Changing the transmission fluid

[Joker69]

So, being the good little newbie that I am, I just got my Bentley Manual and was browsing thorugh the Lubrication section.

I got to the tramission fluid change section which is something I am planning on doing since I have no idea when or if the PO had it changed.

Problem is, when I get to tyhe section on "Changing the transmission fluid", it only goes over how to check the level and add more if needed. It doesn't mention draining it.
Where do you drain the fluid so it can be changed out? I see where to fill it, but not drain it.

Thanks....
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"The weather out there today is hot and shitty with continued hot and shitty in the afternoon. Tomorrow a chance of continued crappy with a pissy weather front coming down from the north."


'69 Fat Chick

[wompninja]

On the bottom of the tranny is a huge allen head bolt. You need to find an allen wrench that will fit in there. Unscrew it and that's how you drain it.

[Glenn]

The drain plus is on the bottom under the differential.

REMOVE THE FILL PLUG FIRST. Because if you drain it first and can't get the fill plug out, you have problems.
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Glenn
74 Beetle Specs | 74 Beetle Restoration | 2180cc Engine
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[Joker69]

Is the fill plug also a allen head? That's what they seem to show in the Bentley anyway. They are BOTH allen heads?


Glenn> I will definately do that. Thanks for the tip.
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"The weather out there today is hot and shitty with continued hot and shitty in the afternoon. Tomorrow a chance of continued crappy with a pissy weather front coming down from the north."


'69 Fat Chick

[73stroker]

yes
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1973 standard Type 1
2276cc
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[neil68]

Both the filler plug and drain plug should be 17 mm allen key on your '69. I prefer using a 17 mm socket (bought at my local parts store or http://www2.cip1.com/ProductDetails.asp?ProductCode=ACC-C10-7165), as it allows the use of a rachet, for leverage.

The drain plugs are usually magnetic, so you'll need to clean off any metal shavings. Don't over tighten the plugs when re-installing as the case can crack in some instances.

Good luck!
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Neil.

Der Kleiner Rennwagens
68 Beetle 2332 cc, 204 WHP
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[Joker69]

Excellent. Thanks guys. That'll be my next duty as soon as my shoulder heals up.
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"The weather out there today is hot and shitty with continued hot and shitty in the afternoon. Tomorrow a chance of continued crappy with a pissy weather front coming down from the north."


'69 Fat Chick

[Bruce]

[whobba]

I am just now changing the transaxle fluid on my '78. I found that it's easier if you take the left rear wheel off - 'cause you can get right in there to the fill plug. I've been wondering though if I should use synthetic transaxle fluid like Redline. My mechanic friend recommended it.

The filler nut was on there really well, it took some serious muscle to get it going. The drain magnetic plug has been doing its job, as there were little specs of metal neatly clinging to the magnet. It was almost like a metallic dust.
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[glutamodo]

Synthetic works really good in there, especially in colder weather.

Get one of those hand pumps that fit onto the hypoid fluid bottle, makes filling the tranny a lot easier.

I also prefer a socket for removing and filling the tranny. But when I got my first VW almost 20 years ago all I could find at the time was a giant Allen wrench, which also worked pretty good.

[Frodge]

How are you folks changing the fluid without a lift if the car needs to be level?

[Zundfolge1432]

Four jack stands at equal height on level ground

[Frodge]

I figured...

[Zundfolge1432]

Think the really cool people that lower the cars,

[Frodge]

Lol

[Frodge]

What is the consensus about driving up in ramps. Draining, putting about 2.5 quarts in. Lightly putting fill screw in, drive down ramps and recheck level?

Also Muir warns against overfilling so you don't blow the seals out. I find it hard to understand how you could overfill it if the car is fairly level. Wouldn't it start leaking out once it was up to the bottom of the hole?

Also, a concern as always with transmissions in general is changing the oil. I've always heard the tale that when changing fluid out, when you add new, it can create leaks that weren't there beforehand...

[Old n' slow]

[Tim Donahoe]

Actually, the chance of under filling is as possible as overfilling. You can pump the oil in too fast, and you'll get oil coming out the fill hole. You may think you've filled it up, because it's leaking out the hole, but it just hasn't had time to settle in. So it's best to fill that last bit slowly, giving the thick oil time to settle and eventually leak out the fill hole. Overfilling can happen when you install the fill plug to keep from making a mess, and you jam the plug on before the excess oil has a chance to drain out the hole.

Slow and easy is the way to go.

Tim
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[Frodge]

Is there any evidence, or is there anyone on here who has changed their hypoid oil and developed a leak at one of the seals? That is my main concern. I don't want to be pulling the motor and trans.

[calvinater]

Thats what she said
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