JD 350B Reverser Rebuild - Looking for Parts

AT 29086 Isolator? The original isolator is in many separate pieces - posts on the flywheel, individual heavy springs, a center plate with posts and facing, etc. The center piece can often be repaired and it's the most expensive part.
Deere changed this old setup to the new AT77319 when doing their "Relife" program on updated 350s - but it's expensive.

And - T16010 - Planet Pinion Carrier? There are no planet gears in the reverser - so where is there a planet pinion carrier? Only gears are four straight-cut spur gears - one on the front drum/shaft, two on the reverse counter shaft, and one on the rear drum.

Planetaries on a Powershift 8 speed - yes - like in a 4020 tractor or a 540 skidder - but not in a 350 crawler. What am I missing here?

I don't know what parts you actually need - but whatever they are - sounds like you ought to buy used. Do you know exactly what is needed and why?

page 35-12 of the parts manual, part T16010 - Planet Pinion Carrier, it's in between the piston and the seals within the reverser rear clutch assembly.
I'm going to see the machine sunday, mechanic is helping me as I don't have equipment to pull the motor myself.
Spoke with him this evening, says that the spider, and output shaft splines are worn over 50%. The reverser clutch packs themselves are in good shape, but the other moving parts are not. The housing seals are seized to the housing, etc. I'll snap some digital photos.
My mechanic is anxious for me to take a look at the machine as he does not want to replace stuff just to replace stuff.
Of course, like most, I am stuck in the situation of not wanting to have to brake the machine down over again if something not replaced fails.
He said the isolator is not happy either, and should be replaced.
Thanks as always for your invaluable input.
Joel

I don't get the terminology - I guess that's the problem. There are no planetaries in that reverser. Maye some bored engineer is choosing silly names? But - each clutch plack has a drum assembly, a piston, and rings - that must be where your number comes from? My 1010 and early 350 Deere reverser book calls the parts in the back - plate T15794,carrier T15791, piston T16011, back plate T15790, and rear spider T13933. The T16010 you cited is called a "carrier" and is basically just a newer piston that holds two rubber sealing rings. It replaced the older T15791 that used iron rings instead of rubber. If your's is bad - I'll take your word for it - but it's usually one of the parts that does NOT need replacement in a trashed reverser. In regard to the shaft - if the splines towards the rear are bad - it's likely the reverser has been loose against the transmission case. It's supposed to be held tight and aligned with dowels. If they are loose - you're kind of in a mess unless you fix it all correctly. How's the other end of the splined shaft setup - e.g. and i.e. the splinded coupler the transmission shaft? When the reverser shafts goes bad, the trans. shaft is also often bad. And again - the isolator is not one unit - it has many separate pieces. And you say the housing seals are siezed - I don't know what you mean. There is an oil seal in front - in the trans. pump housing, and one on the rear in the rear bearing quill. What seals are you talking about?

"I don't get the terminology - I guess that's the problem. There are no planetaries in that reverser." - The Planet Pinion Carrier, which there is two one in the front clutch assembly and one in the rear, is located in between the busing and the piston on both assemblies. I understand the iron rings to be seized?

"but it's usually one of the parts that does NOT need replacement in a trashed reverser." - I will know more when I see the machine on Sunday.

"In regard to the shaft - if the splines towards the rear are bad - it's likely the reverser has been loose against the transmission case. It's supposed to be held tight and aligned with dowels. If they are loose - you're kind of in a mess unless you fix it all correctly. How's the other end of the splined shaft setup - e.g. and i.e. the splinded coupler the transmission shaft? When the reverser shafts goes bad, the trans. shaft is also often bad." - I will follow-up on Sunday.

"And again - the isolator is not one unit - it has many separate pieces." - He is saying the springs are weak, not certain on the other issues with the isolator, I'll follow-up on Sunday.

"And you say the housing seals are siezed - I don't know what you mean. There is an oil seal in front - in the trans. pump housing, and one on the rear in the rear bearing quill. What seals are you talking about?" - The housing is the unit which the forward, reverse and lube oil preasure go into and then it directs the oil to either the front, rear packs or neutral. I'm not clear on exactly why it needs replacement, will follow-up on Sunday.

Again, thank you very very much for all the time you've taken to respond. I want to replace what needs to be replaced but don't want to replace what does not need to be replaced.

Sincerely,
Joel