Rear hydraulics
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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=190779
Printed Date: 26 Dec 2025 at 2:17pm
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Topic: Rear hydraulics
Posted By: jrbynf
Subject: Rear hydraulics
Date Posted: 19 Sep 2022 at 1:53pm
| When using a post hole auger would it be possible to change the hoses on one of the rear cylinders to provide down pressure? |
Replies:
Posted By: Allis dave
Date Posted: 19 Sep 2022 at 2:02pm
| If you're talking about and of the older models with 1 way hydraulics, the answer is no. A WD45 cylinder only extends. It only retracts by gravity. Same with the newer ones, but I'm not as familiar. Some cockshutts or Coop's are the only tractors I"ve heard of that can actually put down pressure on a 3-point. |
Posted By: MACK
Date Posted: 19 Sep 2022 at 8:21pm
| Don't know what tractor you have, but sounds like your auger bit needs sharpened. MACK |
Posted By: jrbynf
Date Posted: 19 Sep 2022 at 8:33pm
| Lots of rocky soil. It’s a 180 |
Posted By: DSeries4
Date Posted: 19 Sep 2022 at 8:34pm
|
Mack is right. A post hole auger should not need down pressure to operate. The spiral on the auger should pull it into the ground. ------------- '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: rw
Date Posted: 19 Sep 2022 at 8:52pm
|
This is not an answer to the question you asked but an alternative. Hard dry soil with rocks are tough for most three point hitch outfits. Hard dry rocky soil will dull your bit pretty quick. https://www.youtube.com/watch?v=-2XRRoSth_8" rel="nofollow - https://www.youtube.com/watch?v=-2XRRoSth_8
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Posted By: Les Kerf
Date Posted: 19 Sep 2022 at 8:56pm
Yup. Augers work great in soft soil. Just talk to the folks who drill the holes around here for utility poles, they use down pressure and lots of it too. |
jrbynf wrote:Posted By: jrbynf
Date Posted: 19 Sep 2022 at 9:04pm
| I know it’s not ideal but the blades dull pretty quick here. They make hydraulic assisted augers but I was just trying to use what I had |
Posted By: Allis dave
Date Posted: 20 Sep 2022 at 7:02am
| When we're using a post hole auger in hard ground, it's a 3 person job. One on the tractor and one on each side of the auger pushing down. |
Posted By: jrbynf
Date Posted: 20 Sep 2022 at 8:29am
| So if the hoses are reversed will the hydraulic cylinder work in reverse? Or are the internals of the rams such that they don’t allow for opposite flow |
Posted By: Joe(TX)
Date Posted: 20 Sep 2022 at 12:10pm
|
Danuser makes a down pressure device for their augers. Could be done on most augers. ------------- 1970 190XT, 1973 200, 1962 D-19 Diesel, 1979 7010, 1957 WD45, 1950 WD, 1961 D17, Speed Patrol, D14, All crop 66 big bin, 180 diesel, 1970 170 diesel, FP80 forklift. Gleaner A |
Posted By: Allis dave
Date Posted: 20 Sep 2022 at 12:15pm
| There is one 1 place to connect the hose so you can't reverse the flow. |
Posted By: jrbynf
Date Posted: 20 Sep 2022 at 12:21pm
| Yes there is only 1 fitting. Would require some interesting plumbing to make it work. |
Posted By: Allis dave
Date Posted: 20 Sep 2022 at 2:11pm
|
Internally, 1 way and 2-way cylinders are different. A 2 way cylinder has a ram smaller than the cylinder barrel and larger head piece bolted to end of the ram with a seal around it. A hydraulic hose is plumed to each end of the cylinder. To extend - oil is pumped behind the ram to push it out. Oil fills the barrel To retract - oil is pumped into the other end of the barrel It pushes back on the ram head, forces the oil out form the behind the ram, and the cylinder is retracted. 1-way cylinder are missing the second fitting and design to pump in oil to retract the cylinder. there's no good or safe way to change a 1-way cylinder into a 2 way
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Posted By: jrbynf
Date Posted: 20 Sep 2022 at 4:33pm
| Thanks for all the replies. Makes sense. |