R62 high hyd oil temp
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=203141
Printed Date: 23 Nov 2024 at 5:16am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: R62 high hyd oil temp
Posted By: Leon B MO
Subject: R62 high hyd oil temp
Date Posted: 10 Sep 2024 at 6:41pm
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Shelling corn after about 15 minutes oil temp light comes on. We checked solenoids none appear to be bad or sticking. Oil cooler is clean oil level is inside glass the hydraulic filter at the rear of combine is reading 200° Plus when light comes on the valve body under the front left corner of cab is also 220° Plus any help would be appreciated as far as where to start Leon B Mo ------------- Uncle always said "Fill the back of the shovel and the front will take care of itself". |
Replies:
Posted By: Ron(AB)
Date Posted: 10 Sep 2024 at 6:59pm
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That's similar to my hyd problem on an earlier post. Quick heating up of the oil in the entire system means the pump has wear and internal bypassing. Could be as simple as the brass bushings in the pump need replaced. Do things move slower than normal? Might be able to see a tiny bit of brass in the hyd filter. If it is hot outside, 200 might be normal operating temp? Then don't worry. ------------- 405, 7000, 7050, 8050, 8070, L3, 2300 & 2600 disk |
Posted By: Leon B MO
Date Posted: 10 Sep 2024 at 7:41pm
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My son runs the machine but he said the hydraulics for the steering, auger in and out and header raise and lower seem to be working fine. We did replace a hydraulic hose from the pump to the lateral tilt valve assembly due to a hole, that was before we started harvest also replaced the hydraulic filter under the radiator. The filter for the hydrostat was replaced last season. The pressure line from the pump going up the left side of the machine towards a valve body under the cab is warm to the touch immediately after starting the engine and leaving it at an idle and gets hotter the longer it runs without the separator running or engine at high idle. ------------- Uncle always said "Fill the back of the shovel and the front will take care of itself". |
Posted By: DrAllis
Date Posted: 10 Sep 2024 at 7:55pm
| I think you have a cartridge stuck ON . Number 1 is the master coil I think. Disconnect the wire on number 1 with the engine running and see what happens. |
Posted By: DiyDave
Date Posted: 10 Sep 2024 at 8:27pm
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Here is a good application to use a portable IR thermometer on. Tracing out the hyd circuit with the thermometer, whatever is the hottest, that's where your problem is...
Make sure you are using it right, though...  https://youtube.com/shorts/VoMhCG6MA9g?si=bjCtwbIx55QvewsU" rel="nofollow - https://youtube.com/shorts/VoMhCG6MA9g?si=bjCtwbIx55QvewsU ------------- Source: Babylon Bee. Sponsored by BRAWNDO, its got what you need! |
Posted By: Leon B MO
Date Posted: 11 Sep 2024 at 7:11pm
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Doc, when I take the wire off of the master solenoid which is the farthest to the right away from the machine none of the other functions of that valve stack will work. Put the wire back on and the reverser works fine head goes up and down fine auger in and out are fine. I cannot verify the real variable speed or lift because I am shelling corn. My old Ace AC mechanic seems to think it's an issue with the hydrostat. We did check both check valves on return lines going back to the reservoir. They looked to be working okay with no obstructions. I have an operator's manual and a parts book but I do not have a service manual for the charge pressure of the hydrostat. I'm at a stand still and looking for help. No help with local shops, everyone is 3 weeks out of don't even leave their shop. Leon B Mo ------------- Uncle always said "Fill the back of the shovel and the front will take care of itself". |
Posted By: DrAllis
Date Posted: 11 Sep 2024 at 8:47pm
| If it is truly a problem with the hydro drive itself, I'd expect you to be able to run the engine at full throttle with the separator engaged (like you were harvesting) and the hydro handle in NEUTRAL, and experience no oil heating. With the machine moving and being propelled thru the field, I might expect heating if there is a hydro problem. You are running 2nd gear, right ?? |
Posted By: Leon B MO
Date Posted: 12 Sep 2024 at 6:03am
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2nd gear ------------- Uncle always said "Fill the back of the shovel and the front will take care of itself". |
Posted By: DrAllis
Date Posted: 12 Sep 2024 at 6:25am
| So, give it the "running while sitting still at full throttle test" and see if the oil still heats up. |
Posted By: Leon B MO
Date Posted: 12 Sep 2024 at 9:06am
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While everything was cool this morning we started the combine and began checking temperatures everywhere on lines. The valve body for the variable speed real under the cab started to warm up quicker than anywhere else. We had that spool out yesterday did not find any problems. Can I back out the manual override and do any good there? All other return lines and pressure lines we're pretty consistently in the lower 90s after about 15 minutes of running but that valve was 120. ------------- Uncle always said "Fill the back of the shovel and the front will take care of itself". |
Posted By: DrAllis
Date Posted: 12 Sep 2024 at 9:21am
| Is the header hose connection screwed up onto the valve fully TIGHT ??? If it isn't tight, oil cannot flow thru the hose. |
Posted By: Leon B MO
Date Posted: 12 Sep 2024 at 9:59am
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Yes ------------- Uncle always said "Fill the back of the shovel and the front will take care of itself". |
Posted By: DrAllis
Date Posted: 12 Sep 2024 at 10:16am
| Disconnect the wires from the coil on that valve under the cab floor to be sure it isn't getting an electrical signal all the time. |
Posted By: Leon B MO
Date Posted: 12 Sep 2024 at 2:04pm
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Backed out the manual override in that valve has been running for 3 hours. Gonna remove, inspect and clean valve first chance we get. Two new hoses also. The outer coating of hyd hose is peeling off, wondering if the inside of hose is coming apart. Thanks again for the input. Leon B ------------- Uncle always said "Fill the back of the shovel and the front will take care of itself". |
Posted By: cwhit
Date Posted: 12 Sep 2024 at 7:26pm
| Just a thought Leon, but check those hyd. couplers. Had one go bad on our 62 several years ago and was causing us heating oil problems. They didn’t leak,just restricted flow. |
Posted By: Leon B MO
Date Posted: 12 Sep 2024 at 8:32pm
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That's the weird part, I'm shelling corn, so there is no couplers. I also have the single point hookup for the grain head. So lines from the variable reel speed valve, one input from pump, 2 lines going to single point,( not being used while the corn head is on) and a return line that runs from variable reel speed through the hydrostat filter, hydro and back to reservoir through a 15psi check valve. Chance of rain hear overnight, if so, the reel valve is coming off and new hoses. Curtis pushed it pretty hard in 220 corn today and no light but that is with the manual override screw in the variable speed valve backed off. The only bright spot is 220 bpa corn. For where I'm at that's more than exceptional. Thanks again Leon B Mo ------------- Uncle always said "Fill the back of the shovel and the front will take care of itself". |
Posted By: Leon B MO
Date Posted: 13 Sep 2024 at 2:36pm
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Update. Took reel speed valve off, disassembled and found one of the orifices had damage to screen and plugged.So got one coming tomorrow. Drizzle here today and the corn is still 17.5 so not really pushing hard yet anyway. Leon B Mo ------------- Uncle always said "Fill the back of the shovel and the front will take care of itself". |
Posted By: SteveM C/IL
Date Posted: 13 Sep 2024 at 7:41pm
| ...so your 180 bu farm is making 220 eh? |
Posted By: Leon B MO
Date Posted: 13 Sep 2024 at 8:31pm
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We had timely rain here, little more population and little more nh3. Corn planted after tax day seems better because of a wet spell late April. I have no reason to embellish what's in the bin, I'm just happy with a higher yield. We need it with a 1985 selling price. Thieving, crooked s o b s. Sorry if I offended anyone Leon B Mo ------------- Uncle always said "Fill the back of the shovel and the front will take care of itself". |