Farm Equipment - AC 170 175 PTO gear cover?

Print Page | Close Window

AC 170 175 PTO gear cover?

Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=210588
Printed Date: 01 Apr 2026 at 1:20pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: AC 170 175 PTO gear cover?

Posted By: Tracy Martin TN
Subject: AC 170 175 PTO gear cover?
Date Posted: 31 Mar 2026 at 10:01pm

What was the reason for the change of PTO gear cover change? The tube to cover just ahead of it? Just wondering? Tracy

-------------
No greater gift than healthy grandkids!

Replies:

Posted By: DrAllis
Date Posted: 31 Mar 2026 at 11:13pm

Sometime after the change to the front hydraulic pump, the internal lube pump for the power director clutch was eliminated and the power steering return oil was used instead to lubricate it. This required a way to keep oil levels between the two compartments level, so this tube was added.

Posted By: Tracy Martin TN
Date Posted: 01 Apr 2026 at 9:44am

Dr Allis, thanks for the info. Learn something new every day! Tracy

-------------
No greater gift than healthy grandkids!

Posted By: DrAllis
Date Posted: 01 Apr 2026 at 9:48am

It was a good design change. It was cheaper to build (elimination of one pump) and function wise just as good.

Posted By: Kevin in WA
Date Posted: 01 Apr 2026 at 10:14am

Eliminating power director lube pump might have made sense but putting the main pump up front was a huge step backward in my opinion, cost savings could not have been that much