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Subject: SOS tranny

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poderac    Posted 12-17-2019 at 08:23:55 [URL] [DELETE]        [Reply] [No Email]  
  • SOS tranny
  • What oil does it take?
    Does it have a filter?
    Is there 2 or 3 oil compartments?
    Tranny, differential, and is there a compartment between them?

    First time changing, so any advice is appreciated.

    Kirk-NJ    Posted 12-18-2019 at 06:10:41 [URL] [DELETE]        [Reply] [Email]  
  • Re: SOS tranny
  • Valvoline VV813 oil. NH 134373 SOS Oring.

    Dean    Posted 12-17-2019 at 08:43:32 [URL] [DELETE]        [Reply] [No Email]  
  • Re: SOS tranny
  • There is more than one design of the S-O-S transmission. What model tractor do you have?

    Transmission uses CNH Ambra oil or equivalent. Only one sump in transmission.

    The S-O-S has a filter. Where it is located depends upon the model of the tractor. Pre 65 is beneath the top cover. Post 64 is serviceable from the exterior on the left side.

    Note: DO NOT attempt to remove the top cover until you have read and understood the procedures for doing so in the correct Ford service manual. Use of improper procedures can result in expensive damage, even resulting in the need for parts that are no longer available.

    Dean

    poderac    Posted 12-17-2019 at 10:24:31 [URL] [DELETE]        [Reply] [No Email]  
  • Re: SOS tranny
  • Thanks. Pre 64 600 series. I think I'll just add oil and let the filter go. How do you check the oil level?

    Kirk-NJ    Posted 12-18-2019 at 05:17:27 [URL] [DELETE]        [Reply] [No Email]  
  • Re: SOS tranny
  • Probably best to look at the numbers on the side of the trans. It could have been changed out from an ORC to a DDC trans in the exchange program in the mid 60s. My 59 gold demo had a 65 DDC trans in it

    Select-O-Speed    Posted 12-17-2019 at 13:24:16 [URL] [DELETE]        [Reply] [Email]  
  • Re: SOS tranny
  • Wally the fill and level plug is on the right side of the trans housing. The filter mentioned above is under the top cove and is only a bypass type. There is a intake strainer located in the bottom of the Interlock Servo cover on the Left side of the trans housing. It also serves as the drain. The strainer has a round and stepped end cap that fastens with a small strap with a bolt. Undo the bolt, work the cap back and forth slightly while pulling it straight out then when screen appears rotate the drain hole in the end straight down to facilitate complete drainage of oil. When oil slows to a trickle you can remove the screen to inspect it's contents. That will tell you a great deal about the condition of the trans. Metal shavings and clutch/ band lining will be the indicators. Smell a sample of the oil to see if it has a burned aroma. Like was said by others the transmission uses the UTF type fluid. SoS.

    Richard NY 2N    Posted 12-17-2019 at 08:38:16 [URL] [DELETE]        [Reply] [Email]  
  • Re: SOS tranny
  • Which model tractor do you have? Repair or owners manual probably has what you are asking. My 641 with 4 speed has 3 cavities. Good luck with it.

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