1979-1993 & 94 Conv [Subscribe to Daily Digest] |
What exactly are you trying to accomplish? Are you trying to change the oil for the entire transmission? If so, you need to drain the oil either from the rear cover of the transmission or through the drain plug on the bottom of the transmission (earlier cars have a 3/8" square drive plug, later cars have a 12mm allen, some really late cars don't have the plug at all).
The primary drive chain/sprocket set, in manual transmission cars, sits higher up than the rest of the transmission. This means the oil must be lifted up to reach the lower sprocket. The oil does this via some splash and slinging action from other gears deeper within the transmission. However, when you take off the front half of the primary drive case, the oil in the primary drive housing drains out. In this case, you must refill the primary drive case with some small amount of oil. Half a quart sounds about right.
You never need to change the primary drive oil on its own, because it is circulated into the rest of the oil in the transmission. The primary drive just needs to be filled if you've opened the primary drive case.
If you're still following along, I will also say that when you change the oil for the whole transmission, through the plug or rear cover as I mentioned firstly, you will miss some oil in the primary drive. It will stay in there and not get changed, unless you wait a long time for it to all ooze down out of the primary case, through the rest of the transmission, and back out to the drain hole. You can't really do anything about this, unless you want to remove the front half of the primary case. This would be stupid. It's a really hard thing to seal up. I GUESS jacking the car up a lot in the front and maybe on one side or the other could accelerate the primary case draining into the rest of the transmission, but I don't think it's worth it. There's only half a quart in there (one cup) so it's a negligible amount to not change at each oil change.
FINALLY, to answer your question, the "top access aperture" is a goldish colored circular steel plate about the size of a spaghetti sauce jar cover, with a large piece of bent wire about the thickness and color of a bucket handle holding it in place on the front of the transmission, in front of the engine, right near the radiator. If your car is a turbo, this will be hiding under a turbo pipe. If your car is not a turbo, it will be fairly visible. Front and center, directly aft of the front engine mount. If you really want to add oil here, you will have to put it in with a narrow-nosed funnel that you can slip in past the big metal gear you will be able to see within the transmission.
Good luck with whatever you're trying to do!
posted by 98.216.24...
, Mon, 16 May 2016 10:24:43
, Mon, 16 May 2016 07:47:55
, Mon, 16 May 2016 05:28:48
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