zf-5 strength
Logistics Pro
Joined: Sep 2007
Posts: 3,737
Likes: 179
From: Western Mass
Hate to say told you so, but it didn't sound like a transmission problem to me. Right after I swapped my truck to 4wd, the driveshaft I had gotten from the junyard was dented (but looked fine). Going slow, no problems, but after 35 or so, it was imbalanced enough to vibrate pretty badly.
Its hard to tell from the picture, but that looks like a bunch of rust/corrosion and pitting on the u-joint cross. If it is, thats been slowly going over time and no way it would be result of a recent tranny issue. One other thing with driveshafts, if you tested it in gear, without the parking brake on, chances are the truck was loading the driveline, causing it to jam up a bit and feel secure. Its better to check them with the parking brake on, and truck in neutral, so it can actually wiggle around some. If you get what I mean.
Replace that u-joint and see what happens.
Its hard to tell from the picture, but that looks like a bunch of rust/corrosion and pitting on the u-joint cross. If it is, thats been slowly going over time and no way it would be result of a recent tranny issue. One other thing with driveshafts, if you tested it in gear, without the parking brake on, chances are the truck was loading the driveline, causing it to jam up a bit and feel secure. Its better to check them with the parking brake on, and truck in neutral, so it can actually wiggle around some. If you get what I mean.
Replace that u-joint and see what happens.
Thread Starter
|
Elder User
Joined: Nov 2009
Posts: 793
Likes: 0
i decided to drop the tranny anyway as it is time for a new clutch. The bad new is the bolts were so tight on the tranny mount that when i put my cheater bar on and gave all the pressure i could i broke the case of the tranny. It sheered the whole part off that the bolt screws into. i guess i will be using my spare tranny after all.
Thread Starter
|
Elder User
Joined: Nov 2009
Posts: 793
Likes: 0
i did replace all the u-joints and the center support bearing as had some play in it also. all the other u-joints were in good shape and had lots of greese in them but i figured while i was at it i will just do all of them. Did the front drive line as well since of those were bad also. I also picked up a complete 4" lift made by superlift today for $250. It only has 4000 miles on it. Shocks and all, i thought it was a good deal.
More Turbo
Joined: Nov 2010
Posts: 521
Likes: 6
From: Cincinnati, OH
i decided to drop the tranny anyway as it is time for a new clutch. The bad new is the bolts were so tight on the tranny mount that when i put my cheater bar on and gave all the pressure i could i broke the case of the tranny. It sheered the whole part off that the bolt screws into. i guess i will be using my spare tranny after all.
Thread
Thread Starter
Forum
Replies
Last Post
CherryF350
1999 - 2016 Super Duty
3
Jun 24, 2018 07:05 AM
ox1969
1987 - 1996 F150 & Larger F-Series Trucks
5
Jun 15, 2015 03:29 PM
Ford4Life7.3
1994.5 - 1997 7.3L Power Stroke Diesel
10
Jan 31, 2013 10:58 AM
