Backhoe Mounting HWO4X Backhoe to Jinma 284

[Smalljobs]

I have two other threads on this one but they are related to self import and hose connection problems. These threads are http://www.tractorbynet.com/forums/chinese-tractors/223303-hw04x-bh-hose-connection-problem.html and http://www.tractorbynet.com/forums/chinese-tractors/207390-placing-order-jinma-factory.html.

I ordered direct from Jinma a frame mounted BH to fit my 284. I expected an HWO3 or JWO3 or something like that but received one that says HWO4X on the nameplate. I'm still not sure if this is a 6' or 7' hoe.

FRAME - The frame is much more robust than others I've seen. The front end of the frame has only one pair of holes so there is no adjustment fore and aft. The span across the rear of the frame is too wide and we had to weld in thick spacers. We bolted everything in place before welding.

At the front end we had to adapt some brackets from Tommy at Affordable. They didn't quite give us full overlap under the Koyker towers but they should be adequate.

Finally after getting the frame mounted and then sorting out the pump and hose connection problems, I was able to attach the hoe. I knew in advance there may be problems in reaching the controls and RonMar has been helping me with details of his own excellent solution.

Remember, there was no forward and rearward adjustment of the frame. The oil tank is 9-3/4" away from the face of the pump. This makes it impossible to use the swivel seat turntable that came with it.

The next step is figure out how and where to locate the seat as well as possibly flipping the controls around like Ron did. Another TBN member, Kyle, went through this with his Jinma 454 and he's been kind enough to send me some photos. I'd welcome any solutions to this seat location problem. I'm even toying with the idea of connecting a new base to the 3 point arms and use them for height adjustment.

Lastly, how do I confirm if this is a 6' or 7' hoe?

 

[Bob Rooks]

Lastly, how do I confirm if this is a 6' or 7' hoe?

Somewhere I have the spec drawings, but the measurement between the boom pivot pin and the bucket pivot pin (on the end of the jib) should tell you roughly what you have (buckets are the same for both).

 

[Smalljobs]

Bob, I've got 50" from boom pin at base of hoe to dipper pivot pin. Then I have another 35" from dipper pivot pin to bucket pin. I might have them reversed but they are certainly 50" and 35" and total 85".

 

[Bob Rooks]

I guess I should have clarified - that would be fully extended.
However, 85" translates to 7'. So there you have it.

 

[Smalljobs]

Everything is working fine. I still have no seat and Jinma recognized the problem (they sent me an HWO4X instead of HWO3X). They are shipping me a conmplete 3 point seat BH seat pedestal and I'll modify it.

I've extended a water line by 20 feet and buried another item for another 15 feet and am really happy. I also dug up a stone wall and moved it. It just purrs along around 1,000 - 1200 rpm and works great. The notorious valves are actually quite manageable at this speed. Pressure is left at factory setting around 2200 psi.

Once I get the seat mounted I'll decide on turning around the valve cabinet (like RonMar did) or just leave it alone.

A few small items broke and Jinma is replacing them.

I'm sure glad I have the big boxed in subframe!

 

[Smalljobs]

THUMB: Dug over 75 ft of quick drainage trenches and was amazed how fast it went. Based on the unearthed boulders I dug up, I can see the need for a thumb to move all of this. Am thinking of a welded on design. Have any of you attached a weld on or bolt on to the 7 Ft China backhoe?

 

[Bob Rooks]

It's in the works for my LiTW.

 

[Smalljobs]

"I still have no seat and Jinma recognized the problem (they sent me an HWO4X instead of HWO3X). They are shipping me a complete 3 point seat BH seat pedestal and I'll modify it"

I received the seat pedestal and new baseplate - see attached. The problem is that the 3 point has no oil tank and the seat pedestal in the current form is right over the tank filler. Will solve this over the winter. Lately I've just been sitting on top the backrest of the tractor seat.

I also discovered a 2 X 6 across the fenders works fine! If I use a 2 X 4, I've got a spring seat

 

[smince]

This may or may not help you, but I thought I would offer some pictures of my Jinma 254 seat setup. The prior owner had a frame-mounted backhoe but sold it separately. The seat has a simple swivel post (easily fabricated post within a post) with a retaining pin for 2 possible fixed seat positions. It then slides on rails front to back so that when spun to the back you can shift it closer to the hoe.

 

[Smalljobs]

I've got that swivel seat already because I ordered it with the BH but then they sent me the HW04 seven foot hoe with big subframe. The seat is too high and too far away. Even if I extended the seat rails, it would be too high.