1994.5 - 1997 7.3L Power Stroke Diesel  

Frame Crack!

Thread Tools
 
Search this Thread
 
  #1  
Old 04-19-2011, 01:46 PM
blue66tang95f150's Avatar
blue66tang95f150
blue66tang95f150 is offline
More Turbo
Thread Starter
Join Date: Apr 2003
Posts: 729
Likes: 0
Received 0 Likes on 0 Posts
Frame Crack!

Hey guys i just took my bed off today because I am installing a gooseneck hitch in it. Well when I got it off, i was washing away all the grime, and noticed there is a crack in the frame. It is right next to the rear passenger side shock. There is a little cut out where the shock is right next to the frame, so the shock doesn't hit the frame. Right there is a crack. Anybody ever had this problem? Does anybody have a re-enforcing kit for it? Any ideas how to fix it. I am thinking of going to buy some flat bar and running it along the frame. Any suggestions. Thanks guys.
 
  #2  
Old 04-19-2011, 01:48 PM
Copedawg's Avatar
Copedawg
Copedawg is online now
Lead Driver

Join Date: Aug 2006
Location: Gambrills
Posts: 5,225
Received 12 Likes on 9 Posts
That sux! Got any pics? A picture is worth a 1000 words
 
  #3  
Old 04-19-2011, 02:23 PM
427 fordman's Avatar
427 fordman
427 fordman is offline
Hotshot
Join Date: Feb 2009
Location: Plankinton, SD
Posts: 10,368
Received 53 Likes on 32 Posts
I would try and grind a v in the crack, then weld it. Then I'd plate it on both sides if possible. Pictures would be great.
 
  #4  
Old 04-19-2011, 03:36 PM
Action4478's Avatar
Action4478
Action4478 is offline
Hotshot
Join Date: Aug 2006
Posts: 10,764
Received 34 Likes on 31 Posts
another vote for a plate & a weld ...
 
  #5  
Old 04-19-2011, 05:00 PM
blue66tang95f150's Avatar
blue66tang95f150
blue66tang95f150 is offline
More Turbo
Thread Starter
Join Date: Apr 2003
Posts: 729
Likes: 0
Received 0 Likes on 0 Posts
I will post a picture tonight. I am too busy working on it. l I ended up getting 2 pcs of 1/4 x 7" x4' long flat bar. I am now working on grinding off all the rivets between the spring hangers. I will then bolt the plate in place. Trim it, and then tie it into the goose-neck i am installing. That way it spreads the whole load out. I am doing it to both sides as well.
 
  #6  
Old 04-19-2011, 09:49 PM
blue66tang95f150's Avatar
blue66tang95f150
blue66tang95f150 is offline
More Turbo
Thread Starter
Join Date: Apr 2003
Posts: 729
Likes: 0
Received 0 Likes on 0 Posts
Hey guys here are some pictures of the crack and what I am doing.

I didn't spend as much time with it today as I would like, but I got a good start. Fortunately I found out both sides of the frame are identical, just reversed, so I just need to drill a few more holes, and then replicate my long bracket. Not as pretty as It could be, but I am not all that creative!





 
  #7  
Old 04-19-2011, 09:53 PM
tshrager's Avatar
tshrager
tshrager is offline
Lead Driver
Join Date: Oct 2010
Location: Columbus, Oh
Posts: 5,077
Received 7 Likes on 7 Posts
1/4"? Seems to be overkill, but happy welding
 
  #8  
Old 04-19-2011, 09:54 PM
blue66tang95f150's Avatar
blue66tang95f150
blue66tang95f150 is offline
More Turbo
Thread Starter
Join Date: Apr 2003
Posts: 729
Likes: 0
Received 0 Likes on 0 Posts
Crap, I cant seem to get pictures posted.
 
  #9  
Old 04-19-2011, 10:03 PM
blue66tang95f150's Avatar
blue66tang95f150
blue66tang95f150 is offline
More Turbo
Thread Starter
Join Date: Apr 2003
Posts: 729
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by tshrager
1/4"? Seems to be overkill, but happy welding

I'm not welding it to the frame. I will be bolting it, using existing holes in the frame. I will v-out and then weld the frame a little bit though.
 
  #10  
Old 04-19-2011, 10:22 PM
Mike1996F350's Avatar
Mike1996F350
Mike1996F350 is offline
Freshman User
Join Date: Sep 2008
Location: Alliance / Columbus, OH
Posts: 47
Likes: 0
Received 0 Likes on 0 Posts
I don't know if this caused it or not, but that crack seems to have occurred right where the bolts are for your air bag bracket. That load may have stressed the frame a little more where it was weaker, causing the crack. It looks like you've definitely got the problem under control with all that reinforcement though.
 
  #11  
Old 04-19-2011, 10:27 PM
whack&stack's Avatar
whack&stack
whack&stack is offline
Elder User
Join Date: Aug 2008
Posts: 701
Likes: 0
Received 0 Likes on 0 Posts
if you have a welder why would you do any bolting? just weld the dang thing its gonna be stronger
 
  #12  
Old 04-20-2011, 12:17 AM
blue66tang95f150's Avatar
blue66tang95f150
blue66tang95f150 is offline
More Turbo
Thread Starter
Join Date: Apr 2003
Posts: 729
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by whack&stack
if you have a welder why would you do any bolting? just weld the dang thing its gonna be stronger

Cause welding does not flex nearly as well as bolting it. That is one of the reasons it is always a bad idea to weld on a frame. The welding heats the frame up, making it brittle. Ever wonder why cross members are either riveted in or bolted in? Cause if they were welded in, they will crack within a short amount of time. I had a buddy who welded his cross members in a truck. A few months later (no joke) his fuel tank fell out driving down the highway along with both cross members. Kinda funny, he had to use 5 gallon jugs the rest of his several thousand mile trip.
 
  #13  
Old 04-20-2011, 01:01 AM
oldbird1965's Avatar
oldbird1965
oldbird1965 is offline
Fleet Owner

Join Date: Aug 2004
Location: AZ
Posts: 20,282
Received 125 Likes on 103 Posts
Originally Posted by Mike1996F350
I don't know if this caused it or not, but that crack seems to have occurred right where the bolts are for your air bag bracket. That load may have stressed the frame a little more where it was weaker, causing the crack. It looks like you've definitely got the problem under control with all that reinforcement though.
Now you have me nerous with my air bags and heavy 5er jerking me around on our wonderful smooth highways and bridges!
 
  #14  
Old 04-20-2011, 01:55 AM
whack&stack's Avatar
whack&stack
whack&stack is offline
Elder User
Join Date: Aug 2008
Posts: 701
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by blue66tang95f150
Cause welding does not flex nearly as well as bolting it. That is one of the reasons it is always a bad idea to weld on a frame. The welding heats the frame up, making it brittle. Ever wonder why cross members are either riveted in or bolted in? Cause if they were welded in, they will crack within a short amount of time. I had a buddy who welded his cross members in a truck. A few months later (no joke) his fuel tank fell out driving down the highway along with both cross members. Kinda funny, he had to use 5 gallon jugs the rest of his several thousand mile trip.
well use a stick welder they can withstand alot more shock than mig welds. i must have ran into some really tough frames in my day then i have never had a problem stick welding a frame and having problems down the road.
 
  #15  
Old 04-20-2011, 07:51 AM
RRranch's Avatar
RRranch
RRranch is offline
Posting Guru
Join Date: Nov 2007
Location: West Texas
Posts: 2,158
Likes: 0
Received 0 Likes on 0 Posts
I've welded my gooseneck plates on my last 4 trucks and more than a hundred other trucks over the years. Never had a problem with them yet. We have been using 3/4 inch steel plate on most of them. I've also seen those cracks before, several times, at a couple shops I worked at. I just ground them down and welded them. I use a miller mig welder for everything, not an arc welder.
I can't count the times I had to weld cracks on my last bosses race car too, and weld on mew shock and spring mounts, He had way too much power for that frame. I have never in my life had a weld of mine break.

Oh, on those cracked frames I saw like yours, most of them had some really torn up spring or shackle bushings in them or were ranch trucks. THose guys are really really hard on them.
 


Quick Reply: Frame Crack!



All times are GMT -5. The time now is 05:20 AM.