Hydrostatic
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Garden Tractors
Forum Description: A great place to discuss the Simplicity and Allis Chalmers Garden Models
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=156373
Printed Date: 22 Feb 2025 at 4:46pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: Hydrostatic
Posted By: john2189
Subject: Hydrostatic
Date Posted: 13 Dec 2018 at 10:40am
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My simplicity sunstars hyd is very erratic when cold. steering,trans and lift. Whines a little bit. Don’t rember being that way in the past. Looks like it’s about an inch hi in the plastic line. .what could be wrong with it? Seems to be better when warmed up, but still not as good as it was. Does it have a belt that drives the hyd pump? John ------------- '41 Allis B '45 Allis B '49 Farmall Cub '72 IH Cub |
Replies:
Posted By: Alvin M
Date Posted: 13 Dec 2018 at 3:48pm
| change filter and oil first if it don't help need to know model # |
Posted By: talntedmrgreen
Date Posted: 18 Dec 2018 at 6:53am
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No, there are no belts in the driveline. How does your powersteering feel? The old sunstrands all have a whine to them, some more than others. I agree, fluid and filter and give it another shot. ------------- Patterson B1*B1/B1Forklift*B10*BigTen/B1Loader*B110*B208*B206*616*Homelite T16H/T8/T7/RM7E*Landlord/Loader/Trencher*Broadmoor717*Serf525*2110*7790*Legacy XL*Twin 20*Squire9*Squire6*JCPenny 494 |
Posted By: john2189
Date Posted: 19 Dec 2018 at 10:24pm
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sorry, havnt had a chance to change the oil yet. when its cold noting works right,or at all steering, lift or trans until it warms up. it does whine a little. Is there an online manual for this? John
------------- '41 Allis B '45 Allis B '49 Farmall Cub '72 IH Cub |
Posted By: john2189
Date Posted: 21 Jan 2019 at 1:53pm
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Is type F transmission fluid ok for the hydrostatic, or universal hydraulic oil? ------------- '41 Allis B '45 Allis B '49 Farmall Cub '72 IH Cub |
Posted By: DaveKamp
Date Posted: 20 Feb 2019 at 6:58pm
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If the hydrostatic level is high, that's because there's water in the bottom pushing it up. Do you like hydrostatic drive? if so, empty that stuff out immediately, and refill it with fresh new... it doesn't take much water through a hydrostatic pump to ruin it. ------------- Ten Amendments, Ten Commandments, and one Golden Rule solve most every problem. Citrus hand-cleaner with Pumice does the rest. |
Posted By: ac720nut
Date Posted: 21 Feb 2019 at 5:21am
| T would assume you have moisture in the oil same thing happens on a snowplow. change oil and filter and it should be good to go, Just my $.02 |
Posted By: john2189
Date Posted: 25 Feb 2019 at 9:08pm
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Thanks, been cold and not much time to work on it. supposed to get warmer soon will change oil then ------------- '41 Allis B '45 Allis B '49 Farmall Cub '72 IH Cub |
Posted By: DaveKamp
Date Posted: 26 Feb 2019 at 12:08am
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When it's really cold, it's always better to leave water in the hydrostat system, particularly inside the pump, so when it freezes, it can expand in the passageways and close-fitment parts, and break castings and internal parts...  Would be best if you could drag it into a heated shop, and drain it ASAP... I've replaced too many broken up hydrostats ------------- Ten Amendments, Ten Commandments, and one Golden Rule solve most every problem. Citrus hand-cleaner with Pumice does the rest. |
Posted By: john2189
Date Posted: 12 Mar 2019 at 3:29pm
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OK changed the oil with type F trans fluid and filter. No water. The oil was still reddish, not dirty and no burnt smell to it. The filter was very, very loose. Could it have sucking air? Everything, hyd, steering and trans works like new, no hesitation at all. John ------------- '41 Allis B '45 Allis B '49 Farmall Cub '72 IH Cub |