Koehring Excavators

W Isgett · Oct 24, 2009

Koehring C-166 excavator

Hello...I have a Koehring C-166 that I have owned for about 5 years now and it has always worked well for me. It has sat unused for the better part of a year and now I'm having hydraulic trouble. I have changed the suction filter in the tank, double checked the fluid levels, but the machine still won't move. Only the right track operates, but not the left, or any of the other hydraulics. The machine ran well when I parked it. Does anyone have any idea what the problem could be? Thanks for any help.

Koehringman · Nov 7, 2009

Koehring 466D

Andy, I hope I'm not too late. Koehring 466D 1972 to 1975 Detroit 6V71-N power. Control is air over hydraulic. 32 tons on the scale. 2nd Photo below 475 photo is a 466D. My saying Look at it, Check the hour meter, check the bucket linkages, and the track pads. Especially where the wheels & the pads meet. For wear. Also look for a lot of arc welding work and cracks at the boom foot and boom cylinder mounts.

I've seen a few of these 466D's I wanted one as a toy. I found a real nice one with 5000 hours and little welding. I'm going to restore it. I paid $5000

The one in the photo looks pretty good. Check the machine out RUN it. It should dig strong. And it is fast. Try it at 1/2 throttle. if it looks ,runs, and feels tight. Make the guy an offer.

Koehringman · Nov 12, 2009

Koehring

Buckethead said:
The bottom pic in Timmy's post is a Koehring. I don't know what the top pic is of. Bantam maybe? They were owned by Koehring, too.

It is a model 466D. The top pic is a Bantam C475.:usa:usa

Gary825 · Nov 12, 2009

I ran a couple 166's which were a dream compared to the 466d air over hydralic nightmares . I have no good memories of any of the air controls as a matter of fact .

goldminer · Nov 13, 2009

gary-koehrings can make you talk to god--for sure. had the same problem but found problem to be a simple o-ring bypassing air at main valve. couple of smokes and some hard thought usually fixes a koehring

Gary825 · Nov 13, 2009

the company that owned it at that time said it was like that when it was new and had the Koehring dealer look at it and replace parts many times during its life but they never figured it out unfortunately for us operators . I have not had an air controlled machine since then which was around 1989 thankfully . I would of paid a lot of money on a number of occasions for that O ring back then

Koehringman · Nov 13, 2009

A couple of smokes

Yes, I learned a lot fixin' mine. 99% of the air sytem problems is a leaky hose or an O-ring that wore out. Fortunately parts are easy to get. :notworthy

cat980 · Nov 13, 2009

my uncle use to own a 505 Koehring it had a 5 yeard bucket and the controls were air over hydrioulic. It had a free swing and it would crawl but not turn and after the machine sat for 3 years the brakes were shot so to dig you had to dig on the side of you so you wouldnt roll.

Koehringman · Nov 13, 2009

Roll

Yeah, I had the same problem on my 455 { That is in the picture } turns out that the brake band linkages had corroded & froze up. I took a hammer and a can of WD-40, and, PRESTO! T

he brakes worked again.

Andy1845c · Nov 15, 2009

Hey Koehringman, I didn't get a chance to look at this machine. I kind of decided its too big and I just can't take on any more projects at the moment. I do appreciate the reply though! I don't know that I have ever come across a Koehring hoe in my life, and I post here and get all kinds of info on them... Cool!

Hopfully somebody bought it that has time and money to keep it digging

Koehringman · Nov 16, 2009

I'm sure it would depend on what part of the country were in. I'm in the Mass. area.
I'n the day, 70's every other excavator was a Koehring. I think New Jersey,some parts of California, Michigan, and another state or two I missed, were saturated with them.

goldminer · Nov 21, 2009

parts

anyone know of used parts source for 466 s still using mine

Koehringman · Nov 22, 2009

Parts...

Depends on the part. If it is a hose O-ring or other, that stuff is readily replaceable. My Koehring was made in '66 and Iv'e been able to repack two of it's cylinders. It uses standard packings. The pumps are are either Sundstrand { Drives & Swing } or Tyrone or Vickers. Those pumps are still around but maybe a different manufacurer. Hydraulics shops would be able to help out, Or look them up online.

Shafts or gears are another story. Best bet would be to put up a wanted ad for a 466 or keep an eye on Craigslist for a whole one you could use for parts.

insleyboy · Nov 22, 2009

One of my very first jobs as an operator. (after 9 years as a laborer), was running a 466D on a sewer project. A 12 foot cut right off the bat with all the utilities.Needless to say we had water, gas and telephone companies there quite often as these air machines gave you almost zero feel in the controls for any obstructions. This machine would bounce near the top-end of the boom extension. To make a long story short, these were awesome in the pit, just hogging, sand, clay or what ever. In a tight spot, they made me an old man before I was 30!

Koehringman · Nov 23, 2009

466d

Yeah, Insley. I just bought a 466D It is in pretty sweet shape for its age. It definitley has some spring to it, and faster too, as compared to the 455 I have now. As far as feel is concerned I don't think any excavator has really any. Running a cable machine or something like a Case backhoe where the valve box is below your hands it is a little easier to feel it. Check out Stretch Coppa's "Gallery Of Actual Equipment" page 2 about 3/4 of the way down. He got a photo of the 455.

Doing anything with that H-875 in your title photo?

insleyboy · Nov 23, 2009

I here ya Koehringman. It's not my backhoe in the pic. Someone sent it to me knowing the company I am with used to have several.

Neil87 · Dec 14, 2009

Would anyone from the Toronto/Mississauga area, happen to remember what models of Koehring excavators were used in the Widening of Hurontario back in 1998-2000? The name of the company was "Pit-On" and I recall someone posting an image of this companies koehring excavators? I'm thinking one was a 1066 and the other a 1266. Those Koehrings made a hell of a racket, I' am thinking of constructing a model of one of these machines. Thanks,

Neil

Andy1845c · Nov 3, 2010

Had to drag this up tonight after browsing craigslist.

http://minneapolis.craigslist.org/hnp/grd/1975536840.html

466E for 10,500

Looks decent in the pics too!

Wish I could afford it....

Did the "E" still use the air/hydraulic controls?

Mostly just thought maybe the Koehring fan here would get a kick out of it. :usa

-Andy

Buckethead · Nov 3, 2010

Andy1845c said:
Had to drag this up tonight after browsing craigslist.

http://minneapolis.craigslist.org/hnp/grd/1975536840.html

466E for 10,500

Looks decent in the pics too!

Wish I could afford it....

Did the "E" still use the air/hydraulic controls?

Mostly just thought maybe the Koehring fan here would get a kick out of it. :usa

-Andy

The machine in those pics has the later control configuration. I ran a Koehring like that briefly, nice machine. I think the E model was the first one with the "modern" levers.

245dlc · Nov 3, 2010

A company I worked for in Edmonton use to have 866E's I never ran one myself but I do remember the guys saying that they were air over hydraulic and that they had toggles because he controls were different than the equivalent Cat machines.

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