like you have a "core" to work with. The electronics and case halves might be salvagable. Depends on what happened inside.



My guess, the electronics is all you have for a trade-in.



Can you replay the last 10 seconds just prior to it getting totally, and profoundly quiet?

 

[SEmerson]

Originally posted by Tcolesanti

Holy Sheep *****!!! Thats pretty ugly. What did it soud like when the pump siezed and the gear kept going???

A loud squeal. also squealed when trying to start.



I just put a new vp44 it ran great. So after less than 100 miles I pierced the wire. I have a spot of road marked off to judge my performance. First run good take off, 2 gear rubber. But boost was down to 35. Then 3/4 way down the q mile it lost all power and died. A loud squeal could be heard when ever it turned over. Pressure never below 6#'s. When turning it over by hand it made really ugly grinding noises. But did turn over. When looking at the shaft you can see the key was sheared.



Just lucky I guess ... ... ... .

 

[SHobbs]

Do I understand this correctly? Only 100 miles on pump and it failed after piercing the wire. If that's correct I sure am glad I didn't do it to mine. Hope nothing else was messed up with all the cutting you had to do.

 

[fox]

Not trying to flame, but this is the reason one shouldn't go to full throttle with a new pump or anything. Give the item a chance to wear in.

And alway use some lube in the fuel.

 

[SEmerson]

yes less than 100

 

[Ram4Sam]

Need this?

Looks like might need one of these



http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&category=33553&item=7910072435&rd=1



Sam

 

[SEmerson]

I got one from cummins $125

 

[EricBu12]

Only $9. 50 so far with 1 day and a few hours... .

 

[Chipstien]

SEmerson, is warrantee out of the question or was it a Hot Rod 44. FWIW I too would have waited at least 1000 miles before tapping the wire. Tolerances are always tight on new parts. Sorry about the misfortune.

 

[CCOLLAR]

I wonder:



1) did the pump pistons sieze, causing the key to shear and the shaft to weld itself to the gear; or,



2) did the extra torque of your mod spin the gear with a force greater than the press- pressure of the shaft in the gear, causing the key to shear and the shaft to weld itself to the gear.



I guess an easy test is to see if the pump shaft turns at all. If (1) is the case, you shouldn't be able to turn the shaft.



I can't imagine that the gear spinning on the shaft would generate enough heat to spot-weld them together.



I've experienced a similar failure, but not nearly so dramatic. Either my pump partially froze, or the gear spun with enough force, but either way the key was partially sheared and caused my pump to give me enough problems (timing errors) to warrant replacing it. Check out the pics here:



https://www.turbodieselregister.com/forums/showthread.php?threadid=99985



Note how it has been sheared to 1/2 of its width.



Perhaps the extra power some of us have added can cause the torque of the gear turning to overcome its pressed fit onto the shaft?



Craig

 

[SEmerson]

I am buying the gear as a spare if it goes cheap.



The shaft spins now but sounds pretty ugly.

 

[Gary - K7GLD]

Perhaps the extra power some of us have added can cause the torque of the gear turning to overcome its pressed fit onto the shaft?



I can't imagine ANY power mods that would have any significant effect on the relationship between that gear and the shaft - the VP-44 will only pump a certain maximum PSI/volume of fuel per revolution regardless of fueling mods - and I'm pretty sure all the hardware is designed to adequately handle that volume and pressure without slippage in normal scenarios - but internal component seizure or related failures are something else again...