NV5600 - Grinding into Reverse

[RedSmoke]

Hi guys-

Just wondering if anybody's 6-speeds grind real bad when going into reverse? Mine never used to do this but lately has gotten bad (19k miles). I used to feel two "notches" when shifting to reverse, but now I either get a bad grinding or a "jolt" to the driveline as it engages. If I take it for warranty, is the dealership going to try to rebuild it or is it a "replace" item?



Thanks-

RedSmoke

 

[mberry]

Does it do it in any of the forward gears?

 

[DPKetchum]

If a manual trans is hard to get into first or reverse and when going into reverse slowy and it hangs and makes a noise like gears grinding(will also do this in first also but not as extreme and or you can pump the clutch pedal and all of a sudden its easy then something with the CLUTCH ASSY is binding and not fully realising. But ALL manual trans reverse is NOT synchronised and go into another gear first and over to reverse etc. same as old three speeds on the column. 1st then reverse or it catches/grinds.

 

[JHardwick]

I agree that hitting another gear prior to hitting reverse will help, I do it all the time.



But, if you getting a grinding and then a "jolt", your clutch needs adjusting! It's not fully disengaged.

 

[DPKetchum]

Lots of newer trucks/cars have NO adjustment on the clutch. Only the pedal can be moved. I've come across several trucks/cars that the clutch disc or pilot bearing etc. was binding. Had lots of NEW Nissans several years ago that we had one or two a week hard to get into first and reverse. If you moved the shifter SLOW into reverse the gears were still turning and it was obvious. Took a new disc and we replaced pilot bearings also. I think the final outcome was a disc problem.

 

[JTeague]

I work at a Dodge dealer and have worked on several trucks with the problem you describe. All of the trucks had a worn or damaged reverse blocker ring. The reverse in a NV 5600 IS sychronized contrary to popular belief. The good news is that the trans does not have to come out of the truck to repair, just the tailhousing portion can be removed to access the reverse synchronizer. As far as warranty repair goes, you can forget about getting a whole new trans from DC. They will only repalce a trans if the cost of repair exceeds 70% of the price of a new unit. Hope this helps.

 

[barbwire]

Mine does the same thing you have described

 

[Patriot_RAM]

Yup, same here. Mine did it with the stock clutch and with my SBC DD clutch. I changed to Redline and it helped a bit, but it still does it from time to time at 32k.

 

[jwilliams3]

Bump 3rd or 1st and you will get it right in there.

 

[one8upcb]

Mine does the same thing. I might just have to pay J Teague a visit so he can fix it.

 

[JTeague]

one8upcb, I forgot to tell you that when you bought your truck from me that the warranty is null and void. Just kidding. Did your buddy get that PM3 on his truck yet?

 

[one8upcb]

yeah we picked it up about 3 and hooked it up.

 

[SixSpeed5]

Sorry to bring up an old thread, but this is almost exactly what my trans is doing.



I would say that 60% of the time it grinds quite badly trying to get it into reverse. 25% of the time it doesn't want to go in unless I start to let out the clutch a hair, then it pops right in. About 15% of the time it goes in with no noise or issues.



I have tried going in from various gears, I have tried keeping the clutch in for an extended amount of time before trying to go into reverse, but I can't seem to find an instance where it is better or worse.



Any ideas on where I should start? Thanks!

 

[rbattelle]

Sounds to me like possibly a bad pilot bearing that's keeping the input shaft rotating even with the clutch depressed.

Are you also having trouble getting into 1st? DPKetchum's post is what I'm thinking.

-Ryan

 

[SixSpeed5]

I thought that could be the issue, but I haven't really had any problems getting into any of the forward gears. I will pay close attention to it tomorrow and see what I come up with.

 

[Patriot_RAM]

Mine has done this since it was pretty much new. Leaving the clutch in, try grabbing 2nd, then first, then reverse. That helps mine quite a bit. AMSOIL or Redline have helped some people with grinding into reverse, third, and sometimes 5th. Maybe sometimes, it's just the fact that the fluid was changed. Of course, this is pretty dependent on each situation!

Hope this helps!

Patriot_RAM

 

[Lumpy]

Mine does the same thing. Not all of the time, but more often than not. I just shift to 4th before I shift to reverse and it goes right in, every time.

 

[steved]

As noted, try shifting into a forward gear each time then shift into reverse... if it stops doing it, then your drive line is likely dragging (bad/dry pilot bearing, warped pressure plate, etc).

 

[TboneMan]

As noted, try shifting into a forward gear each time then shift into reverse... if it stops doing it, then your drive line is likely dragging (bad/dry pilot bearing, warped pressure plate, etc).

So you're saying that if grinding is a somewhat regular occurrence when going directly to reverse but the grinding does not occur when you shift into reverse from another gear (e. g. , 3rd) is an indicator of clutch issues?

 

[steved]

So you're saying that if grinding is a somewhat regular occurrence when going directly to reverse but the grinding does not occur when you shift into reverse from another gear (e. g. , 3rd) is an indicator of clutch issues?

Yes, potential clutch issues... something is still turning in the trans to make the grinding, when the clutch is disengaged.