Ford 723 backhoe

[Michael Morin]

I have a 723 backhoe and it has those special ford threads on the hydraulic lines I need to replace lines and none of the hydraulic shops around here have these fittings any help would be awesome thank you

 

[Andy Wickiser]

Tisco makes an adapter CU878FO that adapts the weird 713/723 hydraulic fittings to 1/2" NPT female. However you have to be very careful that the added length doesn't cause interference problems/ hose crimping, and so forth. This issue has come up many times on this board you should probably do a search. John Bud has a method of using SAE/ORB hoses (from memory, I think that what he uses). You might even be able to get new hose crimped onto the old fittings if you find the right hydraulic shop.

 

[reb-in-pa]

I've used equivalent sized JIC fittings with an o-ring on the shoulder and had good luck so far. There are one or two left to go that I'm suspicious might not have enough mating surface for the o-ring to seal, but my plan is to cross those bridges when I get there.

Good luck.

Ray

 

[LJD]

Just buy the adapters to change it over to standard pipe thread. The ones on there now are British BSP fittings. You need BSP to pipe thread adapters. They cost around $3 each but well worth it. I changed all of my fittings years ago on my Ford hoe. Now I can buy new hoses for $10-$15 each. Both Ford dealers in my area used to have them in stock. If not, order on-line.

 

[LJD]

Here are few links. Any good hydraulic supply place sells the BSPT (British Standard Pipe Thread) and BSPP (Britsh Standard Parallel Pipe) adapters. You'd have to be nuts, or in a real hurry to fix any other way.

This explains further:

BSPT (British Standard Pipe Thread) is similar to NPT except for one important difference. The angle across the flanks of threads (if you sliced the fitting in half long-ways and measured the angle from root to crest to root) is 55 degrees instead of 60 degrees as it is for NPT. Thus an NPT male will fit into a BSPT fitting or vice versa but they will not seal. This is a popular fitting in China and Japan but is very rarely used in North America unless the equipment to which it is attached was imported. Thread sealant is needed to seal the male and female fitting together

BSPP Connections
BSPP (British Standard Parallel Pipe) is most popular in the UK, Europe, Asia, Australia, New Zealand and South Africa. It is a parallel thread fitting that uses a bonded seal ring to do the sealing. This bonded ring seal is sandwiched in-between a shoulder on the male fitting and the face of the female fitting and is squeezed in place. BSPP pressure gauges have a longer male thread and use a copper crush washer that is squeezed in between the bottom of the male fitting and the bottom of the female BSPP hole forming a pressure tight seal. No thread sealant is needed to form a seal

http://www.ralstoninst.com/news/the-difference-between-npt-bspp-and-bspt-seals


http://www.highspeedpc.com/Merchant2/merchant.mv?Screen=PROD&Product_Code=BSPadaptor&Category_Code=Fitting

http://www.metricmcc.com/catalog/Ch8/8-853.pdf

 

[6t6cuda]

I talked with TISCO who made those adapters and they are no longer made.

There is a new adapter CU878MJ that will work it is a 7/8” male JIC x 5/8” o-ring port steel adapter.

They said it was the same thing except it goes to JIC and not NPT.

I have the remaining stock and some of the new ones coming and should be here today (I hope)

 

[Andy Wickiser]

Hey, thanks for the update. Too bad Tisco discontinued the old ones - they could really come in handy sometimes. I'd be interested to know how the new ones work - JIC is superior to NPT in a lot of ways when it comes to hydraulic fittings. Please post your results, there seems to be a fair amount of interest.

 

[john_Bud]

(quoted from post at 04:21:13 05/09/12) Here are few links. Any good hydraulic supply place sells the BSPT (British Standard Pipe Thread) and BSPP (Britsh Standard Parallel Pipe) adapters. You'd have to be nuts, or in a real hurry to fix any other way.

This explains further:

BSPT (British Standard Pipe Thread) is similar to NPT except for one important difference. The angle across the flanks of threads (if you sliced the fitting in half long-ways and measured the angle from root to crest to root) is 55 degrees instead of 60 degrees as it is for NPT. Thus an NPT male will fit into a BSPT fitting or vice versa but they will not seal. This is a popular fitting in China and Japan but is very rarely used in North America unless the equipment to which it is attached was imported. Thread sealant is needed to seal the male and female fitting together

BSPP Connections
BSPP (British Standard Parallel Pipe) is most popular in the UK, Europe, Asia, Australia, New Zealand and South Africa. It is a parallel thread fitting that uses a bonded seal ring to do the sealing. This bonded ring seal is sandwiched in-between a shoulder on the male fitting and the face of the female fitting and is squeezed in place. BSPP pressure gauges have a longer male thread and use a copper crush washer that is squeezed in between the bottom of the male fitting and the bottom of the female BSPP hole forming a pressure tight seal. No thread sealant is needed to form a seal

http://www.ralstoninst.com/news/the-difference-between-npt-bspp-and-bspt-seals


http://www.highspeedpc.com/Merchant2/merchant.mv?Screen=PROD&Product_Code=BSPadaptor&Category_Code=Fitting

http://www.metricmcc.com/catalog/Ch8/8-853.pdf

Those will work (I use them), but the correct fitting is an "air conditioning" fitting. The metal tube is hydraullically formed into a shoulder where the sealing o-ring is placed.

This is an example of the fitting type -- not the correct one.

 

[Tony Jacobs]

Hello Michael , The fittings are a Standard O ring Port Fitting everybody (as in the car makers) have used them for years on Air Conditioning like John-Bud has showed . GM and Chrysler has used them for years on Power Steering lines and they are not BRITISH FITTINGS, they used to be very common, but now they are not, especially that large . Go to DISCOUNTHYDRAULICHOSE.COM and search for part number 41157 the adapters are available in many sizes and they do not cause the interference the TISCO ones do on the 4 boom hoses . If I am not mistaken GENERAL HOSE AND FITTING out of NEW JERSEY , USA was the Designer, Producer and PATENT HOLDER of that fitting design not the British although they may have used with a british/metric thread we did not . Thanks Tony

 

[Tony Jacobs]

Hello Andy , see my post above . Thanks Tony

 

[Michael Morin]

thank you all for your input my local napa ended up having what i needed for an adapter
Mike

 

[Andy Wickiser]

Thanks Tony (and John Bud), finally a positive ID has been posted on the 713/723 fittings! I've wondered about this for years - didn't seem right that Ford had a special fitting for just one type of backhoe. I think this info will help alot of 713/723 owners!

 

[Tony Jacobs]

Hello Michael , I use NAPA a lot and prefer WEATHERHEAD fittings but they said they could get them ? What did you get from NAPA ? Picture or Part number ? Thanks Tony

 

[Tony Jacobs]

Hello Andy , I have also collected up all of the original Ford hoses I could get my hands on over the years but the 4 boom hoses I have to make the most of . I have also had good luck CAREFULLY CUTTING the original hoses apart to save the original fittings to reuse them with new crush collars . What ever works to keep them running . Thanks Tony

 

[6t6cuda]

(quoted from post at 13:52:19 05/09/12) I talked with TISCO who made those adapters and they are no longer made.

There is a new adapter CU878MJ that will work it is a 7/8” male JIC x 5/8” o-ring port steel adapter.

They said it was the same thing except it goes to JIC and not NPT.

I have the remaining stock and some of the new ones coming and should be here today (I hope)

I got them, and they are all the JIC ones, looks like the "old" stock they said they had, was actually the newer ones. They look like they will work fine though...

 

[6t6cuda]

for what it is worth, those are the exact same thing I got when ordering the "new" TISCO number

 

[paulchace]

(quoted from post at 18:01:14 05/11/12) Hello Andy , I have also collected up all of the original Ford hoses I could get my hands on over the years but the 4 boom hoses I have to make the most of . I have also had good luck CAREFULLY CUTTING the original hoses apart to save the original fittings to reuse them with new crush collars . What ever works to keep them running . Thanks Tony

do you have flow restrictors on your lift/crowd circuit or is that a waste of time??
thx