supr

A Cummins decision, with Chrysler approval. Imagine the coversation between the lead Cummins Engineer and his Dodge counter part:
"Well, we have tested this pump 18 million hours and it looks great"
Dodge guy: "What about the heat and vibration? Don't you think that might case a probem? Maybe they slipped you a few ringer pumps"!
Cummins guy: "Naw, no problem. We trust our pump supplier. Besides, any issues can be inexpensively handled by warranty".
Dodge: "But you know, if the LP goes, with no FP gauge, the VP44 will surely fail. That will cost us all a lot of money, not to mention the customers time and money".
Cummins: "That may be true, but by then we will be on another project. Blame can always be reassigned".
Dodge: "I suppose you are right. Let's get on with it. It will only be 600,000 trucks and motors or so. Beside, Ford and Chevrolet have worse problems."
Cummins: "I am glad I am not the guy that designed that bad block run. That poor guy now runs the Navistar/Ford team".
Food for imagination!

Bart Timothy

After personally talking to the Cummins engineer in charge of the 5.9 engines, about lift pump failures, I'm convinced he's real happy that Dodge is taking the wrap for Cummin's screwup. Cummins (he) put a good deal of energy into resolving lift pump issues for the introduction of the common rail motor and went in quite a bit of detail of how they did it.

Dodge wants basically a "drop-in" power plant solution from Cummins.

Cummins engineers are more involved with any system having to do with the engine, than you might initially imagine. Intake and exhaust systems are a good example of this. Dodge doesn't have much to do with the designing of either of them.

Nor_Cal_Angler

dont bother with West Sac...i just got off the phone with John..best he could do is 161.37...just thought i would check for ya.

NCA

scottsjeeprolet

thanks to Ebay and all the wonderful people selling Campaign pumps on there you can no longer get them for $75, Cummins jacked them up $100.

Walt L

check out www.hoeslidiesel.com the last time i checked they were 139.00. Call em up and talk to Rodger. Good folks to deal with.

betsycam

Hope you're still out there...what were the symptoms of your LP not working, and why'd you have them check the preheater - what made you think of that? Just wondering since my second pump just installed seems be acting the same as the first that I thought had died.

johnh

when i installed mine, the sender was [U]bad[U] no amount of pressure would turn off the light
(i tested it with air pressure)

saab9k

Just installed a new pump( Carter ) today, used the Vulcan kit, pump back next to tank.
1/2 line, pressure started at 14-15 lbs, after a few miles idle 13, 2000 rpm steady 10.5 to 11 lbs. Must be a rebuild pump the diesel place in Memphis sold me. Paid $ 120. for it. The first they send was damaged, the plug-in broke, would not give a refund, had to send it back ( did it collect ) , they send the one on truck now.

bent valves

I am not sure where this came from but it shows how untested the Carter lift pumps were and one reason I will never use one.

In the following list of changes 12V refers to 12 volts and 24V refers to 24 volts. Our Rams use the 12 volt version. Some other ISB applications use the 24 volt version.

CORRECTIVE ACTION SUMMARY

Below is a brief history of Lift Pump Part Number and associated
design/product changes:

12V 24V

3943467 3942802 Initial ISB Production

3944818 3942802 Added "saw cut" to the motor casing to better
detect leaks during production

3944508 Stainless Steel Valve Seat/Bronze Bushing for
the Internal Pressure Regulator

3945812 3945813 Some lift pumps were having a problem with
the internal wiring shorting to the magnet sleeve. The wiring
insulation was inadvertently being
stripped from the wiring during assembly and during pump operation the
wires are shorting to the magnet sleeve.
Federal Mogul has changed the angularity of the wire lugs in the bottom
of the pump so the wires will enter behind the
magnet sleeve in a more direct manner, thereby reducing the chances of
stripping
the insulation. They also changed their end
of the line testing to look for this shorting problem during pump
operation. Federal Mogul is also adding a
radius to the top and the bottom of the magnet sleeve where the wires
travel behind the sleeve.

3948431 3948432 Corrosion of the connection of the pigtail
at the bottom of the pump was being seen. This was found to be to the
result of road salt acting as an electrolyte.
The vendor changed the electrical eye terminal from brass to
bronze. No corrosion is evident during simulation
and salt fog tests with the bronze terminal. The mechanical properties
of the bronze meet or exceed that of the
brass and the vendor did conduct vibration test for further
verification. To further aid in corrosion
resistance, grease was added to each terminal at the Engine plant during
assembly.

3946151 3948070 The lift pump was updated with an
integral electrical connector. The integrated connector eliminates the
need for a pigtail type harness on the pump
and will eliminate the exposure of the pigtail to environmental elements.
Also updated was EMI reduction for the pump
due to an added capacitor to the internal circuit board and a Ferrite bead
added to the connector.

3948431 (12V) and 3948432 (24V) where still
kept available for service because the wiring harness on older engines
where not long enough to plug into the integral adapter.

3938367 3938368 It was found the bearing material used
for the MFR. of bearings was not consistently uniform, leading to
variance in the pump performance. This
leads to change the bearing material to sintered iron from bronze.
There was also a change in armature shaft
geometry to straight one reduces the 100% inspection of the shafts.
These pumps have the integral connector.

For service, 3948431 (12V) was superceded to
3938435 (12V) and 3948434 (24V) was superceded to 3938436 (24V).
These pumps still maintain the pigtail wiring harness.

3990082 This is a service kit supercedes
3948431(12V). It includes 3938367 (12V) and a jumper harness (4025182) so
that it can be used on older engines with the
shorter lift pump connection wiring harness. 3938436 (24V) was superceded
to 3938368 (24V), but a kit was not created to
include the jumper harness, 4025182 must be ordered separately.



3990105 3990106 The lift pumps have been updated to include
hardened valve seat to reduce valve wear. The pump also reverts to a
prior use RFI circuit board due to components being
detached and jamming the pump.

Service kit 3990082 was updated to include
3990105 (12V). 3938368 (24V) was superceded to 3990106 (24V), but a kit
was not created to included the jumper harness,
4025182 must be ordered separately.


III. IMPLEMENTATION SUMMARY
The supplier started building pumps with these corrective actions in the
first week of May 2001. The latest lift pumps, part number 3990105 and
3990106 when into production

This info is dated and the 3990105 & 6 is no longer the current fix.

saab9k

so go with a holley pump??, would like to use 2 pumps, just need to find a 15 lbs bypass valve, then there would be a constant pressure.

dspencer

I have an extra campaign pump that I bought (3) so I'm fixed up for awhile. I had one changed under warranty and just recently replaced my second due to a leak in the pump due to the ULSD.

If anyone wants one of these I'll sell it without having to call around.

HINT HINT: Call the Cummins dealer in El Paso. When I called and ordered them they took my order without problems and said they had a bunch. That was several months ago. 64.90

Cummins Rocky Mountain El Paso Branch
(915) 852-4200