Unusual Hydraulic Hose and Fittings? Use the Tail Collapse Hack
Channel: HYDRAULIC.ONLINE GOLD COAST
Date: 2022-12-18

Use the Tail Collapse Hack when you have an unusual combination of hose, fittings, and ferrules and you are not sure what crimp dimension to use.

Crimping the hose assembly to the point where Hosetail Just Starts to Collapse has always served me well.

The Tail Collapse Hack is also an option if you are miles from the shop and the trip back to base to get the right / matched parts you need will take too much of your and or your client's time. 

So how do you measure Tail Collapse? 

On larger bore fittings as in this video's example, I use machine shop telescopic gauges,  the advantage of these tools is that you can leave the gauges in the bore while you carefully crimp down on the hose and fitting assembly. 

On smaller bores, The best way is to find a drill bit that fits snuggly inside the hose tail's bore.
You then crimp down in small stages. 
(Important, the drill bit must be removed from the bore while crimping is in progress) keep crimping until a slight resistance is felt whilst moving the drill bit in and out of the hose tail bore.

ALWAYS ENSURE that you have sufficient Ferrule Collar to Hose Tail Shoulder interlock and that the ferrule is always slightly shorter than the hose tail. 

The disadvantage of this method is that it only works on straight Fittings. 

As a final resort and If you have crimped as many hoses as I have, you should have developed a certain sense of what is a good crimp versus a bad crimp.  
Learn to use all your senses. 

Listen to the Sound:  How hard is the crimper pump working to crimp the hose and fitting assembly? 

Sight 
What does the final crimp look like?  Does the ferrule sit neatly on the hose and the tail with a minimum hose to ferrule clearance? 

Feel 
Can you rotate the hose tail inside the hose? This is not always possible when using 1 piece fittings but when using 2 piece fittings this may be an option, test how easy it is to rotate the tails inside the hose.

AUSTRALIA ? copy and click  the links below for products seen in this video and have it posted to your door 
  https://www.hydraulic.online/Reusable-Fittings-for-Hydraulic-Hose-Straight-90%C2%B0-&-45%C2%B0-Elbow-Field-Fit-c30238252

https://www.hydraulic.online/search?keyword=crimp

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