D19 Hydraulics
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=140456
Printed Date: 01 Oct 2025 at 4:48pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: D19 Hydraulics
Posted By: HillBilly
Subject: D19 Hydraulics
Date Posted: 15 Jul 2017 at 11:34pm
I have a 62 Allis-chalmers D19 with hydraulic troubles. The snap-coupler lift arms will lift, but will not hold pressure. If you engage the draft control bypassing the lift handle will the arms come up like on the D15, and early D17's? How does the height control cable work as well? When the arms get to the max position do they trip the cable, which trips a valve on hydraulic pump, and dumps everything back in the tank? I'm sorry I got so many questions I need to be put in the right direction. ------------- Hillbillys lovin in the hay!! |
Replies:
Posted By: MACK
Date Posted: 16 Jul 2017 at 7:13am
| If lift arms do not hold, there is a two way check valve between the two sections of the lift valve that is not holding. MACK |
Posted By: HillBilly
Date Posted: 16 Jul 2017 at 9:36pm
|
Thanks Mack. I'm going to order a service and parts manual tomorrow. Mack I know when you pressurize the traction booster the lift arms normally lift like they do on my D15, but they do not when I pressurize the booster on the D19. Could that two way valve be screwing with the booster also, or is the booster shot? When I move the traction booster up about halfway on the quadrant I can hear the pump change its tone, but nothing happens on the lift arms. ------------- Hillbillys lovin in the hay!! |
Posted By: MACK
Date Posted: 16 Jul 2017 at 11:04pm
| Sounds more like linkage adjustment. Adjust bent linkage under pump until you feel spring pressure on lever the last two notches from top. MACK |
Posted By: HillBilly
Date Posted: 17 Jul 2017 at 5:31pm
|
Mack when I engage the traction booster shouldn't the lift arms lift up? ------------- Hillbillys lovin in the hay!! |
Posted By: MACK
Date Posted: 17 Jul 2017 at 10:07pm
| Should lift some but much. MACK |