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dripley

nv 5600 and exhaust brake

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i came a cross an old thread on CF discussing pros and cons of the nv5600. the only thing unusual in it was a single post by someone stating you should only use an exhaust brake in 5th gear. no mention as to why or any responses to the post. i am just wondering if any of you have ever heard of any reason not to use an ebrake on a nv5600.:shrug:

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makes no sense to me. obviously, the higher the engine rpm, the more braking HP is created.In my 4500 I'd use it in just about every gear..Now, do keep in mind that high hp engine-braking in lower gear is "reverse-loading" the gear sets, but still, never had an issue with the 4500. I don't have an EB on my 5600 (yet) but plan to do so, as soon as funds are available.

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i have noticed when mine is on i hear, for lack of a better term, a faint clinking noise whenever it is on. i had noticed it with my original tranny also. i thought it was the tranny since the original went out on me. it was going out before the ebrake install. i still hear the same noise. it is faint but present. just have not been able to detirmine what i am hearing. it is definately due to the ebrake being on. i have read alot about the 5600 and never saw a statement like that any wher else.

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It's not the ebrake solenoid you hear clicking, is it? I know my Banks clicked; it was mounted to the firewall so was quite noticeable..

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i dont think so. the noise is constant the whole time the eb is on. very faint almost like a rattle but clinking. if that makes any sense.

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i dont believe the noise is coming from the brake. it is faint but still audible and i can only think it is coming from the drive line somewhere up front. i heard it with the old tranny and the new to me tranny, so i am not sure where the noise is. the guy on CF said you should not use an eb on a nv5600 and i had never heard that anywhere before. i know alot of people with them have them so i am not sweating that one. the noise has me somewhat baffled. same noise in every geari love mine. one of the best mods i have installed. i came over the blue ridge mtns. and used my brakes twice because people slowed in front of me. stayed at or below the limit no problem.

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the only time mine is off is when i have the cruise on. when i installed it i had a rebuilt ecm and the cruise did not work. so i did not connect it to the cruise control. one of these days i am going toget out the instructions and hook that up. just got used to turning it off when i cruise. seems like a small problem compared to everything else i have to catch up on with limited time at home.

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I have the faint tick noise at high R's when dropping gear with the exhaust brake. Still use it in all gears even with R's as high as 3K on the tach and drop the exhaust brake on it. The tick noise with disappear as the R's fall off below 2K.As for usage you can use the exhaust brake in all gears and all R's of the tach... Even the owner manual says that the best hold back power is near 3K R's...

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i use mine in all gears. stays on all the time. just saw one reference to only using it in 5th by some guy over on cf. there were no replies to the post so i thought i would ask yall if you had ever heard of it. evidently no one has.my intructions said best braking would occur at rpm's of 2k or greater. i have dropped mine in to 3rd while empty and it will push into the dash at 2500. works very well.:thumbup2:

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I have used mine in every gear except reveres. I suppose there might be an application for that too sometime. :lol:

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mine does not activate until you are going 30mph(gotta get around that one day), then stays on down to 15mph and shuts off. need reverse od to make mine work.

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With a trailer, I can see where reverse eBrake would be helpful. I use mine to speed up warm up on cold mornings or to keep the EGT up if have to idle for very long.

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I have used it when backing down some steep hills, 4 Lo, Reverse, EB... never touch the brake!I will also use mine to warm the motor up, but I like to wait until my coolant is about 60° so that the rings have time to get warmed up before the soot party begins. I use either 1,000 or 1,100 rpms to get to 60° and it never seems to take too long, then the EB and it's hot quick!I don't like to idle it longer than 2-3 minutes thou, but there are certain activities where it's needed.. But for those extended events I add a little Cetane boost to improve the low load combustion.

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mine does help with warm up it comes on when idleing until it reaches 140*. nice helper on cold mornings.

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I do not run all the time with it on. But when in town I run it on all the time when pulling my fifth wheel. I also use it to help warm the Eng up When on the HWY I turn it off till I am ready to exit. I allso use it in all gears.

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I'm sure the reason that person suggested to use the EB only in 5th gear on the 5600 was probably referring to the fact that 5th gear is direct input shaft to output shaft connection. That will reduce or eliminate reverse loading and will also reduce heat buildup. In saying that, I dont think everyday driving and using the EB in the other gears is going to be a problem. I tend to only use my EB in 4th gear (direct) while towing with my 4500.

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I think that most of the problems to be had with the NV5600 are due to the fact that these issues probably arose because the fluid wasnt enough to submerge the 6th gear assembly. Im sure that if from the beginning of time with the NV5600 that if they were filled with that extra quart of fluid most of the known issues would not have occured. But then again this isnt the reality.I will just add an extra quart on top of a full fill (upper fill hole) and be happy with no worries. I use my EB in all gears at any given time for any reason, i dont do heavy towing but i have not had any issues either.

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i wil still use mine in all gears. it does not seem to have any adverse effects on any thing for me and from yall it seems the same. i run mine with 1 quart extra in the tranny. i have also seen some folks putting some anti slip in the fluid. not sure about that one. any of yall doing that?

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