646-75lbh Restoration

Discussions on restoring tractors.
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Eugen Canada
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Re: 646-75lbh Restoration

Post by Eugen »

They'd look awesome on a 2xx too, like the 226 I used to have.

Glad you found them!
Case 224, 444, 644, 680E
Kubota B26 :blush:
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Spike188 Canada
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Re: 646-75lbh Restoration

Post by Spike188 »

Ran into a snag while painting. The paint is PPG Omni left over from doing the 646L three years ago. There wasn't going to be enough base coat to do this job but why worry?
first paint rs.jpg
First paint 1rs.jpg
Because the Omni line of TMX has been discontinued in Canada. A replacement formulation has not been introduced at this point. It sounds like the hardener and reducer is still available so my supplier is doing a colour match that is suppose to be ready this week.

:headbash: Uhhgg. :((

Spike
Spike Colt - 9 & 10, Case - 108, 118, 444, 446, 448, 646, 646bh, Ingersoll 4016, 4118AH
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Re: 646-75lbh Restoration

Post by Dave180 »

Looks good what you have done, hopefully you get paint to match what you have done
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Re: 646-75lbh Restoration

Post by Eugen »

They're really good these days at colour matching. It's unfortunate though that you ran out of the original. On the other hand just like most of us are technically deaf beyond 16kHz, we're pretty much colour blind too. I think you'll be fine at the end of the day. Let's see how it all works out. I know it will one way or another.
Case 224, 444, 644, 680E
Kubota B26 :blush:
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Re: 646-75lbh Restoration

Post by Spike188 »

Does anyone have a lead on where to find the decal sets for the Davis D100 hoe? H102749, Lever control identification, 321-3054 Seat warning label, and 321-3196 D100 Decal.
Spike Colt - 9 & 10, Case - 108, 118, 444, 446, 448, 646, 646bh, Ingersoll 4016, 4118AH
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Harry United States of America
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Re: 646-75lbh Restoration

Post by Harry »

I did purchase the decal a few years ago. I think I ordered it from Barneveld.

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Harry
1973 444, 1974 644, 1976 446, 1977 646, 1986 226
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Re: 646-75lbh Restoration

Post by Spike188 »

Slowly getting the hoe back together. All new hoses, new piping in boom, new o-rings and seals in valves and cylinders, a couple of new wrist pins.
hoses.jpg
Hope to power it up this afternoon.
Spike Colt - 9 & 10, Case - 108, 118, 444, 446, 448, 646, 646bh, Ingersoll 4016, 4118AH
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Re: 646-75lbh Restoration

Post by Eugen »

Well, I disagree with you Eugene! I am amazed how quickly you find the right parts, paint, hydraulic hoses, o-rings, sources for sand blasting and so on. What's slow to you is mighty fast for me at least! :smash: :smash: Well done, looking forward to seeing it alive! :spin:
Case 224, 444, 644, 680E
Kubota B26 :blush:
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Re: 646-75lbh Restoration

Post by Spike188 »

swing cylinder setup.jpg
Putting the swing cylinders and gear on was a tight fit. The swing cylinders had to be clamped in place and rotated to be parallel to the gear face. It was unexpected to find that the swing rack and pinion were in excellent condition
Pinning.jpg
Pinning booms in place revealed that the lower boom pivot pin was not the correct pin. The od was too small and pin length was an inch short. 2 pins will need to be made, it and the long one for the travel locking bar which is missing the extra length need to attach the bar.
hosing.jpg
With the boom and dipper in place the hose and cylinder layout could be began. The parts manual for the plumbing layout is vague. There are 4 drawings in 2 Davis-Case parts books that when compared made it possible to unravel.
hose times two.jpg
Two hoses have to fit through the down rigger posts.
hose tight fit.jpg
There is very little room to get a wrench in the tube. This is the first encounter where hose instillation sequence had to be planed.
boom top.jpg
The top boom hose connections and
boom piping.jpg
the lower boom connections were completed by prying the steel lines up with a large screwdriver and working across.
control tower.jpg
Attaching the hoses and tubing to the correct valves was a challenge. Once again working from right to left after test fitting all of the lines then removing them in a sequence that made tightening possible.
bleeding and testing.jpg
Using the 646 Loader as the hydraulic supply testing began. One down rigger need lines reversed, 2 of the 4 steel lines in the boom were crossed in the boom causing a hydraulic lock, and lastly the travel direction on the dipper arm was reversed. 15 gallon of fluid later the control issues were cleaned up but there was a mess of oil on the pad. Next project is digging the travel and loader control valves out of the old carcase for total rebuilds.
Spike Colt - 9 & 10, Case - 108, 118, 444, 446, 448, 646, 646bh, Ingersoll 4016, 4118AH
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Re: 646-75lbh Restoration

Post by Timj »

Coming together nicely, Spike :thumbsup:
I think the tight spaces and fun hooking up the hydraulics is an inherited trait of all backhoes. :pullhair:
:geek: Tim
:creeper: deck's on, blades sharp, let's go it's time to mow :48: :446cart:
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