1983 John Deere Model 7 Backhoe

The correct configuration with the hoses out the top (not sides) can be seen in the pictured John Deere ad.

This is our JD750 tractor.
It is equipped with a:
JD 67 Front Loader
JD #7 Rear Backhoe
JD 603 six-foot Rotary Mower (AKA: Brush / Bush Hog)




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Tractor controls


 

Below - Caution:  Misrouted hoses can be pinched, crimped, cut and destroyed.
A very costly mistake made by those who don't test their work.


These hoses are misrouted and will need to be moved. When the arm is fully extended, it pinches them hard and will cut them. These hoses are misrouted and will need to be moved. When the arm is fully extended, it pinches them hard and will cut them These hoses are misrouted and will need to be moved. When the arm is fully extended, it pinches them hard and will cut them These hoses are misrouted and will need to be moved. When the arm is fully extended, it pinches them hard and will cut them These hoses are misrouted and will need to be moved. When the arm is fully extended, it pinches them hard and will cut them

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Our #7 Backhoe had been extensively modified by the original owner.
In an apparent attempt at upping it's capacity, he replaced an original JD cylinder with a much larger one.
To accomodate this, he welded on additional angle iron and pieces.
One of the things he apparently did not get right was the side-to-side swing of the arm after modification.
This led to destroyed hoses and connectors.
To cure the problem, a home-styled stop assembly was welded on the bottom of the arm.
Let's see how this does for us over time.

Below: Modified side-to-side stops.

Below - Caution:  Before using the backhoe after having hoses replaced
Slowly TEST TEST TEST to assure that swinging it to the left or right does not pressure the connectors.
Another costly mistake I experienced immediately after it returned from the shop.
Hoses were replaced but adjustment of the arm not tested.
Swinging the boom to the left fractured and destroyed connectors.   $$$

Below: The modified John Deere #7 Backhoe shortly after we purchased the tractor

When the arm is swung tight to one side or the other, it will actually hit and destroy the connectors. This must be fixed before use.
When the arm is swung tight to one side or the other, it will actually hit and destroy the connectors. This must be fixed before use When the arm is swung tight to one side or the other, it will actually hit and destroy the connectors. This must be fixed before use When the arm is swung tight to one side or the other, it will actually hit and destroy the connectors. This must be fixed before use
 
When the arm is swung tight to one side or the other, it will actually hit and destroy the connectors. This must be fixed before use When the arm is swung tight to one side or the other, it will actually hit and destroy the connectors. This must be fixed before use When the arm is swung tight to one side or the other, it will actually hit and destroy the connectors. This must be fixed before use

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Below - The main hydraulic cylinder on the backhoe pictured below was installed incorrectly after maintenance in the past.
When I next have this fixed or replaced, the hoses should not connect on the side.
The unit should have been installed with the hoses on the top as the side installation contributes to hose crimping and destruction.

The correct configuration with the hoses out the top (not sides) can be seen in the pictured John Deere ad.




I am interested in hearing your experiences with 
your John Deere #7 Backhoe.
Any tips on maintenance?

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All personal comments, pictures copyright 1996-2012 - R. Linwood (4L RANCH)
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Since 20 April, 2012:


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