Anyone out there know how to remove a stubborn front cover on the dogleg 63a gearbox? I have used WD 40 along the sides and around the main drive gear. All bolts are off and don't want to put to much force on it. Tried tapping with a screwdriver where the front cover mates with the transmission case thru the release lever opening. Doesn't want to budge. In the process of shipping to a buyer but before doing so, I want to make sure the internals look good. Also if anyone out there has a rebuilt manual in pdf format that would be much appreciated.

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  63a.front.cover.JPG (106.08 KB)


  63a.side.JPG (124.94 KB)

generally, just tap it, and it lifts off. However I've had some gearbox parts stick (not the front cover, but other parts) that are supposed to just come apart. Might be old jellied lube oil or something

The rebuild manual is the 1977 or 1978 B210 Service Manual (north america). It doesn't tell what to do for sticky parts. It doesn't even say alot about how to disassemble. But it has specs, photos, diagrams and procedures

When the 63A first appeard 1976-1/2, they put out a supplement, which was rolled into the next service manual (1977). 63A is also covered by 1977-1979 S10 "200SX" manual and 1980(?) A10 "510" manual

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  1978 front cover.jpg (87.16 KB)


  1978 index.jpg (117.63 KB)


  1978 rear cover.jpg (66.57 KB)


  1976 B210 Supplement 1 FS5W63A-a.jpg (121.18 KB)


  1976 B210 Supplement FS5W63A-b.jpg (81.02 KB)

From the parts catalog, it seems like all the other covers ... just comes off when the eight bolts are removed. Only there is no o-ring or gasket as used with the other gearboxes

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  63 cast steel front cover 7477.jpg (39.08 KB)


  63A Front Cover and oil seal.png (26.44 KB)


  D32-02-2b.png (88.31 KB)

Thanks DD. Interesting that there is no oring behind the front cover. I was hoping someone has a rebuild manual similar to the 60a 5speed which I used when I changed bearings and synchros. About a 20 page pdf file and very well written. I couldn’t find something similar for the 63a on this forum. I imagine this gearbox has never been opened up, so after 40+ years it may require a little more force. Will keep spraying and tapping unless someone has a technique to pop it off. Can’t get the right leverage to separate it from the bell housing.

Anyone have the replacement part number for the front seal on the input shaft either from National Seal or Beck Arnley or any other seal supplier?

Nissan 32113-N2101 SEAL-OIL FRONT COVER Nissan $10.38 USD

SKF 13907 Rockauto 5.95 + shipping

also available from Honda, Ford, etc

Thank you so much for the information.
BTW, I found the shop manual for a 1979 200SX (S10) that has a complete section on the rebuilding of the 63A tranny.
The file is way to big to attach.
Maybe I can email it to you instead and then you can post it.
Let me know how you want to go with it as I'm sure others would appreciate having that for their reference.

I can sympathise with you. Yep mine was an absolute B...CH to get off.
Ended up making a tool get under a few edges at once and went very slowly
dp

I found a nice little trick in getting that stubborn plate off. If you use a 50/50 mixture of Dexron ATF and acetone and apply it around the entire perimeter of the plate and inside each bolt hole for a few minutes, it will easily come off with just a light tap.
The acetone really helps to break the old sealant. I tried different break-free products and nothing worked except for this 50/50 mixture. Don't risk breaking that plate by forcing it. Use the mixture and let it work. If it doesn't come off within a few minutes, reapply the mixture in liberal amounts. It really works.