Superduty12v

I was wondering if anyone knew if the 6spds had synchros for the reverse gear? My 6spd is having some really rough notchy shifting and I think it's due to the clutch not fully disengaging because of a older slave cyl. (1996) I think since the slave cyl is older it's not pushing the slave pushrod out enough and not disengaging the clutch completely. Sometimes if I try to go right into reverse when the truck is standing dead still it will grind. If reverse doesn't have a synchro than to me that can only mean the clutch isn't disengagin all the way. With the rest of the gears it's hard to tell becuse it could be the synchros them selves causing the problem. A new slave cyl is $384 bucks from dodge so I'm trying to get this right the first time. I have already changed the tranny fluid 3 different times using dodge fluid and aftermarket so I know it's not that type of fluid I'm using. I have the factory fluid in it right now though. All 3 times I changed the fluid I had a fair amounbt of brass shavings from the synchros floating in the fluid. So I'm just trying to save what synchros are left for the winter so this summer I can put new synchros in when it's nice and warm. Any suggestions ideas would be great. I don't think it makes a difference but I'm using a slave cyl that was on a 5spd tranny. I'm pretty sure all the slaves are the same though so I doubt that's important. Thanks in advance.

-Anthony

bulabula

I don't think they have syncro's for reverse; and you might want to post this in the 24 Valve Engine and Drivetrain forum - not many of us have tranny's on thier last gasps yet.

How many miles on the clutch & tranny? Sounds like a new tranny should be on your Xmas list.

Superduty12v

New clutch, and the tranny I got for $900 from a junk truck. It serves it's purpose but the shifting is annoying. I'm sure it'd last another year or two but like I said... it's just annoying.

RamDan03

The NV-5600 6spd tranny in our rigs are fully syncronized in all forward and reverse gears. One way you can verify this is by moving the shift lever into reverse while the truck is slowly rolling forward. If it wasn't synchronized you would hear all kinds of grinding. This is one of the features I love about this manual transmission.

Here is some more info on our 6spd tranny:

http://dodgeram.org/tech/transmission/NV5600/mt_11.htm

Hoss

Since you have a '96 model, you might try putting this in one of the 2nd Gen forums instead of a the 3rd Gen forum you've got it in now. I don't know if you're 6 speed is the same as the one in the '03 trucks or not, but I assume it's not.

bulabula

Good page. Even mentions the lifetime fill a couple of times.

RamDan03

I'm almost positive that all of the 6 speed trucks use the same NV-5600 tranny. The only differences I have heard of are the input shaft diameter and the clutch diameter. There may be others.

As for the lifetime fluid fill, I am still a bit leery. It's not like changing the fluid would hurt anything. 8)