D7E - 48A hydraulic flanges

Code 61 is 3,000psi
Code 62 is 6,000 psi
Check note at bottom of chart.

Thanks OM. I guess what I was really asking is..... Does a 48A use the CAT flanges as far back as '66(48A7053)?

Thanks, Zane

Yes, they used a combination of one piece and split flanges back to 48A1.
What is the s/n of your system? Should be a tag for the 173/173B on the hydraulic control tank.

34H826.... and it's 48A7052(fat fingered the serial)

Also been doing some reading on replacing the hose and keeping the original ends. Didn't know that could be done until I started looking into it. But, 1 of the main lines has been replaced and doesn't have the original connectors. Looks like maybe the last owner ran into this same issue with the flange sizing based on the rig shown in the pic.

Thanks, Zane

[attachment=34937]IMG_9443.jpg[/attachment]

I don't believe those fittings were intended for reuse.

Those hoses in the parts book page and in the photos are built up with reusable stems and sleeves, a Cat dealer will cut the hose, push the stems out of the sleeves, fit new hose and push the sleeves back on.

Is that still current practice. I have my own hydraulic swedging equipment and everything is one time use.

Here in Australia all Cat parts stores are able to fit new hose to the re use fittings, it is cheaper than the non re use fittings. I think only one of the fittings in the photo's is non re use, the rest you should be able to get your Cat parts store to fit new hose up onto the old fittings.

Cat were using replaceable ends before the 48A D7 was built and still using them when I retired nearly 50 years later, I can't see them changing a major selling feature like that.