loud clunk in reverse engagement.
#22
12-17-2009 | 11:59 PM
Registered User
Joined: Dec 2009
Posts: 8
Likes: 0
im not saying that its not your trans but have checked the t-case? or the rear diff? if your timing was off on your pinnion and ring gears that would cause a clunk as well. another thing that would cause it is te tulip on the rear diff i would actually start at the diff myself by pulling off the driveline and if there is back and fourth play or up and down play that could most likely be your problem. 1 more thing to consider other then the tranny problem with dodge they also have probs with the t-cases it could just be worn out causeing a clunk! but if i was you i would deffinatly start at the diff it dont take long and its the cheapest way to start rather then goin out and buying a new trans!
#23
12-18-2009 | 12:33 AM
Grand Champion
Joined: Apr 2008
Posts: 7,055
Likes: 5
From: Lee County, North Carolina
im not saying that its not your trans but have checked the t-case? or the rear diff? if your timing was off on your pinnion and ring gears that would cause a clunk as well. another thing that would cause it is te tulip on the rear diff i would actually start at the diff myself by pulling off the driveline and if there is back and fourth play or up and down play that could most likely be your problem. 1 more thing to consider other then the tranny problem with dodge they also have probs with the t-cases it could just be worn out causeing a clunk! but if i was you i would deffinatly start at the diff it dont take long and its the cheapest way to start rather then goin out and buying a new trans!
Its normal. Wont hurt anything and IS inherent to being a dodge.
The drive shell and the direct drum couple together. The drive shell has notches cut into it, the direct drum has tabs made onto it, these peices fit together, the drive shell will wear over time, the direct drum eats into it making clearance.
The direct drum is applied in reverse. so when you have your foot on the break in neutral or park, the drive shell is stopped, as is the direct drum because it is not applied, only the forward drum is turning, but the clutches are not applied.
So when you put the shifter into reverse the rear band comes on, thats ok, because the reverse drum is not turning, BUT the direct clutch comes on, when you apply those clutches they grab the forward drum hub that the direct clutches are splined to.
As i told you the forward drum is turning, because it is splined into the TC which is always turning, so when the direct drum grabs the spinning forward drum, it stops it from turning, but is a very abrupt stop and the forward drum will pull the direct drum into the stopped driving shell. When the shell is new you wont hear anything, but after the shell wears there will be enough clearance to hear a loud clunk.
The drive shell and the direct drum couple together. The drive shell has notches cut into it, the direct drum has tabs made onto it, these peices fit together, the drive shell will wear over time, the direct drum eats into it making clearance.
The direct drum is applied in reverse. so when you have your foot on the break in neutral or park, the drive shell is stopped, as is the direct drum because it is not applied, only the forward drum is turning, but the clutches are not applied.
So when you put the shifter into reverse the rear band comes on, thats ok, because the reverse drum is not turning, BUT the direct clutch comes on, when you apply those clutches they grab the forward drum hub that the direct clutches are splined to.
As i told you the forward drum is turning, because it is splined into the TC which is always turning, so when the direct drum grabs the spinning forward drum, it stops it from turning, but is a very abrupt stop and the forward drum will pull the direct drum into the stopped driving shell. When the shell is new you wont hear anything, but after the shell wears there will be enough clearance to hear a loud clunk.
#24
12-18-2009 | 10:58 AM
Veteran
Joined: Jun 2009
Posts: 385
Likes: 0
From: FL,Right on the AL line
im not saying that its not your trans but have checked the t-case? or the rear diff? if your timing was off on your pinnion and ring gears that would cause a clunk as well. another thing that would cause it is te tulip on the rear diff i would actually start at the diff myself by pulling off the driveline and if there is back and fourth play or up and down play that could most likely be your problem. 1 more thing to consider other then the tranny problem with dodge they also have probs with the t-cases it could just be worn out causeing a clunk! but if i was you i would deffinatly start at the diff it dont take long and its the cheapest way to start rather then goin out and buying a new trans!
JEEEZE!Thankyou!
#25
11-11-2019 | 03:36 PM
Registered User
Joined: Nov 2019
Posts: 1
Likes: 1
Same problem clunk for months
Finally found out the what the clunking was and i dont know how i missed it , had someone put truck in reverse while i watched underneath i suddenly realized the rearend was twisting up and down while putting the truck in reverse then drive, back and forth the u bolts had come loose over time, this was going on for the last year the whole time I owned it, if you dont have someone to help do what my neighbor did for 15 seconds , find somebody ! Hope this helps.
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KENT426 (05-16-2023)
#26
11-12-2020 | 06:40 PM
Veteran
Joined: Dec 2019
Posts: 257
Likes: 14
From: Texas
So tonight I noticed something that my wife says she's always heard...
There's a loud clunk when I switch from Park to Reverse, sounds kind of like when you pull the emergency/park brake release after having engaged the brake all the way to the floor, but from under the truck.
It's not the U joints as I have just replaced them. Not sure what it is. Truck runs fine in reverse and drive, trans shifts just fine and engages, just a loud clunk when I shift from P to R.
Anybody else's do this? I thought maybe I don't have the parking sprag in the right spot, but I don't think it would engage at all if it wasn't in there correctly. My wife said she's always heard it.
There's a loud clunk when I switch from Park to Reverse, sounds kind of like when you pull the emergency/park brake release after having engaged the brake all the way to the floor, but from under the truck.
It's not the U joints as I have just replaced them. Not sure what it is. Truck runs fine in reverse and drive, trans shifts just fine and engages, just a loud clunk when I shift from P to R.
Anybody else's do this? I thought maybe I don't have the parking sprag in the right spot, but I don't think it would engage at all if it wasn't in there correctly. My wife said she's always heard it.
