Search found 7 matches

by Hank420
Mon Aug 25, 2025 2:57 pm
Forum: Show & Tell
Topic: Crawler backdozer/bullhoe?
Replies: 4
Views: 81271

Re: Crawler backdozer/bullhoe?

Thanks for the heads up on that. I don’t plan to be doing a lot of digging with it. It’s more of a toy… Guess I still have a bit of that seven-year-old kid in me that likes to play in the sandbox once in a while. :) Although it did come in real handy earlier this summer, removing an old playground s...
by Hank420
Thu Aug 14, 2025 7:09 am
Forum: Show & Tell
Topic: Crawler backdozer/bullhoe?
Replies: 4
Views: 81271

Re: Crawler backdozer/bullhoe?

I’m not sure what the hoe attachment came off of, it had been sitting behind my buddy’s uncle’s barn for decades. It was very rusty and everything was seized, we had to replace all the cylinders and get a new part machined for the turret. We were able to increase the pressure of the existing pump an...
by Hank420
Mon Aug 11, 2025 6:56 pm
Forum: Show & Tell
Topic: Crawler backdozer/bullhoe?
Replies: 4
Views: 81271

Crawler backdozer/bullhoe?

https://ibb.co/wZvfHBLG
https://ibb.co/zTZfhKLD
https://ibb.co/pjDwPyFV
https://ibb.co/8LLfBd7F

This was a 3 year project adding a backhoe attachment to my crawler. I think it turned out pretty good. Are there any other crawlers out there with this attachment?

Hank
by Hank420
Mon Aug 11, 2025 6:34 pm
Forum: Early model JD crawler technical support
Topic: JD 420c Crawler Hydraulic System
Replies: 10
Views: 33187

Re: JD 420c Crawler Hydraulic System

https://ibb.co/wZvfHBLG https://ibb.co/zTZfhKLD https://ibb.co/G4P4D2vv https://ibb.co/pjDwPyFV https://ibb.co/8LLfBd7F It has been a while since I last posted something on here. I did get my project completed and I think it turned out pretty well. We were able to make some adjustments to the pressu...
by Hank420
Fri Sep 15, 2023 7:03 pm
Forum: Early model JD crawler technical support
Topic: JD 420c Crawler Hydraulic System
Replies: 10
Views: 33187

Re: JD 420c Crawler Hydraulic System

Thanks again guys for your advice. I probably should have consulted with you folks before I started this project, however, since I’ve come this far with it, I hope to tinker with it a bit more before I give up. I’ll try posting some photos and/or video when it’s done if anyone would be interested. H...
by Hank420
Tue Sep 05, 2023 8:16 pm
Forum: Early model JD crawler technical support
Topic: JD 420c Crawler Hydraulic System
Replies: 10
Views: 33187

Re: JD 420c Crawler Hydraulic System

Thanks for your response Jim and Lavoy. The Crawler does have a blade. I would add a picture of my “Backdozer” (- or “Bullhoe”) if I knew how to. - The hydraulic pump is located just behind the rad at the front of dozer. The pressure is about 1,000 psi which is not enough to effectively use the back...
by Hank420
Mon Sep 04, 2023 4:56 pm
Forum: Early model JD crawler technical support
Topic: JD 420c Crawler Hydraulic System
Replies: 10
Views: 33187

JD 420c Crawler Hydraulic System

Hello, I am new to this forum, but I’m hopeful that someone here has some expertise that they are willing to share with me. I have a 1956 420c Crawler with a backhoe attachment. However, the hydraulic pressure is not enough to make the backhoe a very useful tool. Can the pressure be increased and is...