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  1. #1
    Gold Member Smalljobs's Avatar
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    Jinma 284

    Default HW04X BH Hose Connection Problem

    Maybe someone has come across this before. I'm trying to attach my new HW04X supply hose to the pump but the hose has a 90 degree end with a male thread, 18 mm in diameter. None of the two adapters that came with it can accept this male hose. Since the pump face only has four holes and a smooth bore, I can't thread it into the pump housing.
    Attached Thumbnails Attached Thumbnails -supply-hose-jpg   -adapters-jpg   -pump-face-jpg  
    Steve Anderson

    Jinma 284LE w/Creeper/Koyker 160 Loader/Markham Toothbar, Frame mounted HWO4X backhoe, 64" John Deere 3 PH Snow blower,3 PH splitter, Bro-Tek thumb, Jinma 8" chipper, Loader mounted Meyer plow

  2. #2
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    Default Re: HW04X BH Hose Connection Problem

    I have this fitting that will bolt to the pump and goes to a JIC 8, but you will still have to get the end of your hose changed to a JIC to match it

    https://affordabletractorsalesco.com...ategory=&scid=



    Tommy
    Affordable Tractor Sales
    "Your Jinma Parts Superstore"
    Home of compact Jinma, Foton, and Koyker Tractors and Parts, Wood Chippers, Backhoes - Affordable Tractor Sales Company
    Attached Thumbnails Attached Thumbnails -4a48e964c350fdsc00002-jpg  

  3. #3
    Gold Member Smalljobs's Avatar
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    Jinma 284

    Default Re: HW04X BH Hose Connection Problem

    Tommy - Tks. To All - Tommy has already bailed me out twice with this project.

    I'm considering the same idea but taking it a step further. The local hydraulic shop won't touch the hose so I've looked at Ronald's JIC 6 adapters. Folllowing that I can make up a whole new hose with reusable ends. I'd go right from the valve assembly back to the pump with my own hose. At the pump I'll use something like you showed me. I already machined up a spacer block that allows me to add a pressure gage next to the pump so that I can adjust the pressure relief valve. It won't be difficult to add and NPT and JIC connections.

    I'm not yet familiar with minimum orifice size JIC 6 versus 8 and how this relates to what I have now in the hose?
    Steve Anderson

    Jinma 284LE w/Creeper/Koyker 160 Loader/Markham Toothbar, Frame mounted HWO4X backhoe, 64" John Deere 3 PH Snow blower,3 PH splitter, Bro-Tek thumb, Jinma 8" chipper, Loader mounted Meyer plow

  4. #4
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    Default Re: HW04X BH Hose Connection Problem

    Steve, I also have this hydraulic block that bolts to the pump, that has NPT and could be drilled and tapped for a gauge very easy

    Tommy
    Affordable Tractor Sales
    "Your Jinma Parts Superstore"
    Home of compact Jinma, Foton, and Koyker Tractors and Parts, Wood Chippers, Backhoes - Affordable Tractor Sales Company
    Attached Thumbnails Attached Thumbnails -469bac0d493ed109-jpg  

  5. #5
    Gold Member Smalljobs's Avatar
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    Default Re: HW04X BH Hose Connection Problem

    Tommy, that block looks like it will take the 18 mm dia male thread that's on the end of my hose. If so, I'm alll set and I won't have to make up a new hose. Whoops - you said NPT. Is that large port on the top NPT or straight 18 mm?

    I'll phone Jerry this morning.
    Last edited by Smalljobs; 10-21-2011 at 07:40 AM. Reason: typo
    Steve Anderson

    Jinma 284LE w/Creeper/Koyker 160 Loader/Markham Toothbar, Frame mounted HWO4X backhoe, 64" John Deere 3 PH Snow blower,3 PH splitter, Bro-Tek thumb, Jinma 8" chipper, Loader mounted Meyer plow

  6. #6
    Gold Member Smalljobs's Avatar
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    Jinma 284

    Default Re: HW04X BH Hose Connection Problem

    I now have a positive ID on the hose that came with the backhoe. Jinma first sent me the WRONG PUMP. It was an engine mounted pump and not the correct BH pump. So it it only makes sense they'd send me the matching hose for the incorrect pump... making it now the wrong hose for the correct pump.

    Here is a picture of the hose from the backhoe connected to the wrong pump. It's a straight thread.

    I need the 1) correct BH supply hose or 2) some sort of adapter, or 3) make up my own new hose with JIC on each end and then adapt JIC to the correct pump.
    Attached Thumbnails Attached Thumbnails -positive-id-jpg  
    Steve Anderson

    Jinma 284LE w/Creeper/Koyker 160 Loader/Markham Toothbar, Frame mounted HWO4X backhoe, 64" John Deere 3 PH Snow blower,3 PH splitter, Bro-Tek thumb, Jinma 8" chipper, Loader mounted Meyer plow

  7. #7
    Gold Member Smalljobs's Avatar
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    Jinma 284

    Default Re: HW04X BH Hose Connection Problem

    I think I'm all set now and will post pictures when done. Thanks to the guys at Affordable and Ronald at Ranch Hand Supply, I can get this solved.

    Affordable came up with the right adapter block but I decided to make up my own pressure hose. Ronald supplied adaptors that I will use on the valve assembly block. I'll make up my own hoses with reusable ends from Discount Hydraulic Hose. I'm also adding a return filter based on an earlier link from Bob Rooks.

    It would have been cheaper to use Affordable's block but I prefer to move away from the Chinese hose entirely on the pressure side because it gives me more options in the future.
    Steve Anderson

    Jinma 284LE w/Creeper/Koyker 160 Loader/Markham Toothbar, Frame mounted HWO4X backhoe, 64" John Deere 3 PH Snow blower,3 PH splitter, Bro-Tek thumb, Jinma 8" chipper, Loader mounted Meyer plow

  8. #8
    Gold Member Smalljobs's Avatar
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    Default Re: HW04X BH Hose Connection Problem

    While awaiting hose parts and fittings I swapped ideas with Graham at Bolton Power, local Jinma dealer, and we wondered if I could swap front or back cover plates from the two pumps I have? If I took the rectangular mounting plate off the correct CBN-E310 backhoe pump and mounted it to the other pump CBN E3, I could then use the wrong hose that came with the backhoe AND have more flow. The bolt patterns holding the pump bodies and cover plates seem the same although the engine mounted pump has smaller diameter bolts.

    Has anyone ever tried to mix and match these? The engine pump delivers more volume and the body length is slightly longer, otherwise everything looks the same.
    Attached Thumbnails Attached Thumbnails -back-pumps-jpg   -font-pumps-jpg  
    Steve Anderson

    Jinma 284LE w/Creeper/Koyker 160 Loader/Markham Toothbar, Frame mounted HWO4X backhoe, 64" John Deere 3 PH Snow blower,3 PH splitter, Bro-Tek thumb, Jinma 8" chipper, Loader mounted Meyer plow

  9. #9
    Veteran Member Bob Rooks's Avatar
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    Default Re: HW04X BH Hose Connection Problem

    Quote Originally Posted by Smalljobs View Post
    While awaiting hose parts and fittings I swapped ideas with Graham at Bolton Power, local Jinma dealer, and we wondered if I could swap front or back cover plates from the two pumps I have? If I took the rectangular mounting plate off the correct CBN-E310 backhoe pump and mounted it to the other pump CBN E3, I could then use the wrong hose that came with the backhoe AND have more flow. The bolt patterns holding the pump bodies and cover plates seem the same although the engine mounted pump has smaller diameter bolts.

    Has anyone ever tried to mix and match these? The engine pump delivers more volume and the body length is slightly longer, otherwise everything looks the same.
    Are the gears the same size (length, diameter, shaft diameter) and the same number of teeth? You will find that you already have more than ample flow. In fact we'll be talking restrictors soon.
    Yuchai 306R dozer, Mustang 2040 skid steer, Mitsubishi MS035 Mini-Ex with four buckets and a rake, Trimble equipped 7' Dual Dozer with twin GCR-2 laser receivers, and a LiTW BH7600 back hoe (sold).

  10. #10
    Gold Member Smalljobs's Avatar
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    Jinma 284

    Default Re: HW04X BH Hose Connection Problem

    I think but am not certain all is the same except gear length. I think I will leave it all alone and wait for my JIC connectors and Ranch Hand adapters to arrive and then I'll use the standard BH pump and just replumb the pressure and return lines. The 3/8" hose JIC connector orifices are only slightly larger than the OEM Chinese orifice measured at the hose end.
    Steve Anderson

    Jinma 284LE w/Creeper/Koyker 160 Loader/Markham Toothbar, Frame mounted HWO4X backhoe, 64" John Deere 3 PH Snow blower,3 PH splitter, Bro-Tek thumb, Jinma 8" chipper, Loader mounted Meyer plow

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