Rebuilding my Triplex

[Freightrain]

Well, my initial intent was to replace it with something newer.  But, I thought I might just see what I had and make a decision later.

After tearing into it, it was just one bearing on the mainshaft that was the big problem.  I have it completely apart and washing it up now.

Fresh out of the truck.

Lids off, back box off.

Compound gears.  Good shape.

Grimey parts

Getting mainshaft out.  Sleeve was stuck.

Clean parts.

Mainshaft out.  Someone plugged the 1st oil galley, hence bushing worn and bearing junk.

Trashed, why it had 1/4" slop in shaft.

Dressed the ID of sleeve so it slips over shaft easily now.

Main box going for cleaning this week.

 

I have basic bearing list.  Everything seems available.  Even the dreaded "double taper cone" in the back box.  I found a couple new Timken on eBay for under $100?  I heard that was the whole deal with rebuilding these old transmissions.  All the rest are off the shelf.

 

Will update as I go along in the next few weeks.

I had no clue as I dug into this thing but I figured why not?  It is already in bad shape, and if I can vastly improve it I might as well before going through the work of replacing it with an Eaton.  There is still a lot of work to be done but I think it will work out in the end.

I want to thank Matt and Kevin for their assistance in getting it to this point.

 

[mechohaulic]

now there a memory maker. unlike todays iron (most of which are automatics) hardest part of rebuilding a tri/quad/duplex was picking the right color paint for the case outside.  a self taught with mentors is knowledge never found in books. how lucky I consider myself to be involved back then. today it's parts changers not many rebuilders. units looking good!

[mechohaulic]

seals for two back half input shafts  ?? 

[Freightrain]

2 hours ago, mechohaulic said:

seals for two back half input shafts  ?? 

Not sure what you are referring to?  The oil tubes between the shafts?  Mine are likely worn but nothing I can do about those.

[mowerman]

Nice going bud. Thanks for sharing. Looks like you’re well on your way. Good luck.

[mechohaulic]

On 1/6/2025 at 5:41 PM, Freightrain said:

Not sure what you are referring to?  The oil tubes between the shafts?  Mine are likely worn but nothing I can do about those.

two outside shafts from front case to rear;(for compound stick) do they not have seals ;; 1in od ? on rear half ??? front half is external /dry.  recall shaft would be worn  resulting in slight oil seepage.