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: 04 Apr 2026 at 6:03am
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
|
Posted By: tbran
Date Posted: 01 Apr 2026 at 4:50pm
The highly machined bevel gear with machined splines was expensive - then throw in the bearings and assembly time and it saved over $200 / tractor. PLUS going to hydrostatic steering vs the mechanical assist and elimination of those gears and assembly time resulted in about a $500 reduction in cost. approx $500 x 2500 units = about a mil and a quarter saved. Anyone who shaved a hundred bucks off a tractor was a hero !
-------------
When told "it's not the money,it's the principle", remember, it's always the money..
|
|