Farm Equipment - maroon 7040 PD troubles

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maroon 7040 PD troubles

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=129060
Printed Date: 01 Sep 2025 at 8:15am
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Topic: maroon 7040 PD troubles

Posted By: cowkicker
Subject: maroon 7040 PD troubles
Date Posted: 21 Sep 2016 at 5:48pm

Got a 7040 PD that stopped moving today. Operator said he didn't remember if he was shifting or just getting ready to shift the transmission, said it all just happened too fast. Anyway, symptoms are: steering works, brakes work, 3 pt arms work. The transmission lever seems to be floppy, like it is out of shifting fork, but not enough to be in neutral, hi-lo buttons in the floor do not change the sound of motor when shifting between the two, hi-lo range shift lever moves between ranges with no resistance, and the trans lube 1800 rpm light is on! Any idea?

Replies:

Posted By: DrAllis
Date Posted: 21 Sep 2016 at 6:39pm

If the high button stays down by itself when you depress it, I'd say the splines are gone on the low range clutch housing. If the high button won't stay down when you depress it, I'd say the gerotor pump ate its pigs.