Construction and other equipment - 1978 545B hydraulic pressure?

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1978 545B hydraulic pressure?

Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Construction and other equipment
Forum Description: everything else with orange (or yellow) paint
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=176524
Printed Date: 22 Aug 2025 at 2:11pm
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Topic: 1978 545B hydraulic pressure?

Posted By: SteveM C/IL
Subject: 1978 545B hydraulic pressure?
Date Posted: 06 Dec 2020 at 12:55pm

Popped a hose on bucket roll where it articulates. How many PSI hose do I need to get replacement made? Gonna do all four because they are original,cracked rubber,exposed braid. LOL! This was a "someday" project that turned into "current" project.

Replies:

Posted By: DiyDave
Date Posted: 06 Dec 2020 at 5:49pm

Should be 1825 PSI, unless someone has messed with the relief valve.

Google is your friend (except for that free speech thing...)

https://www.tractorparts.com/PDFs/ACFIAT545BWHLLDRINFO.pdf" rel="nofollow - https://www.tractorparts.com/PDFs/ACFIAT545BWHLLDRINFO.pdf

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Posted By: DMiller
Date Posted: 06 Dec 2020 at 6:14pm

My 7G had similar pressure, High volume. I used double wire braid lines actually rated over 10,000, but shock loads will be considerably HIGHER than operating pressure.

Posted By: SteveM C/IL
Date Posted: 06 Dec 2020 at 11:20pm

Thanks Dave. Reckon 4000psi hose would do?