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  #21  
Old 08-08-2009, 08:12 PM
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Elliott Elliott is offline
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I'm sure there's guys on the M715 Zone that will have parts kicking around you can use Jim.
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  #22  
Old 08-08-2009, 08:38 PM
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http://www.m715zone.com/vb/showthrea...70+brake+parts


http://www.m715zone.com/vb/showthrea...70+brake+parts
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***I can set you up with hydroboost for your brakes: http://www.ifsja.org/forums/vb/showthread.php?t=106056
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  #23  
Old 08-08-2009, 09:18 PM
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jpcoutts jpcoutts is offline
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Quote:
Originally Posted by Elliott
I'm sure there's guys on the M715 Zone that will have parts kicking around you can use Jim.


Thanks Elliott. I did a little looking over there and there was a post that seems to confirm that the return springs are the same as other J trucks. One of the members used them on his M715 as direct replacements. Still nothing about drums though. I'll keep after it!
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Jim C
'67 J3000 Dually
'86 J20
'79 CJ5(in pieces)
'86 CJ7 Doesn't need anything(so why do I have it?)
Correction- it just needed a water pump!
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  #24  
Old 08-09-2009, 08:34 AM
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Ah, I see the difference and will post some pics. The dually D70 has drums that mount on the backside of the hub with the studs going through the hub flange. On the M715 the drum mounts over the hub and the studs go through the hub flange and then the brake drums... if I am looking at the schematic correctly. (Edit: this info is correct) I'll post some pics. I believe this is correct though, on the M715 it would have been designed this way to be able to remove the brake drums separately from the hub/axle shaft for quick tear down. On the drw you had to take it all apart to get the drum off. The D70 M715 spindles have the same dimensions (from the measurements I have (which I can share) as the DRW D70 so you could potentially upgrade to the M715 hub/drum assembly.

DRW D70:
http://www.fullsizejeeps.com/jeeps/f...orDRW-Axle.JPG

M715 D70 Drum assembly:
http://i361.photobucket.com/albums/o...umAssembly.jpg

Link to Gladiator D70 Spindle Measurements:
http://www.fullsizejeeps.com/jeeps/files/Users/Elliott/Spindle.jpg

M715 D70 Stub/spindle Measurements:
Everything looks the same as the Gladiator D70 except two dimensions:
- The diameter of the inner bearing diameter surface is 2.250" (the Gladiator D70 is 2.22).
- The diameter of the seal surface is 2.750" (the Gladiator D70 is 2.68).

http://www.fullsizejeeps.com/jeeps/files/Users/Elliott/D70-M715-Stub.JPG
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*** I am collecting pics and info on any factory Jeep Dually trucks from the J-Series at the new Jeep Dually Registry.
***I can set you up with hydroboost for your brakes: http://www.ifsja.org/forums/vb/showthread.php?t=106056

Last edited by Elliott : 08-09-2009 at 08:52 AM.
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  #25  
Old 08-09-2009, 01:02 PM
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jpcoutts jpcoutts is offline
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You hit it exactly Elliott. If I have to go the M715 hub/drum route the question will be whether or not the shoes, wheelcyls., and other parts will be the same. I'm almost to the point that I'm willing to take a chance that my drums are useable and move forward with plans to just replace the shoes, wheelcylinders and small parts, which will work great unless the drums are too thin. There's a fellow at the Zone that is looking for some spring part #'s for me which I hope will confirm that the standard J3000 springs will work.
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Jim C
'67 J3000 Dually
'86 J20
'79 CJ5(in pieces)
'86 CJ7 Doesn't need anything(so why do I have it?)
Correction- it just needed a water pump!
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  #26  
Old 08-09-2009, 03:39 PM
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Elliott Elliott is offline
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Are you aware those rear wheel cylinders are likely unavailable? The M715zone.com has threads describing what year F250 wheel cylinders to use and how to fit them to your drum backing plates.
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*** I am collecting pics and info on any factory Jeep Dually trucks from the J-Series at the new Jeep Dually Registry.
***I can set you up with hydroboost for your brakes: http://www.ifsja.org/forums/vb/showthread.php?t=106056
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  #27  
Old 08-13-2009, 08:22 PM
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Tornado230 Tornado230 is offline
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For what it is worth, I ran across someone who has a complete rear axle from a dual-wheel FC-170. Don't know if it is the same or not.
Contact me for more info.
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  #28  
Old 08-14-2009, 02:13 PM
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jpcoutts jpcoutts is offline
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Thanks for the tip, I sent you a PM. FWIW I almost hate to scavenge parts from a FC170 DRW which I think must be the only Jeep truck more scarce than a J truck dually like mine!
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Jim C
'67 J3000 Dually
'86 J20
'79 CJ5(in pieces)
'86 CJ7 Doesn't need anything(so why do I have it?)
Correction- it just needed a water pump!
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  #29  
Old 08-14-2009, 04:16 PM
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Elliott Elliott is offline
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I think it is the same but you will definately want to verify that the WMS is the same if you are going to want the whole axle for possible use. I've seen conflicting info on the WMS for those and that was on the FC site... I believe it uses the same hubs/drums and has the same offset on the pinion... unlike the M715 in those three regards.
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*** I am collecting pics and info on any factory Jeep Dually trucks from the J-Series at the new Jeep Dually Registry.
***I can set you up with hydroboost for your brakes: http://www.ifsja.org/forums/vb/showthread.php?t=106056
Reply With Quote
  #30  
Old 08-15-2009, 08:25 AM
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jpcoutts jpcoutts is offline
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I'm just looking for parts since I'm sure the WMS is different. I may simply ask the seller to measure it.
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Jim C
'67 J3000 Dually
'86 J20
'79 CJ5(in pieces)
'86 CJ7 Doesn't need anything(so why do I have it?)
Correction- it just needed a water pump!
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