zf6 damage
Thread Starter
|
New User
Joined: Dec 2010
Posts: 8
Likes: 0
zf6 damage
hi there,
first of all looking for some advise.
Was pullin passat home 50 miles round trip this saturday and downshifted into 3rd.
As the gear engaged it let out a loud clunk locking into 3rd gear. was able to find neutral after a day but slammed into gear just idiling. can find nuteral on pattern but not actually get there....also drags right rear tire upon disengaging clutch. any advise would be helpful. 1999&half psd zf6 1 ton single
Thanks
Tony
first of all looking for some advise.
Was pullin passat home 50 miles round trip this saturday and downshifted into 3rd.
As the gear engaged it let out a loud clunk locking into 3rd gear. was able to find neutral after a day but slammed into gear just idiling. can find nuteral on pattern but not actually get there....also drags right rear tire upon disengaging clutch. any advise would be helpful. 1999&half psd zf6 1 ton single
Thanks
Tony
Super Moderator
Joined: Aug 2003
Posts: 25,479
Likes: 742
From: Isanti, MN
Hi Tony,
Sounds to me like your clutch has failed. The fact that it "drags" the rear wheels upon disengagement implies to me that the clutch isn't disengaging properly. I believe the clutch in these trucks is hydraulic, so you may have low fluid or a problem with your master or slave cylinder. The clutch itself could also have failed.
Completely different application, but I had the clutch fail on my '07 Kenworth a few years ago. The symptoms were much like you described, and when pushed the clutch in to come to a stop the truck wanted to keep on going. Was hard as hell to get into gear, and I had to shut the engine off to shift to 1st from a stop.
DON'T drive it like this, if you're not up to fixing it yourself it needs a tow to the shop. If the failure is in your clutch you will do internal transmission damage trying to drive it like that!
Sounds to me like your clutch has failed. The fact that it "drags" the rear wheels upon disengagement implies to me that the clutch isn't disengaging properly. I believe the clutch in these trucks is hydraulic, so you may have low fluid or a problem with your master or slave cylinder. The clutch itself could also have failed.
Completely different application, but I had the clutch fail on my '07 Kenworth a few years ago. The symptoms were much like you described, and when pushed the clutch in to come to a stop the truck wanted to keep on going. Was hard as hell to get into gear, and I had to shut the engine off to shift to 1st from a stop.
DON'T drive it like this, if you're not up to fixing it yourself it needs a tow to the shop. If the failure is in your clutch you will do internal transmission damage trying to drive it like that!
Thread Starter
|
New User
Joined: Dec 2010
Posts: 8
Likes: 0
zf6 damage.
Hi there,
Thanks for the input. Ijust put a south bend in it 2000 miles ago and it disengages fine but the gears are all messed up and it is locked in some gear. I can use clutch to start truck but as soon as I engage clutch it will die ...seems to be stuck in 3rd or 5th . And neutral is lost in the pattern? On the stick it seems to be in neutral but no luck. Gonna tear it apart this week and examine the clutch
Thanks for the input. Ijust put a south bend in it 2000 miles ago and it disengages fine but the gears are all messed up and it is locked in some gear. I can use clutch to start truck but as soon as I engage clutch it will die ...seems to be stuck in 3rd or 5th . And neutral is lost in the pattern? On the stick it seems to be in neutral but no luck. Gonna tear it apart this week and examine the clutch
Thread Starter
|
New User
Joined: Dec 2010
Posts: 8
Likes: 0
Was good when I did my clutch. Will find out this week. Its my work truck but also my build truck. So im kinda glad it happend now at 400 hp 800tq i have 400 k on tranny and it seemed to fail. Any oil suggestions for when I put a new tranny in?
Thread Starter
|
New User
Joined: Dec 2010
Posts: 8
Likes: 0
Trending Topics
Cargo Master
Joined: Jan 2012
Posts: 3,053
Likes: 21
From: Pittsburgh, PA
If you do consider AMSOIL, they sell a yearly dealer membership for $20. It gets you about 25% off all products. I bought it the last 2 years and I buy all my fluids and greases from them now and it really pays off. Plus you get the top of line stuff.
I've never rebuilt a ZF6, but I did do an M5OD from a Ranger and manuals are remarkably simple.
I am not sure if this is true in Super Duty, but if you pull the shifter boot off, lift up the carpet or rubber flooring and remove the trans tunnel cover, you might be able to take the top plate off the transmission without actually removing it from the truck to diagnose the problem. I had a ZF6 in an 04, but I never had to do this. Pulling the shifter off will expose the shift rails that the shift forks ride on. There may even be a slim chance that you could repair the transmission without taking it out of the truck. There are a lot of ifs in that though...
Edit: Disregard that, I just looked at a photo and it does not have a top cover to remove. Sorry for the false hope...
I've never rebuilt a ZF6, but I did do an M5OD from a Ranger and manuals are remarkably simple.
I am not sure if this is true in Super Duty, but if you pull the shifter boot off, lift up the carpet or rubber flooring and remove the trans tunnel cover, you might be able to take the top plate off the transmission without actually removing it from the truck to diagnose the problem. I had a ZF6 in an 04, but I never had to do this. Pulling the shifter off will expose the shift rails that the shift forks ride on. There may even be a slim chance that you could repair the transmission without taking it out of the truck. There are a lot of ifs in that though...
Edit: Disregard that, I just looked at a photo and it does not have a top cover to remove. Sorry for the false hope...
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 10 Fords at 2026 Carlisle Ford Nationals
Joe Kucinski
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Senior User
Joined: May 2006
Posts: 237
Likes: 3
tonz,
Jasper has the units for 2WD but not 4WD. Use Mercon V or Motorcraft full synthetic ATF manual trans fluid (P/N XT-M5-QS).
ZF6's load from the rear and are complex units to rebuild. Jasper sends them to ZF to rebuild.
Jasper has the units for 2WD but not 4WD. Use Mercon V or Motorcraft full synthetic ATF manual trans fluid (P/N XT-M5-QS).
ZF6's load from the rear and are complex units to rebuild. Jasper sends them to ZF to rebuild.
Thread
Thread Starter
Forum
Replies
Last Post
sancochojoe
1948 - 1956 F1, F100 & Larger F-Series Trucks
22
Jul 19, 2006 07:36 AM
nebi
Explorer, Sport Trac, Mountaineer & Aviator
5
Apr 13, 2004 08:57 PM