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AC 715 Loader Backhoe - Rear Axle/Tire Service
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orangeman View Drop Down
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Joined: 12 Sep 2009
Points: 1682 		Post Options Post Options   Thanks (0) Thanks(0)   Quote orangeman Quote  Post ReplyReply Direct Link To This Post Topic: AC 715 Loader Backhoe - Rear Axle/Tire Service
    Posted: 12 Sep 2023 at 10:51am
Morning All:  As mentioned in the heading am servicing the rear tires on my 715 LBH. 

Am missing a few of the OEM lug bolt washers, (2" O.D. x .750" I.D. x .250" thick) that hold the rim onto the lug.  There is no part number for the washers in the AC Parts Manual - no surprise there.  

It has been mentioned several  times in previous posts that the rear axle is Ford.  But what specific model? Am thinking that maybe ford used the same thick washers on their 5000 or 6000 rear axles but am not sure about that. 

Can anyone advise on the specific rear differential and axle used on the 715.  Thanks in advance for any insights. 

Respectfully ~ Orangeman
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steve(ill) View Drop Down
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Joined: 11 Sep 2009
Location: illinois
Points: 77901 		Post Options Post Options   Thanks (0) Thanks(0)   Quote steve(ill) Quote  Post ReplyReply Direct Link To This Post Posted: 12 Sep 2023 at 12:50pm
McMaster Carr sells a similar 3/4 inch thick washer... but is 1-7/8 diameter instead of 2 inch..
Like them all, but love the "B"s.
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orangeman View Drop Down
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Points: 1682 		Post Options Post Options   Thanks (0) Thanks(0)   Quote orangeman Quote  Post ReplyReply Direct Link To This Post Posted: 12 Sep 2023 at 2:11pm
Steve:  Thanks for the excellent reference.  Assuming my dimensions are good -  the washer could be made of basic AR 36 1/4 plate steel and case hardened.   

These washers are large enough that they look like they could be used in bridge or skyscraper construction to bolt various steel assemblies together.  I have a few contacts in Case Construction and Anderson Equipment that might be able to peruse through their washer parts bin and come up with something.   Caterpillar used a similar  washer over the wheel lug - but is smaller in O.D. like the McMaster reference above. 

As always, appreciate the sage insights! 

Respectfully, ~ Orangeman  


Edited by orangeman - 12 Sep 2023 at 2:13pm
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Calvin Schmidt View Drop Down
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Points: 4515 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Calvin Schmidt Quote  Post ReplyReply Direct Link To This Post Posted: 28 Sep 2023 at 8:56am
The dealer told that the 715's used the same rear end as the Ford 4500 TLB 
Nothing is impossible if it is properly financed
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orangeman View Drop Down
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Points: 1682 		Post Options Post Options   Thanks (0) Thanks(0)   Quote orangeman Quote  Post ReplyReply Direct Link To This Post Posted: 29 Sep 2023 at 7:42am
Calvin:  Thanks for the insights on this.  Am setting up a cross reference to manufacturers that supplied parts for the AC 715 backhoe.  Came across some AC Technical Service documents that had the 715 listed and referenced in 1973.  Other AC documents show late 74. 

The last reference to the  CDS trademark which assumed the 715 design with changes was in 1993. 

Respectfully ~ Orangeman
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Calvin Schmidt View Drop Down
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Points: 4515 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Calvin Schmidt Quote  Post ReplyReply Direct Link To This Post Posted: 29 Sep 2023 at 12:56pm
I had a 715 and currently have a 81 715B (since 1987). The B series got the self leveling loader and soft shift reverser. Also the loader control was moved to floor, the instrument was redesigned, and the hood became tapered. To my knowledge the only change in the C and D series was the engine. There are rumors of the CDS version having a Cummins. Have a friend with a Cummins powered CDS 708 forklift purchased new from our local A-C Industrial dealer who is now our JCB dealer 
Nothing is impossible if it is properly financed
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orangeman View Drop Down
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Points: 1682 		Post Options Post Options   Thanks (0) Thanks(0)   Quote orangeman Quote  Post ReplyReply Direct Link To This Post Posted: 02 Oct 2023 at 8:49am
Morning Calvin:  Yes, the rumors are true that the CDS 715 backhoe used a Cummins 4B engine, as in non turbo.  My brother and I looked at one last winter.    Unfortunately we had to pass on it as the wiring and steering column had literally been chopped out of the machine.   It had the extend a hoe feature on it and looked to have originally been a Conrail owned machine. 

CDS sunset their trademark on their Rough Terrain Forklift and Backhoe line in 1993 according to legal documents. 

 The 700 series Rough Terrain Forklifts soldiered on past the days CDS and were further developed with John Deere engines as part of Ingersoll - Rands Construction Division. 

Respectfully ~ Orangeman
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