Attempting to go through my transmission to replace bearings. Received the bearing kit and also have a copy of the original PDF service manual. Trying to separate the transmission case from the adapter plate (step 12 from service manual). I can get them separated by about 1/2 inch and then it gets hung up. Dont want to put to much blunt force on the transmission case with the rubber hammer. Also as I was pushing/pulling the gear assembly gently to try and separate them, one of the fork rods slid towards the transmission case and now the gears will not turn. Hope I havent damaged anything. All the gear components look in good shape from what I can see with the rear extension assembly off. Any help on this would be greatly appreciated.

I had the same issue, its the dirt buildup behind the bearing getting in the way and making it more difficult to pull out of the housing..
I used two pieces of wood (so as not to damage the casing) and levered it off.

Could you do me a favour and post the bearing and seal part numbers that came with your set ?

Thanks
Andy

Thanks Andy. Set a block of wood on the end of the main input shaft and after several blows with the rubber hammer it backed out of the transmission case. There was no way this was going to come out by holding the gear assembly and hitting the backside of housing as the service manual calls for. That main bearing is really set in there good. The shop that sold me the kit also repairs these transmissions and he does the same thing. All the gears look in great shape. Kudos to Nissan once again. The main bearing is the only one that seems to require replacement but will change all of them out since I have the entire kit. I attached a close up of the bearings and seal for your reference. The seal appears to be made in Taiwan and the bearings in Japan.

Attach file:

---

  bearings.seal.jpg (45.27 KB)


  rebuild.kit.jpg (100.56 KB)


  gears.jpg (61.89 KB)


  gears1.jpg (112.57 KB)

OK, good, I was a bit worried about it when i first did it and also got reassurance from this site.
thanks for the pictures, thats goood information to keep hold of for next time,
Andy

G,
Will you also be replacing the synchros?

O'reilly Auto Parts sells rebuild kits -- the 60A kit is $146 w/o synchros or $254 with synchros.

The rebuild kits don't have all the bearings, only the Ball Bearings and two of the needle bearings. The bearings for each gear are not included, nor are the welch plugs.

Tom..yes replacing the synchros as pictured. There are 5. Not sure what I am getting into here. Will have to go real slow and take lots of pictures along the way. First time ever opening up a gearbox like this. Engine is in the machine shop and will take several more weeks so have time to get the gearbox done. Sent the cam off to Isky. Datsun guys here recommended them. Called their tech (Rob) and he seemed very knowledgeable about the A series engines. It will be a very similar grind (260/.425) as to what you got from Delta. He referred to it as a mild street cam.

DD...got this kit from a supplier here in the states that rebuilds them himself. Paid $199 with the synchros. Looks to be quality bearings (made in Japan). You familiar with the brand? I think he sent me an extra main input shaft bearing. There are two of those and two smaller ones, total of 4 and two needle bearings. I can only see two roller bearings with the gear assembly all together. Once I get this opened up, I will post back with questions/comments.

Yes, almost everybody uses Japan bearings. For example, Timken boxed bearings are stamped as made in Japan. But they have opened factories in China, so newer bearings are made there for your premium vehicles

What I see in your photo:
BALL BEARINGS
(1) 32219-H8900 cluster shaft Type 304 Nachi 6304N C3
(1) 32273-H7300 main shaft Type 305 Nachi 6305N C3
(1) 32227-H9700 main shaft 22x50x14 Nachi 62/22XA1
SEALS
(1) 32112-H7300 O-ring input shaft
(1) C2136-H5000 seal output shaft TCM 30X45X 10TC-BX
SYNCHROS
(5) 32604-H9700 RING-BAULK

I'm guessing he unboxed bearing in your photo is the input shaft Ball Bearing? (32203-H7300 Type 206)

Is there an input shaft seal?

I can't make out what the small parts are, or what the black thing is?

This is what i managed to get for my rebuild, though i only ended up changing the main input and output bearings.
This was about a year ago.
Some of the bearings had extra metal oil shields on them which i had to remove.
I took me quite a while to find the correct numbers which is why i asked if you would post some pictures. I couldnt find the part numbers of the needle rollers at the time.
I see DD has updated the Tech-wiki for future reference.
Thanks DD for your continued efforts in updating this valuable resource.

Attach file:

---

  Gearbox 60A bearings.jpg (94.34 KB)