Construction and other equipment - ACC-40 Hydraulic Spools

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ACC-40 Hydraulic Spools

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=58745
Printed Date: 25 Jun 2025 at 11:46pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: ACC-40 Hydraulic Spools

Posted By: razorsharp15
Subject: ACC-40 Hydraulic Spools
Date Posted: 22 Oct 2012 at 5:23pm

My ACC-40 will slowly drop the fork blades and tilt forward until everything is touching solid ground (usually talking 1-2 hours from about 3 feet up) and I've been told that it could be the spools or the seals. Since it both tilts forward and the forks settle, I'm thinking the valve body needs rebuilding. Seals are easy to get, spools, not so much. Anyone know if there's a supplier for spools or if another valve body would (hopefully) drop in or be retrofittable.

Replies:

Posted By: D-17_Dave
Date Posted: 22 Oct 2012 at 8:35pm

Still could be and is likely the cylinders packing leaking. On the tilt with 2 cylinders if one leaks it will still pull the oil from one through the other and leak down.

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Yea, I can fix that.....