Farm Equipment - D17 WATER IN TRANSMISSION

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D17 WATER IN TRANSMISSION

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=161335
Printed Date: 23 Sep 2025 at 5:01pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: D17 WATER IN TRANSMISSION

Posted By: jeickman01
Subject: D17 WATER IN TRANSMISSION
Date Posted: 26 May 2019 at 7:34am

D17 Series 3 is getting rainwater in the transmission. Thought I had this fixed when I replaced the shift lever boot. Fills to the point that it leaks out past the rock shaft seals. All my manuals are in storage so I need help. What are all the places water could get in? Boot, breather, shift cover gasket, rock shaft seals?

Replies:

Posted By: DSeries4
Date Posted: 26 May 2019 at 9:21am

Breather and the gear shift boot are the only places where water could possibly get in. Are you sure it's water? Very common to have hydraulic oil migrate into the transmission through the input shaft seals.

Best way to keep water out is to park her under a roof.

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'49 G, '54 WD45, '55 CA, '56 WD45D, '57 WD45, '58 D14, '59 D14, '60 D14, '63 D15D, '66 D15II, '66 D21II, '67 D17IV, '67 D17IVD, '67 190XTD, '73 620, '76 185, '77 175, '84 8030, '85 6080

Posted By: jeickman01
Date Posted: 26 May 2019 at 3:38pm

I was hoping you would reply. It's water, oil is milky white. But since I posted I remembered that when I bought the tractor I noticed that someone had R&Rd the rockshaft housing and that here was ugly silicone smeared around the joint. May have answered my own question.