Am I hurting The SOS Transmission On A 6000

KCTractors

Member
Location
Central Wi
I know that I mentioned that the SOS transmission light stays on all the time before, but the transmission is working just fine. I did notice that the transmission wants to crawl when the transmission is cold when put in Park. I have to hold the brakes for awhile to stop the tractor
I thought if I changed the transmission filter, cleaned the screen in the suction tube and put new oil in that might help, but the light still stays on.
My question is, am I hurting the transmission by running that way? This on a Ford 6000. Thanks
 
I agree with Shaun, most likely a bad switch if the light is always on even when it's cold. It could also be a short in the wiring somewhere.
Easiest way to check lube pressure would be to tap the upper lube line banjo bolt for a 1/8 NPT fitting and check pressure there. The actual switch is inside the trans not far from that point.

As for the creep in park, mine does it as well. I think it's a quirk of some or all of the pre-'65 SOS trannies. I'm not sure why, never looked into it. I know my bands are adjusted properly.
 
(quoted from post at 21:49:14 09/26/21

As for the creep in park, mine does it as well. I think it's a quirk of some or all of the pre-'65 SOS trannies. I'm not sure why, never looked into it. I know my bands are adjusted properly.

This is normal with the SOS, especially when it's not warmed up yet. It's more acute if the oil is not correct. Park is an application of B2 & B3. These are both spring applied. Therefore, it takes a bit of time to drain cold or heavy oil out of them and allow them to apply.

I had a relative who didn't know any better than to put 80W gear grease in his. Then he wondered why he couldn't stop it.

This post was edited by Larry NCKS on 09/26/2021 at 08:57 pm.
 
When trans oil is cold all my SOS tractors are slow to go into park too, makes it a real pain trying to hook up implements. Checked and re-checked band settings never helped, what did help was putting a dump valve on the B2 test port to drop the oil pressure faster so the spring would apply the band faster. I used steel brake line with a shop blow gun with the dumped oil going back to the top cover. The blow gun was bolted to the left rear step so my left heel could it it while the brakes were held on. When trans is warm, it's not needed, but sure helps when cold.
 
I had a 4000 with the SOS and it too crept a bit in the winter. A real PIA to hook up....finally just started shutting it down to
connect.
 

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