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Dynahoe Backhoe

Discussion in 'Tractor/Loader/Backhoes' started by Cold-Oil, Nov 10, 2019 at 5:26 AM.

  1. Cold-Oil

    Cold-Oil Member

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    Occupation:
    Mechanic
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    Alaska
    I have a 1975 Dynahoe 160 and am looking for the Wagner part number for the wheel cylinders. I would like to have them on hand when I disassemble the rear wheel planetary units to repair the brakes. Thanks in advance for any help!
     
  2. Ronsii

    Ronsii Senior Member

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    Not sure if these apply to yours without a serial number.... but here is page 45-46 of the parts manual for my 160.
    dynahoe160-partsbook-pg45.jpg dynahoe160-partsbook-pg46.jpg
     
  3. Cold-Oil

    Cold-Oil Member

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    Thanks so much for your efforts! I do have this manual and wish they would of also used the manufactures part numbers. I am purchasing a master cylinder($300 plus $80 shipping) ouch! then I am pretty sure I will have to replace the wheel cylinders also. But one thing at a time!!
     
  4. Ronsii

    Ronsii Senior Member

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    These are generic cylinders... any decent truck parts place(with older guys there) will be able to get rebuild kits for them... of even the makers parts for a fraction of that.

    Some of the older dealers used to be able to cross the hydynamic munbers to OEM also, unfortunately the ones around here went out of business a few years ago.
     
  5. Mother Deuce

    Mother Deuce Senior Member

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    Really liked Bob Fray...I found a Wagner master cylinder number for a 160. Wagner #17095 in a forum from 2005 see images. These guys we’re getting their brake parts at Napa by bringing them in and doing physical comparisons with Wagner stock. It is said that Minnparr has the numbers and parts. There is also a Dynahoe owners group on Yahoo that exchanges info. 43F50D5A-0743-437A-87C0-88323478B2D9.jpeg A9E1E066-8BD6-43D5-AB64-FE743A0E9F90.jpeg 8C74BFE4-0215-4992-9AF4-D0FB423EB8EF.jpeg
     
    Last edited: Nov 11, 2019 at 8:34 AM
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  6. 1693TA

    1693TA Well-Known Member

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    Occupation:
    FAA Radar Engineer, (Retired)
    Location:
    Farmington IL
    Remove that master cylinder, remove the internal snap ring which retains the guts and pull it apart. Hone the bore, install new rubber cups and teflon washers, (easily available at "older" parts stores) and put it back together.

    I had a 160 Dynahoe w/353 Detroit Diesel. Purchased it just to get it running and sale but had to rebuild the service brakes along the way. Very simple built machine using mostly off the shelf parts. Bucyrus kept it simple with them. Mine had a Borg-Warner transmission, Commercial-Shearing main hydraulic pump, and used Wagner service brake parts. I purchased everything needed at the then locally owned Carquest auto parts store.
     
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  7. Tinkerer

    Tinkerer Senior Member

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  8. Ronsii

    Ronsii Senior Member

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    Yeah MD, Fray equipment was the go to place for many years :) I got a few things there and plenty of info.

    The issue with my master cylinder and quite a few others so I found from digging around was the reed valve on the 'bone' would fracture and even though you could get the seal kits all day I was never able to find the hard parts(I really didn't look that hard... had too much else going on) but yes, most of the parts are generic simple truck parts.

    I had to replace the ring and pinion once and finally found the actual manufacturer in seattle, forget the name but they're at the end of 599 where you switch over to get on the draw bridge(1st ave)
     
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  9. edgephoto

    edgephoto Well-Known Member

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    @Mother Deuce I see you are a Mac guy. Command-Shift-4 will allow you to snip screen shots.