646-75lbh Restoration

Discussions on restoring tractors.
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Timj United States of America
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Re: 646-75lbh Restoration

Post by Timj »

That's called "can do attitude"! :thumbsup: took a little time, but the project moved forward. :worship:
:446cart: let's go, it's finally time to blow. :peace:
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Spike188 Canada
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Re: 646-75lbh Restoration

Post by Spike188 »

The reassembly of the CCKA has started and will take longer than planned. The block was bored but there are a lot of small details to address.
CCKA port surfaces.jpg
To start with then exhaust and intake ports show signs of casket failure.
CCKA port filing  2.jpg
The filing begins
CCKA port filing 1.jpg
Taking a little off on both sets of ports.
CCKA port filing.jpg
This is being addressed by filing the manifold mating surfaces flat. Getting all of the pits out took some time.
CCKA honing ports.jpg
When the mating surfaces were completed the ports themselves were honed clean and smooth.

Now its off to a service call while the main bearings began chilling in the freezer next to the ice cream.
Which of those will get attention first?
Spike Colt - 9 & 10, Case - 108, 118, 444, 446, 448, 646, 646bh, Ingersoll 4016, 4118AH
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Eugen Canada
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Re: 646-75lbh Restoration

Post by Eugen »

I like the idea of honing the ports. I will steal it and hone my k321 ports too :violin: :cheers:
Case 224, 444, 644, 680E
Kubota B26 :blush:
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Eugen Canada
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Re: 646-75lbh Restoration

Post by Eugen »

Quick question. Are you going to ream the new valve guides after they're in? The manuals says you might have to, but it's unclear to me how you can ream the new guides so accurately. :geek:
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 »

I am sending the block to Michael for valve fitting. The seats are a 45 deg angle no more than 3/16" wide. The valves are at 44 deg angle and not lapped. It do not have the tools to do either. There is a box of parts still in transit from Booner that has the job stalled.

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 Spike188 »

The 4118AH had been sitting on the slab taking up space and creating mental dilemmas. The deck is totally bent and needs spindle bearings before it will even turn. The only reason the tractor was purchased was it was priced right, but now has became a project that needs to be shelved to finish other CCI commitments.
tractors moved to the pad.jpg
Yesterday was the Canada May 24 weekend. With everything closed I did what any bored mechanic would do, clean shop and stage the next project.
A day later being inspired by all of the cleaning, all of the hoe arms, 3 point mount and down rigger parts were taken to the sandblaster for prep and primer. Midafternoon today, the urge to surge on hit.
loader pin jam.jpg
The intent is to use the 646L which is minus motor, travel control valve, loader control valve and other stuff as a donor frame for rebuilding the 646B . The 646L was partial restored with an incorrect red and yellow when a previous owner passed.
brass drift loader pin remove.jpg
This made parts removal much easier but the loader hinge pin was seized in place on the left side loader arm. Driving the hinge pin using brass drive only spread the loader arms. Using a load strap to pull the arms together and lubricating the pin at the hinge was enough to get movement.
hood rod wear.jpg
Wear groves in the rod indicate that it had not been replaced by the PO.
bent steering wheel.jpg
The steering wheel shaft came out easily but the after market wheel is welded on and the shaft was bent. Further inspection indicated that the steering sector is extremely worn. At least there are 2 good wheels on recently purchased 224's and the 646B has a good sector that only needs bushings.
646L banana plate pin weld close.jpg
The banana plate had pins welded in and the travel control ball joints are shot. Rebuilding the banana plate and travel control linkage will probably happen with the frame on stands bottom side up.
646L rear axle water.jpg
Removing the rear axle from the donor frame did not bring any surprises. It was full of water as expected but appears to be very tight with low wear.
646L frame ready for transfer.jpg
With the 646L frame stripped it is ready to become a 646B
646B axle cover.jpg
Exposing the 646B transaxle top showed the typical grim build up and housing water entry point.
646B axle wear top.jpg
Ouch, Not good, extreme axle wear was not on the agenda, but not a surprise considering all of the other issues found.
646B axle wear bottom.jpg
Placing a jack under the axle housing let the axle drop about 3/8" The axles may have to be welded and turned for new bushings. Hopefully the housing is not damaged.
646B transfer build.jpg
The 646L was built a year before the 646B was introduced. Backhoe mounting brackets and weight bar hangers need to be added to the 646L frame. 4 holes will be drilled on the under side of the frame to mount the brackets.
At the end of the afternoon
646 build end of day May 25.jpg
Restoration is starting to look manageable both skill and time wise but cost is still unknown. The backhoe rear axle housing failure was unexpected.

Digging the hole a little deeper,

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

Post by Eugen »

Oh wow, look at all those parts spread out on the driveway! Someone's having fun!

I never thought the axles could get that much wear. :O I supposed a lot of weight and usage will do that?! I'm even afraid to check mine now, as I don't have any other 6xx for parts.
Case 224, 444, 644, 680E
Kubota B26 :blush:
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MattA United States of America
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Re: 646-75lbh Restoration

Post by MattA »

The newer tractors had a much beefier rear end. Not sure when Ingersoll started putting the loader/backhoe rear end in the 3000 and 4000 series. My 2001ish 4016 has it. I can't seem to figure out how to upload pictures to show you my tractors rear end :headbash:
Ingersoll 4016
Dave180 Canada
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Re: 646-75lbh Restoration

Post by Dave180 »

Amazing how much use these 600 series had over the years and little or no maintenance
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Re: 646-75lbh Restoration

Post by Eugen »

MattA wrote: Wed May 26, 2021 12:08 pm The newer tractors had a much beefier rear end. Not sure when Ingersoll started putting the loader/backhoe rear end in the 3000 and 4000 series. My 2001ish 4016 has it. I can't seem to figure out how to upload pictures to show you my tractors rear end :headbash:
Just click on attachments tab and then add files

Then wait for the pics to upload. They will appear below the submit button and you can also use the "in line"
CE040B2A-A8A1-45DA-8E4D-32B5A15CB32A.png
69E8DFE7-C9A0-4BED-8F1D-25E8EE422672.png
Case 224, 444, 644, 680E
Kubota B26 :blush:
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