Rear Axle question
Thread Starter
|
Old School Hot Rodder
Joined: Feb 2006
Posts: 6,472
Likes: 11
From: Exmore, VA
Rear Axle question
I am posting this for a friend. He purchased a 2004 screw FX4 with the 5.4L 3 valve engine. He discovered recently that his rear axle is probably toast. The pinion has visible end float and it is noisey as all getout. The axle code is H9 which is supposed to be 3.73 limited slip. As near as he can tell it is the 9.75" axle, but after removing the rear cover to allow axle removal to see if the wheel bearings were bad, he discovered it is not a limited slip. In trying to locate a used axle we are being asked if it is a "new edge" truck. What is the difference and is there a way to determine exactly what is in it? Carfax showed no significant repairs. Thanks,
Elder User
Joined: Dec 2007
Posts: 680
Likes: 0
From: Michigan
I think what they are asking is if it's the new body style. In 2004, Ford produced both the Heritage (old body style- PN96) and the new body style. That's the only thing I can think of as new edge. Shock mountings are different, so it is important to get the correct axle. Have him check his door code under axle and that will tell for sure what axle it's suppose to be. It's a 2 digit code and if you post back, someone will tell you what it's suppose to be. I wonder if the original owner had work done on the axle...
Elder User
Joined: Mar 2004
Posts: 616
Likes: 1
From: Florida Parishes, LA
It does sound like they are talking about what body style he has. Where did you get the H9 axle code from. A quick search on it shows that it should have 3.55 LS gears, but it also shows that it should be an older 8.8.
Former Vendor
Joined: May 2007
Posts: 1,811
Likes: 1
I think what they are asking is if it's the new body style. In 2004, Ford produced both the Heritage (old body style- PN96) and the new body style. That's the only thing I can think of as new edge. Shock mountings are different, so it is important to get the correct axle. Have him check his door code under axle and that will tell for sure what axle it's suppose to be. It's a 2 digit code and if you post back, someone will tell you what it's suppose to be. I wonder if the original owner had work done on the axle...
i agree
send me your vin i'll tell ya.
Ed
Thread Starter
|
Old School Hot Rodder
Joined: Feb 2006
Posts: 6,472
Likes: 11
From: Exmore, VA
Update, first as stated in my post, it is code H9, second, it is a super cab, not screw, I was working from memory on the body style. I went over yesterday evening and we verified 3.73 ratio, pulled the cover and found it is a limited slip, owner was only familiar with the 8.8 limited slip and saw no preload spring, so assumed it was not a limited slip. It is a 9.75 axle and ring and pinion are not damaged. He ordered pinion bearings, crush sleeve and seal. We will replace them next week after they arrive. As near as we can tell, it is a new edge truck. I think we have a handle on it, thanks for the replies.
MMNC (SS)(Ret)
Joined: Mar 2004
Posts: 11,604
Likes: 149
From: SE Georgia
97-04: front fenders are rounded and look like vehicles from 30's
04+: front fenders are squared, and the doors have the superduty cutout by the mirrors
Junkyard...easier IMO than messing with gear offset and backlash and all the other mysterious arts of the rear axle
04+: front fenders are squared, and the doors have the superduty cutout by the mirrors
Junkyard...easier IMO than messing with gear offset and backlash and all the other mysterious arts of the rear axle
Posting Guru
Joined: Jul 2004
Posts: 1,479
Likes: 4
2004 Fx4 came standard with LS and 3:73 on a 9.75 rear if i recall. In 04 the Heritage retained the old style, but was not available in the FX4 version.
Trending Topics
Thread Starter
|
Old School Hot Rodder
Joined: Feb 2006
Posts: 6,472
Likes: 11
From: Exmore, VA
Update, no luck finding an axle. We pulled it down Monday (FWIW, I have built a number of different rear ends including MG, and brand C), and found biggest noise source was right side carrier bearing. New bearings and set it up, rolled a pattern and it looked real good. There is a slight noise cruising at 40-45mph which was the speed that created the most noise before. Owner said not bad, it is in the minor annoyance level and can be ignored by having a normal radio volume level. Apparently there is a little gear set damage from the bad bearings, and we did flush everything and clean the ABS sensor. Thanks for the input from all who replied, this group is awesome for information!
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
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
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
Thread
Thread Starter
Forum
Replies
Last Post
Wolfman2405
Clutch, Transmission, Differential, Axle & Transfer Case
2
Sep 13, 2003 09:13 PM