Farm Equipment - PD Shift Delay

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PD Shift Delay

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=17644
Printed Date: 06 Feb 2025 at 4:26am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: PD Shift Delay

Posted By: Charlie175
Subject: PD Shift Delay
Date Posted: 03 Sep 2010 at 6:52am

Not that I have a tractor with one, but it seems that from the videos I've seen that many Large Allis tractors exhibit a delay when shifting the PD, what is the cause of this?

Dad's D-15 shifts pretty smooth I think, but the issue I have seen is mainly on 7000 series.

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Charlie

'48 B, '51 CA, '56 WD45 '61 D17, '63 D12, '65 D10 , '68 One-Ninety XTD

Replies:

Posted By: Adam Stratton
Date Posted: 03 Sep 2010 at 7:05am

From what I understand, the main delay is in fact that the PD is activated by hydraulics on the 70's, and they dont always move as fast as your right arm. Ive got a 7060 and a 7045, and they shift differently between to two of them, so I know what you are talking about, but Im not smart enough (or particular enough) to worry about it.