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Ford 750 backhoe

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=208859
Printed Date: 15 Nov 2025 at 8:05pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: Ford 750 backhoe

Posted By: Acguywill
Subject: Ford 750 backhoe
Date Posted: 09 Nov 2025 at 8:04pm

We have an old Ford backhoe with a 3 speed Clark powershift transmission that is having issues. When shifting into forwards it takes a few seconds to engage no matter which gear is selected. Put it into reverse and it works fine. Shift from reverse immediately to forwards it works normally but if I shift from reverse and hit the brakes and then into forward it takes a few seconds to engage again. I disconnected the dump control valve that disengages the transmission when hitting the brakes but that has made no difference. Oil level is good and it doesn't seem as if the transmission is slipping any as it pushes good. Any ideas?

Replies:

Posted By: DMiller
Date Posted: 10 Nov 2025 at 6:28am

Seals internally are hardening and failing.

Posted By: Acguywill
Date Posted: 10 Nov 2025 at 8:47pm

What's more likely, the forward clutch seals or the shuttle valve? I used it tonight to feed the cows and calves and it seems to be somewhat random. More like something sticking or blocked. I will have to do some research on this thing.