Electro 12 followed me home

[troutbum70 858]

Let the learning begin as I have a lot to learn about this horse and it's components like the sundstrands. Rear tires are the original wheel horse with many cracks but still holding air at this point. Seems to run well and move well, wanted to get the tranny and all warmed up really good but at 25 degrees outside that did not happen. Hub caps in real good condition as well as the seat, so I have much good out of it so far. First to be done is all fluids changed after learning how to properly drain the tranny and I assume will need bleeding at refill or maybe not. Any way another horse in the herd hi hi.

[Cvans 1,009]

Nice find. Gotta love the Hurst shift handle on the hydro control. 

[Pollack Pete 2,273]

Nice Electro12.Got one here in my pile that I've never fooled with.Yet.I will someday.Have fun with your new toy.I like the Hurst t-handle too.

[troutbum70 858]

Yes when the seller said he would throw in the hurst T handle as a bonus that was the deal brake'r to buy the tractor LOL. I am half afraid to do the tranny drain not knowing what I may find, hopefully previous owners have used it properly. Does the same fluid run the hydro pump and hydo lift? And is it necessary to drain lines and all? Does it require bleeding on refill or will all air escape up through fill tube? Which would dictate a slow refill as air escapes?

[wildman 205]

nice hubcaps  also

[troutbum70 858]

Seems maybe 5 quarts total capacity if system was bone dry?

[troutbum70 858]

Thanks every one and Daveoman1966 tnx for help offer praying it won't need a rebuild yet, but will see what old fluid looks like when I get it drained. I will be praying for no metals and other junk. 

[Searcher60 209]

On 1/27/2020 at 12:59 AM, daveoman1966 said:

That would be a 1970 Electro 12..  If original, it has the 5062 gearbox which has the 10-pinion Limited Slip Differential.  The Sundstrand power is model 90-2046.  Your tractor is, essentially, same as my 72 Bronco 14 which also has hyd lift...love it. 

The fluid drain plug is on bottom of the gearbox...a socket head plug, probably filled with dirt.  These Sundstrands are HYPER-SENSITIVE to dirt and debris in the fluid so wipe everything clean in the area BEFORE changing filter and/or fluid(ATF=pink..or brownish is 10w30 oil) .  The oil filter is part # 5990 and I highly recommend using OEM filter on this...about $14 bux on-line.  OEM parts here..  https://www.psep1.biz/arinet.asp?aribrand=TO#   Just enter your model # 1-7255 and clik thru the schematics. 

CAUTION... Don't pull up on the trans engagement lever (Parking Brake) when in motion.  Come to a COMPLETE STOP first.  If you pull the lever up while in motion, the internal Parking Pawl gets ground up and metal shavings contaminate the fluid, which ruins soft brass internal parts...causes loss in hydro pressure. 

PS... If ever it comes to needing a rebuild of the 90-2046 power unit, I can provide some home-grown how-to's with a short narrative.

         

Can I ask what is wrong or different about the NAPA Gold hydro filter vs. OEM? Price is the same, but the NAPA GOLD is around the corner. Also, do you sell the 103888 type pawl? Thanks

[Searcher60 209]

56 minutes ago, daveoman1966 said:

(1)..oil filter:  While after-market oil filters MAY spin onto the threads and be the correct dimensional fit,  I will ALWAYS defer to the OEM filter....taking away any question of any internal differences.   (2) Park Pawl.  Your Parking Pawl is (s/b) part # 5966...not 103888.  Here is a comparison pic. It is likely that your PP is ground down some, but it can be PROFESSIONALLY welded-up...to look like this new one.  (3) I don't have either style and neither is available...that I know of anyway.     

 

Thanks for the reply. I know which one I have, but if I can come across the upgraded pawl I and going to use it to manufacture another one and use the upgraded one in my Electro trans.  In this area, to have a professional welder “breathe” on that part, take $65-$100 bucks with you.

Why not put the newer, stronger, pawl and shaft? I like OEM also. But, I would hazard a guess, both filters are made in the same plant. That NAPA Gold filter appears to be very well made. Again, thanks.