840 wheel loader
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=180716
Printed Date: 19 Jul 2025 at 7:48am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: 840 wheel loader
Posted By: 53 ca
Subject: 840 wheel loader
Date Posted: 23 May 2021 at 3:53pm
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have a 840 b wheel loader that we changed motor and hydraulic pump on. Also changed transmission fluid. Now it will not pull itself up any grade until it gets warmed up. say about 10 to 15 mins of run time. what fluid should I have used in it ? THANKS for any info. Jerry |
Replies:
Posted By: orangeman
Date Posted: 24 May 2021 at 6:37am
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Jerry: the information on the hydraulic fluid should be covered in the 840 Articulated Loader Operators Manual Form SV-112B - Part No 1012879-1. Unfortunately, I don't have that in doc. in my periodical library. If the fluid is not the problem, it might be good to start with a clutch pressure check or could be also worn splines on the Torque Converter Pump drive, flex drive plate failure or low clutch pressure which would occur as a result of a weak regulator valve spring or regulator spool sticking. The later could be remedied through removal and cleaning possibly. The Service Manual for the AC 840 wheel loader is form No. ISM-17 and part number 1013042-5. Orangeman
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Posted By: steve(ill)
Date Posted: 24 May 2021 at 9:24am
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are you sure the level is correct ??? .... https://www.allischalmers.com/forum/840-ac-wheel-loader_topic27087.html" rel="nofollow - https://www.allischalmers.com/forum/840-ac-wheel-loader_topic27087.html ------------- Like them all, but love the "B"s. |
Posted By: 53 ca
Date Posted: 24 May 2021 at 8:29pm
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pretty sure it is good. Just for the info how do you check the fluid level? I was told to use Dextron ATF . Right or wrong?? I will check fluid when I get by the loader this week. Thanks, Jerry
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Posted By: steve(ill)
Date Posted: 24 May 2021 at 10:08pm
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reply #25 says there should be TWO marks... running, and motor off ?? https://forestryforum.com/board/index.php?topic=85582.20" rel="nofollow - https://forestryforum.com/board/index.php?topic=85582.20 ------------- Like them all, but love the "B"s. |
Posted By: 53 ca
Date Posted: 25 May 2021 at 6:56pm
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Thanks for the info, When I get back to the loader I will do some more checks and see where things are. Where can I get a service manual for it? Thanks again |
Posted By: steve(ill)
Date Posted: 25 May 2021 at 8:17pm
e-bay.............. not cheap ------------- Like them all, but love the "B"s. |
Posted By: Ian Beale
Date Posted: 26 May 2021 at 2:48am
| Not expensive compared to what might happen without though |