1. Thank you for visiting HeavyEquipmentForums.com! Our objective is to provide industry professionals a place to gather to exchange questions, answers and ideas. We welcome you to register using the "Register" icon at the top of the page. We'd appreciate any help you can offer in spreading the word of our new site. The more members that join, the bigger resource for all to enjoy. Thank you!

Davis/Case 40 + 4 Std Trencher

Discussion in 'Other Compact Equipment' started by Metalman 55, Jul 9, 2015.

  1. Metalman 55

    Metalman 55 Senior Member

    Joined:
    Feb 7, 2013
    Messages:
    1,007
    Location:
    Ontario
    We just picked this trencher up for free from a company where the corporate top brass said "clear out all the junk" & we thought it was better than junk, so we loaded it on our boom truck & brought it back to the yard. We have no experience with the Davis/Case trenchers, but thought it is worth trying to check out everything on it & try to get it going. Any idea how old it is? The Ser # is 1140513. It looks to be in decent shape & we will not waste any time in finding out!

    Does anyone out there have one in working condition that can comment on this model?



    20150709_140215.jpg 20150709_140341.jpg 20150709_140750.jpg 20150709_140810.jpg 20150709_141645.jpg
     
  2. Metalman 55

    Metalman 55 Senior Member

    Joined:
    Feb 7, 2013
    Messages:
    1,007
    Location:
    Ontario
    Well, we worked on it for an hour today & Tony got it going! Not bad for a free machine!

    Anyone know how we can adjust the chain out to tighten a bit?

    https://youtu.be/5PqNAuGRRC4
     
  3. 74inchShovel

    74inchShovel Well-Known Member

    Joined:
    Jan 19, 2008
    Messages:
    150
    Location:
    Washington
    Should be a zerk near end of boom that tensions chain. Nice score!
     
  4. Metalman 55

    Metalman 55 Senior Member

    Joined:
    Feb 7, 2013
    Messages:
    1,007
    Location:
    Ontario
    I had a look & did not see one. Is the grease fitting on the part near the tip that moves in/out, or on the fixed part?
     
  5. 74inchShovel

    74inchShovel Well-Known Member

    Joined:
    Jan 19, 2008
    Messages:
    150
    Location:
    Washington
    It's on the end, on the part that moves in and out. Should be next to the roller, on the side at very end. It goes to a cylinder, much like tensioning mini ex tracks. And like that set up, they can blow seals and not hold tension. Going off memory here, it's been 25 years since I dealt with these. 25+4, 30+4, DH4, DH5 etc.
     
  6. Metalman 55

    Metalman 55 Senior Member

    Joined:
    Feb 7, 2013
    Messages:
    1,007
    Location:
    Ontario
    20160721_120217.jpg 20160721_120234.jpg

    Well, we tried it out for the first time actually this morning, as we have a trench to do for a new electric service to a building here on the property. It has been about 10 months since it ran & took a bit of coxing to get it going, but once running it worked ok. So far so good.:)
     
  7. jcmarleau

    jcmarleau Member

    Joined:
    Oct 26, 2008
    Messages:
    11
    Location:
    L'Orignal, Ontario Canada
    I do have a Operator manual for sale for the 40+4 trencher if interested. jc
     
  8. Metalman 55

    Metalman 55 Senior Member

    Joined:
    Feb 7, 2013
    Messages:
    1,007
    Location:
    Ontario
    It may be a little hard to tell from the picutures on this post but the old trencher we inherited has a narrow cut, only about 4.5" wide. I am interested in making the cut a bit wider & I wanted to ask if it is feasible to weld tips on the existingt teeth every so often to give a wider trench. I would like to get a little over 6" in width for an upcoming job. Can I tip them to give the extra & if so, about how many teeth would I have to do? Maybe every 6th tooth each side?
     
  9. 74inchShovel

    74inchShovel Well-Known Member

    Joined:
    Jan 19, 2008
    Messages:
    150
    Location:
    Washington
    There's a company called Ballantine that deals with a lot of aftermarket trencher parts. The "correct" way is to have a spacer in between chain and tooth. They most likely would have these. Downside besides cost is you would most likely need longer bolts, I think every sixth tooth would be fine.
     
  10. Metalman 55

    Metalman 55 Senior Member

    Joined:
    Feb 7, 2013
    Messages:
    1,007
    Location:
    Ontario
    I wonder if pipe spacers would work ok, along with longer bolts?
     
  11. 74inchShovel

    74inchShovel Well-Known Member

    Joined:
    Jan 19, 2008
    Messages:
    150
    Location:
    Washington
    Those outside cutters will take a lot of stress- maybe get some 1" bar stock and just fab your own. I would not use pipe. It's important that bolt goes through one side of chain, into spacer bushing, through other side of chain then into 1" spacer you fabbed, as opposed to just bolting to one side of chain. Some people put both outside cutters on one station, to minimize side load on chain.