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DB2 Interchange

dragogt

dragogt

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Can anybody explain what the differences are between a regular and military 6.2 6.5 pumps?

From what I understand the milspec ones have 'hardened" internals so they can run whatever fuel is available; I've also heard the 24v thing, but then I've also heard that "just" the starter is 24v and everything else is 12v.. Also will the injector lines mix and match? I understand that DS4 and DB2 lines won't, and that you have to use a full set from whatever pump I.E. all from a 6.2 or all from a 6.5; But other than that is there any reason why they wont?


Also any reason why you cant just use a transformer or a relay to get 24v if required for the pump, Bobby said that a Stanadyne Service Center should be able to change it over relativity cheep; But for some reason Google does not like me right now to be able to find one...
 
DB2 6.2 lines are slightly different than DB2 6.5 lines. Diameter I hear and for sure a 1" timing adapter on a single 6.5 line on the IP. DS4 lines are completely different then DB2 lines pump side.

You can use a 6.2 line set on a 6.5. Even the 6.2 long injector line sets will fit the short 6.5 injectors with a little bending.

Don't know of any difference for military IP's and fuel offhand.

The precups and emissions (none/exempt) are different though.

24 volt DC. Transformers work with AC, not DC.
 
DB2 6.2 lines are slightly different than DB2 6.5 lines. Diameter I hear and for sure a 1" timing adapter on a single 6.5 line on the IP
Click to expand...

So do the 6.2 line have a timing adapter or how do they work and is required? Last diesel I saw get timed the tech used a timing light clipped to the #1 injector line..
 
WarWagon said:
DB2 6.2 lines are slightly different than DB2 6.5 lines. Diameter I hear and for sure a 1" timing adapter on a single 6.5 line on the IP.
Click to expand...

Most (all) 6.5 trucks that came with a DB2 did use the timing adapter on #1, but non adapter lines are available. Peninsular has them. BTW, the military NA 6.5 I got did not have the adapter line for #1, its like the rest. FWIW I have never found a shop or dealer that had the equipment to use the timing adapter on #1 thingie.
 
Ok so does anybody know the actual Voltage and Amperage on a 24v pump??

The TM in the stickies says 17.6v but not the amperage...
 
dragogt said:
...Bobby said that a Stanadyne Service Center should be able to change it over relativity cheep; But for some reason Google does not like me right now to be able to find one...
Click to expand...

Help to find a local dealer:

http://www.stanadyne.com/view.php?id=43

Look at the fuse rating for max amperage. Think of the electronics outside the IP that would need to be 24v. Are you 100% sure it is a 24v pump? Have you measured resistance of one of the solenoids vs. the values of a known 12v pump?
 
WarWagon said:
Help to find a local dealer:

http://www.stanadyne.com/view.php?id=43

Look at the fuse rating for max amperage. Think of the electronics outside the IP that would need to be 24v. Are you 100% sure it is a 24v pump? Have you measured resistance of one of the solenoids vs. the values of a known 12v pump?
Click to expand...

I'm getting the pump from bk95td and thats what he said... (but the model number " 4879 " matches to a Military pump... )

And from the stickies
DB2829-4879 10149634 1990½ HMMWV (Military) - 1.2 cSt G — —
Click to expand...

But that leads me to my other question, I've also heard that "just" the starter is 24v and everything else is 12v..

Also would the resistance values be relative to the amperage??


NVW said:
From what I've read previously the adapter senses the injection pulse and with that the meter can read timing.
Click to expand...

Interesting, thanks..
 
nobby said:
Or if it definitely 24 VDC then use a 12 - 24 VDC converter. They are out there and are fairly common. Google using the term converter.
http://www.mastervolt.com/marine/products/dc-master/dc-master-12-24-3a/

I can supply you one if it makes it easier for you.

Cheers
Nobby
Click to expand...


Yep, that what I was thinking; I friend of mine on another board is an electrician by trade and thats what he was recommending, but he needs to know voltage and amperage..


WarWagon said:
Voltage divided by resistance gives you amperage. I assume a pump with double the resistance (of a known 12V pump) should be 24v (or it could be the same resistance with a 24V high amp coil... Possible but not likely me thinks.)

http://www.the12volt.com/ohm/ohmslaw.asp
Click to expand...


Thanks, that helps out a lot..

If its not obvious electricity is not my strong suit.. lol
 
I'm sure the current draw is not that high and should be lower than 12v. The cost difference between say 3A and say 7A is not that much so perhaps be Victorian and just CYA.

cheers
Nobby
 
Can you explain that a little bit more, because the TM states to test the pump w/ 17.6 vdc...
 
Sorry missed the 17.6 volt bit.
To be honest I know little about the setup specifics of the military pump but I too would be wary of trying to run the pump with a 12-24 converter as you'd be sending the pump 27 volts or so. As already suggested it may very well be simplest to change out the top to a 12 volt setup. Also makes me wonder what voltage then a 12 volt unit is getting?

Cheers
Nobby
 
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