what were they thinking, transmission issue never seen Options

[doobie123]

hi ya'll
I'm working on a 1975 914, 1.8, 5 Spd
it needs a clutch so I removed the engine and trans so I could give them both a bath and service the engine bay too.
while cleaning the trans I discovered what you see in the attached photos. on top of a big blob of silicone caulk was a smaller sized but no less of a blob of JB weld. underneath that was what is shown in the pic of what looks like a washer and a brass disc. they are also spinning in that hole
the location of this "fix" is at he very back of the trans where the trans bolts to a cross brace which bolts to the the frame, just above the speedo drive in the center of what looks like a cover separate but bolted to the trans case. it was obvious it was put there to stop a leak as that area was covered with dirt and grease.
so my questions are what should that cover look like? what is the correct fix? can that cover just be removed for inspection/repair/replacement without having to dismantle the trans? also, any info anyone has on something like this.
thanks in advance.

[sportlicherFahrer]

Gears slide off the shaft, and the shaft stays in the cover. Replacement cover should have the shaft already.

Tapered bolt on the outside of the cover and a bit of friction should be the only thing holding in that portion of the speedo drive. There is a replacement available that has 2 O-rings to prevent leakage. Replacement drive gear bushing

Bolt in question of coming loose is located in the end of the gear stack on the transmission. The speedo gear is attached in the end of it with a roll pin. Believe the head if the bolt is 30mm. Can be seen in THIS POST being held in Dave's(DNHunt) hand. Requires a deep socket to reach the head past the speedo gear. Check out the rest of his thread for a rough overview of how the parts you're working with go back together.