702

[dkg520 509]

So I picked up a 702 that had been parked outside for a long time with no cover.  The trans was locked so I took good advice and drained about 2 quarts of water out and filled it with ATF.  After working the axles back and forth everything finally broke loose and moved like it should.  Before I drained the water the trans would shift into all 4 gears but the axles would not turn. Now that both axles are free ind the input shaft and brake shaft all move freely the trans will shift into 2 and 3 but will not shift into 1 and R.  Any ideas or suggestions would be appreciated.  Thanks

[ri702bill 8,327]

No good fuzzy fieling here. Water kills the gears and bearings. BEST bet is to drain it, bite the bullet, pull it, disasemble it and cost out the damage... Lowell has the rebuild kits, we have the video tutorials to fix it... It's what we do.... 702 - my favorite...

[stevasaurus 22,755]

dkg520, you have wasted a lot of time.  You need to open the trans...use the drained oil to clean the gears and insides.  You may have to replace some bearings and all 4 seals.  It is worth it!!!  If you have not seen this, here is a video to show you how to do this. This is a 4 speed, but it is the same inside...except for the brake drum shaft.  I explain that. 

   If you like, here is the same trans with out videos.  second thread. 

 

 

[oliver2-44 9,756]

52 minutes ago, dkg520 said:

trans will shift into 2 and 3 but will not shift into 1 and R.  

I would suspect the shift forks are rusted and not moving back and forth completely.

Just curious, was their any sign of a shifter boot left on it?

Was their any oil at all left in it?

Was the top of the transmission covered in old oil residue? 

I have a theory that you can inspect a tractor and tell if a transmission has water in it by the oil on top of the transmission around the shifter hole and down the sides. 

as the transmission fills with water, the gear oil floats, as more water enters, the oil gets pushed out the shifter hole.

I've picked up a couple with water and past water to what turns into greasy rusty mud.

  As said the transmission really should be opened up and gone through.

 

Edit:Steve types faster than I do!

 

 

Edited June 26, 2023 by oliver2-44

[ri702bill 8,327]

and,  Drain it, unbolt it, crack it open, see what you are really up against...It may not be a cheap fix - you decide.....

[stevasaurus 22,755]

I love you Oliver2-44!!  Hi Jim, how you doing??    I learned to type in the Navy.  

Edited June 26, 2023 by stevasaurus

[dkg520 509]

There was only a very small piece of the boot left.  When I drained it only about a quart of clear water came out. No oil at all. 

[ri702bill 8,327]

3 minutes ago, dkg520 said:

There was only a very small piece of the boot left.  When I drained it only about a quart of clear water came out. No oil at all. 

And that usually ends up with the innards being unuseable, while everyone slept, except Mother Nature............

[Achto 27,590]

4 hours ago, stevasaurus said:

dkg520, you have wasted a lot of time.

 

It was suggested to him to give it an ATF soak. This would help free things up and make disassembly easier. 

[oliver2-44 9,756]

5 hours ago, stevasaurus said:

I love you Oliver2-44!!  Hi Jim, how you doing??    I learned to type in the Navy.  

I'm doing great Steve, Busy with all kind of family things and a little tractor work every now and then.