Bye Bye Front Drums
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Lead Driver
Joined: Apr 2011
Posts: 6,399
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From: El Dorado, Arkansas
Been there and done that on removing the drum/drum pressure differential valve and installed an NOS disc/drum combination valve, as posted on page 4 on 10-16-2014 in post #49 of this thread.
https://www.ford-trucks.com/forums/1...l#post14747725
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Lead Driver
Joined: Apr 2011
Posts: 6,399
Likes: 40
From: El Dorado, Arkansas
D0TZ1225A.....1 3/8" I.D....3 9/64" O.D.
C9AZ1225A.....1 17/32" I.D....3 9/64" O.D.
C9AZ1225A replaced by D8AZ1225A.
D8AZ1225A replaced by D8AZ1225B "OR" D8AZ1225C.
D8AZ1225B includes D8AZ1225A,D3TZ1180A collar,C9AZ1177A seal.
D8AZ1225C includes D8AZ1225A,C9AZ1180A collar,C9AZ1177A seal.
D3TZ1180A is 1 1/2" I.D and 2 3/8" O.D. (from memory rather wide)
C9AZ1180A is 1 1/2" I.D. and 2 7/16" O.D. (from memory rather narrow)
NOTE. The car slide shows 1 1/2" I.D on them but the Truck slides show them at 1 17/32".
C9AZ1225A.....1 17/32" I.D....3 9/64" O.D.
C9AZ1225A replaced by D8AZ1225A.
D8AZ1225A replaced by D8AZ1225B "OR" D8AZ1225C.
D8AZ1225B includes D8AZ1225A,D3TZ1180A collar,C9AZ1177A seal.
D8AZ1225C includes D8AZ1225A,C9AZ1180A collar,C9AZ1177A seal.
D3TZ1180A is 1 1/2" I.D and 2 3/8" O.D. (from memory rather wide)
C9AZ1180A is 1 1/2" I.D. and 2 7/16" O.D. (from memory rather narrow)
NOTE. The car slide shows 1 1/2" I.D on them but the Truck slides show them at 1 17/32".
The D0AZ axle bearing is for a '70 - up E100.
On my 28-spline axles, the bearings and retainers are still pressed on and I was trying to measure the area sticking out just above the retaining ring so, there may be some slight taper there that would read 1-1/2" but, actual measurement under the bearing/ring may actually be 1-17/32".
My 28-spline axles may possibly have the same bearing journal I.D. as these 31-spline axles but, again, I don't know of any 31-spline axles that were available in a 9-inch rear end in the '68-'72 trucks --except for the ones that had a 9-3/8" rear end.
This again seems to point to my theory that the 31-spline axle journals (possibly) being increased in diameter, starting in 1970 and thus the possible reason for the increase in I.D. for the D0TZ bearing(?).
Hotshot
Joined: Mar 2013
Posts: 14,255
Likes: 199
From: Phoenix, Az.
Ahh haaa, I see what's wrong now. The 1-3/8" x 3-9/64" bearing number should be D0AZ instead of D0TZ. (DOTZ is 1-5/8" x 3-9/64").
The D0AZ axle bearing is for a '70 - up E100.
On my 28-spline axles, the bearings and retainers are still pressed on and I was trying to measure the area sticking out just above the retaining ring so, there may be some slight taper there that would read 1-1/2" but, actual measurement under the bearing/ring may actually be 1-17/32".
My 28-spline axles may possibly have the same bearing journal I.D. as these 31-spline axles but, again, I don't know of any 31-spline axles that were available in a 9-inch rear end in the '68-'72 trucks --except for the ones that had a 9-3/8" rear end.
This again seems to point to my theory that the 31-spline axle journals (possibly) being increased in diameter, starting in 1970 and thus the possible reason for the increase in I.D. for the D0TZ bearing(?).
The D0AZ axle bearing is for a '70 - up E100.
On my 28-spline axles, the bearings and retainers are still pressed on and I was trying to measure the area sticking out just above the retaining ring so, there may be some slight taper there that would read 1-1/2" but, actual measurement under the bearing/ring may actually be 1-17/32".
My 28-spline axles may possibly have the same bearing journal I.D. as these 31-spline axles but, again, I don't know of any 31-spline axles that were available in a 9-inch rear end in the '68-'72 trucks --except for the ones that had a 9-3/8" rear end.
This again seems to point to my theory that the 31-spline axle journals (possibly) being increased in diameter, starting in 1970 and thus the possible reason for the increase in I.D. for the D0TZ bearing(?).
) Most of the tag numbers listed on page two shows a version of before and after serial "J30,001" in 1970. But the difference being the diff bearings not the axle bearings.
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Lead Driver
Joined: Apr 2011
Posts: 6,399
Likes: 40
From: El Dorado, Arkansas
Well, looks like you are part right. Section 40.3 page one does also list the D0AZ bearing at 1 3/8". So the D0TZ is listed incorrectly. I am shocked this mistake was never corrected. (I heard Alan rolling his eyes ) Most of the tag numbers listed on page two shows a version of before and after serial "J30,001" in 1970. But the difference being the diff bearings not the axle bearings.
) Most of the tag numbers listed on page two shows a version of before and after serial "J30,001" in 1970. But the difference being the diff bearings not the axle bearings.My 31-spline axles are the same 29 (and whatever fractions of an inch) as my 28-spline axles and they have the correct 5-on-5.5" lug pattern so, they're definitely from a truck. (From a 9-inch? --I don't think they were available in a 9-inch. From a 9-3/8" rear end? Most likely since that's the only application I know of that the 31-spline axles came in and if it's the case, it comes right back to something must have changed on the bearing journals too between '69 and '70. (???).
Were there any 9-inch truck rear ends that came with 31-spline axles, other than the 9-3/8" truck rear ends? (To my knowledge, there wasn't but, that's what I'm trying to determine).
The casting number on the center register of my 31-spline axles is C8TW5E (best I remember --I'm at work and the axles are not in front of me to actually look at). Best I remember, my 28-spline axles have C8TWD on their center registers.
Hotshot
Joined: Mar 2013
Posts: 14,255
Likes: 199
From: Phoenix, Az.
WFF-A,-B,-C tags (9 3/8" 4 pinion traction lok) are parts list 182. In 182 shows axle D0TZ4234A,31 spline, included bearing D0TZ1225A.
WFF-D (9 3/8" open) and WDM-H,-AH,-J,-AJ (9" open) are parts list 91 along with a ton others. Parts list 91 shows some 28 spline shafts and C8TZ4234B,31 spline,68/72.
SOOOOO, your axles came out of WFF-D or WDM-H, or-J, or -AH, or -AJ. All these tag numbers are listed as taking the Large axle bearing C9AZ1225A,D8AZ-A,-B,-C (1 17/32") I noted above.
WFF-D (9 3/8" open) and WDM-H,-AH,-J,-AJ (9" open) are parts list 91 along with a ton others. Parts list 91 shows some 28 spline shafts and C8TZ4234B,31 spline,68/72.
SOOOOO, your axles came out of WFF-D or WDM-H, or-J, or -AH, or -AJ. All these tag numbers are listed as taking the Large axle bearing C9AZ1225A,D8AZ-A,-B,-C (1 17/32") I noted above.
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Lead Driver
Joined: Apr 2011
Posts: 6,399
Likes: 40
From: El Dorado, Arkansas
WFF-A,-B,-C tags (9 3/8" 4 pinion traction lok) are parts list 182. In 182 shows axle D0TZ4234A,31 spline, included bearing D0TZ1225A.
WFF-D (9 3/8" open) and WDM-H,-AH,-J,-AJ (9" open) are parts list 91 along with a ton others. Parts list 91 shows some 28 spline shafts and C8TZ4234B,31 spline,68/72.
SOOOOO, your axles came out of WFF-D or WDM-H, or-J, or -AH, or -AJ. All these tag numbers are listed as taking the Large axle bearing C9AZ1225A,D8AZ-A,-B,-C (1 17/32") I noted above.
WFF-D (9 3/8" open) and WDM-H,-AH,-J,-AJ (9" open) are parts list 91 along with a ton others. Parts list 91 shows some 28 spline shafts and C8TZ4234B,31 spline,68/72.
SOOOOO, your axles came out of WFF-D or WDM-H, or-J, or -AH, or -AJ. All these tag numbers are listed as taking the Large axle bearing C9AZ1225A,D8AZ-A,-B,-C (1 17/32") I noted above.
Now, it seems we're getting somewhere.
I knew there had to have been some sort of change, I just didn't know how it applied.Thanks for your help, Jeffey.
Hotshot
Joined: Mar 2013
Posts: 14,255
Likes: 199
From: Phoenix, Az.
You're welcome Steve. I don't mind at all helping out the folks on FTE in between answering my Wholesale Parts phone calls. It's my job. But trust me, nobody wishes Ford didn't have so darn many choices than a Ford Parts man. 
I'm rolling my eyes with you guys on that one.
I'm rolling my eyes with you guys on that one.
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Lead Driver
Joined: Apr 2011
Posts: 6,399
Likes: 40
From: El Dorado, Arkansas
You're welcome Steve. I don't mind at all helping out the folks on FTE in between answering my Wholesale Parts phone calls. It's my job. But trust me, nobody wishes Ford didn't have so darn many choices than a Ford Parts man.
I'm rolling my eyes with you guys on that one.
I'm rolling my eyes with you guys on that one.
I would rather have had the larger version but, these axles are beefier than the 28's they replaced and the main objective was to just be able to run a 31-spline Traction-Lok differential.
I haven't had a 28-spline Traction-Lok 9-inch 3rd member in over a decade and my half-dozen or so 9-inch 3rd members all have 4-pinion 31-spline Traction-Lok differentials in them.
....on to getting the RIGHT axle bearings, now that I know what I'm dealing with.....thanks again!
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Hotshot
Joined: Mar 2013
Posts: 14,255
Likes: 199
From: Phoenix, Az.
I guess luck was on my side that BOTH axles arrived with the SAME SIZE axle journals. It could have easily been one of each size on them, since one came from Arkansas and the other came from Arizona.
I would rather have had the larger version but, these axles are beefier than the 28's they replaced and the main objective was to just be able to run a Traction-Lok differential.
I haven't had a 28-spline Traction-Lok 9-inch 3rd member in over a decade and my half-dozen or so 9-inch 3rd members all have 4-pinion 31-spline Traction-Lok differentials in them.
....on to getting the RIGHT axle bearings, now that I know what I'm dealing with.....thanks again!
I would rather have had the larger version but, these axles are beefier than the 28's they replaced and the main objective was to just be able to run a Traction-Lok differential.
I haven't had a 28-spline Traction-Lok 9-inch 3rd member in over a decade and my half-dozen or so 9-inch 3rd members all have 4-pinion 31-spline Traction-Lok differentials in them.
....on to getting the RIGHT axle bearings, now that I know what I'm dealing with.....thanks again!
Thread Starter
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Lead Driver
Joined: Apr 2011
Posts: 6,399
Likes: 40
From: El Dorado, Arkansas
I suppose whatever the latest, greatest version is of the bearing and retaining ring available would be the best route to go. As long as the bearing is the correct 1-5/64" width and has a 1-17/32" I.D. and a 3-9/64" O.D.
Hotshot
Joined: Mar 2013
Posts: 14,255
Likes: 199
From: Phoenix, Az.
NOS PARTS LTD shows 2 of them at $12.50 each! 972-937-2201.
************************************************** ****
others that have at least 2 in stock:
Lincoln Land.....727-446-2193.
Green sales......800-543-4959.
Dennis Carpenter Ford......800-476-9653.
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Lead Driver
Joined: Apr 2011
Posts: 6,399
Likes: 40
From: El Dorado, Arkansas
In that case I pick D8AZ1225C since the other one has a Dent part number collar.
NOS PARTS LTD shows 2 of them at $12.50 each! 972-937-2201.
************************************************** ****
others that have at least 2 in stock:
Lincoln Land.....727-446-2193.
Green sales......800-543-4959.
Dennis Carpenter Ford......800-476-9653.
NOS PARTS LTD shows 2 of them at $12.50 each! 972-937-2201.
************************************************** ****
others that have at least 2 in stock:
Lincoln Land.....727-446-2193.
Green sales......800-543-4959.
Dennis Carpenter Ford......800-476-9653.
The guy is trying to determine what the correct part number is for the bearing retainer rings, that are the match for these bearings. Other than knowing they are illustration part #1180 in the exploded diagram, I don't know what the part number for their compatibility is with the D8AZ1225C bearing (?).
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Lead Driver
Joined: Apr 2011
Posts: 6,399
Likes: 40
From: El Dorado, Arkansas
Evidently, the rest of the shiznit has been robbed out of the boxes or, they have broken it up into individual pieces.
I'll give them the numbers and see what their response is.
Thanks, Jeff.
I'll give them the numbers and see what their response is.
Thanks, Jeff.
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Lead Driver
Joined: Apr 2011
Posts: 6,399
Likes: 40
From: El Dorado, Arkansas
They said they have all the parts, individually (of what's supposed to be together as a set).
Bearings are $12.50 ea. Seals are $10.00 ea. Bearing collars are $4.00 ea. This means the sets have been broken up.
I told them I need (2) bearings and (2) collars.
I suspect axle seal rubber technology has probably improved since 1969 and I don't think I want rubber axle seals that old, that have probably been sitting in a (likely) non-climate controlled warehouse. I have new seals anyway.
They're supposed to get back with me, to confirm that the bearings and collars are on hand.
Bearings are $12.50 ea. Seals are $10.00 ea. Bearing collars are $4.00 ea. This means the sets have been broken up.
I told them I need (2) bearings and (2) collars.
I suspect axle seal rubber technology has probably improved since 1969 and I don't think I want rubber axle seals that old, that have probably been sitting in a (likely) non-climate controlled warehouse. I have new seals anyway.
They're supposed to get back with me, to confirm that the bearings and collars are on hand.