Engine/Transmission (1998.5 - 2002) 98.5 Connector Tubes

[Nate]

I'm going to be putting some RV275 injectors in the truck, and it was suggested to replace the connector tubes.



I guess the 98. 5 tubes are prone to leak after doing an injector change? I hadn't heard that before but I trust the guy that's telling me this.



Just wondering if anyone can give me more info on this, and perhaps a source for upgraded tubes?

 

[OPoole]

I have never had a problem reusing them but have heard that also.

 

[Bob4x4]

I've seen them leak here is some info for you... ... ... .

NOTE: THIS INFORMATION APPLIES TO THE 5. 9L CUMMINS ELECTRONICALLY INJECTED 24 VALVE DIESEL BUILT PRIOR TO ENGINE SERIAL NUMBER (ESN) 56462592.



DISCUSSION:

Design revisions have been made to the injector connector tube and the new design can be re-torqued multiple times without compromising the seal between the connector tube and high pressure fuel line (Figure 1). The new part number for this connector tube is 05013856AA.



The new connector tube can also be identified by a Cummins part number (3944833) which is stamped on the tube. This identification will help technicians determine if the new tube is on the vehicle or not.



Make sure the "O" ring p/n 05011885AA is replaced when upgrading from the old style to new style connector tubes.



Bob

 

[Nate]

Thanks.



Now who has a good source for them?



I called Cummins and they are going to be a bit over $120 with the o rings.

 

[Nate]

I called the company I bought the injectors from, Midwest Injectors or something like that.



Anyhow, the parts guy has sold about 1100 sets of RV injectors, and he hadn't heard about this problem. He did recomend new O rings though.



Makes me wonder if it's worth the expense to bother??



When a person loosens a line or two to bleed the system and cranks it back down, wouldn't that be "retorquing" it. I haven't had any issues with doing so.



(I'm just trying to justify not spending another $130 for something I may not really need)

 

[Bob4x4]

The new # in my post is a D/C #. I have gotten a few in off the road that leaked after bleeding due to running out. I guaranty all my work,if I put injectors in a truck that has the old style I do the tubes unless the customer oks the gamble. You may or may not have an issue when you do yours. You never know how many times you will need to loosen/tighten them over the life of the truck. You can also get a better deal on them here. http://www.piersdiesel.com/DodgeUSPrice.htm They are a Bosch part,not Cummins.



Bob

 

[Bob4x4]

I called the company I bought the injectors from, Midwest Injectors or something like that.



Anyhow, the parts guy has sold about 1100 sets of RV injectors, and he hadn't heard about this problem. He did recomend new O rings though.



Makes me wonder if it's worth the expense to bother??



)

I don't know how much confidence

i would have in him if he has not heard of this



Bob

 

[turbo torque]

I've changed injectors twice & had head off. Have had no problems with original tubes on my 98. 5 24v

 

[Jetpilot]

I have seen some leak and others not within the ESN mentioned. Some will not leak the first or even second install, but most will start with repeated removal of the lines and tubes.



Doug

 

[V Baker]

TSB on tubes. http://dodgeram.info/tsb/1998/14-01-98a.htm

 

[Nate]

I checked my engine serial # yesterday and it's after the number in the TSB, so I should be good to go.