PSI Rating on Hydraulic Hose for H3
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Construction and other equipment
Forum Description: everything else with orange (or yellow) paint
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=158726
Printed Date: 20 May 2025 at 11:30am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: PSI Rating on Hydraulic Hose for H3
Posted By: AJ
Subject: PSI Rating on Hydraulic Hose for H3
Date Posted: 04 Mar 2019 at 8:42am
|
What PSI rating hydraulic hose should you run on an H3? Can't find the info anywhere on it. ------------- Can't fix stupid |
Replies:
Posted By: NomoreJohnDeere
Date Posted: 04 Mar 2019 at 9:38am
|
regular old hydraulic hose gets my vote ------------- HD3 |
Posted By: AJ
Date Posted: 04 Mar 2019 at 10:13am
But there are different PSI ratings. Hydraulic hoses are not cheap and if I'm gonna spend the money and go through the effort I want it to be right to avoid problems/blow outs as I've had a couple hoses blow in my face before on other equipment.
------------- Can't fix stupid |
NomoreJohnDeere wrote:Posted By: NomoreJohnDeere
Date Posted: 04 Mar 2019 at 10:32am
|
get a high rated one ------------- HD3 |
Posted By: Acdiesel
Date Posted: 04 Mar 2019 at 10:56am
|
if your using it for a loader/blade cylinder 3000 to 4000 psi hose. is fine. anything on the a drive pump to a motor 5000 psi hose. dan ------------- D19 Diesel,D17 Diesel SER.3 2-D14, 2-D15 SER.II WF/NF D15 SER.2 DIESEL D12 SER.I, D10 Ser.II 2-720'S D21 Ser. II Gmc,caterpillar I'm a pharmacist (farm assist) with a PHD (post hole digger) |
Posted By: AJ
Date Posted: 04 Mar 2019 at 11:21am
|
I have the pump on the side of the torque tube. Hose to that should be 5000psi? ------------- Can't fix stupid |
Posted By: steve(ill)
Date Posted: 04 Mar 2019 at 1:09pm
|
In the 1970s we use to use a LOT of 3000 psi hoses on the dozers coming out of the Allis Plant.. That is the RATED pressure, so its good for all day long. The BURST pressure is probably double that.
I think most of the tractors at that time were running 2100- 2500 psi operating pressure. ------------- Like them all, but love the "B"s. |
Posted By: AJ
Date Posted: 04 Mar 2019 at 4:44pm
|
Good to know thanks for the info ------------- Can't fix stupid |
Posted By: Jim.ME
Date Posted: 04 Mar 2019 at 5:35pm
|
H3 is a gear pump isn't it? If so it is likely pressure is in the 2000-2200 psi range. A 2 wire braid SAE 100R2 hose would be typical for that application range. The place you are going to get your hoses from should be able to supply that info for their hose and fittings, working psi is marked on a lot of hoses. Like pipe, the bigger the diameter the lower the working pressure. Burst pressure is 4 times working pressure by the SAE standard. If you want to go first class go with the 4 wire spiral wrapped hose (called CAT hose by some). That is the type usually found on "piston" type pump systems and newer high pressure systems. Also hardware store pipe fittings don't belong on the pressure side of a hydraulic system and best if not in the suction either. Most are only 150 psi rated. uploads/16335/SAE_hose_types.pdf" rel="nofollow - SAE_hose_types.pdf uploads/16335/sae_hoses.pdf" rel="nofollow - sae_hoses.pdf |
Posted By: Coke-in-MN
Date Posted: 05 Mar 2019 at 7:46pm
|
2 wire brade - 2500 max pressure ------------- Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something. "Challenges are what make life interesting; overcoming them is what makes life meaningful." |
Posted By: AJ
Date Posted: 06 Mar 2019 at 9:04pm
Found this, I know it a little blurry. Maybe someone has an actual brosure for the crawlers. Am I reading that right that it only has 1500psi hydraulic system? ------------- Can't fix stupid |
Posted By: Jim.ME
Date Posted: 06 Mar 2019 at 9:24pm
| That looks right for a gear pump of that vintage. 1000, 1250, 1500 were common system pressures in the day for equipment with gear type pumps. You will be fine with two wire braid hydraulic hose. |
Posted By: DMiller
Date Posted: 07 Mar 2019 at 5:36am
|
On my 7G I opted for what was more common and even as heavier feel more comfortable with heavier hose as takes abrasion or bumps and snags longer, better. |