RENEWING GEARBOX OIL

[nick3814]

Hi and happy new year everybody. SC is coming along champion, have all the oil tubes fitted, rigid oil pipe and new rocker cover gaskets fitted. Before I fit the new exhaust as access is easier I am now going to tackle changing the gearbox oil using some swepco bought from Bert, apparently its the mutts nuts as far as rejuvenating the feel in a 915 box (among other minor alterations), having examined the empty and fill points it strikes me as being a rather awkward job getting the new oil into the box without ending up wearing most of it, any advice and tips would be greatly recieved.

Cheers

 

[bones]

Glad to hear all is going well, whilst your under there is a plastic bushing which you might like to repair in the gearbox throttle bell-crank mechanism, it will improve the feel of the pedal, it's on the passenger side of the box if you can get to it, it's only held on with a split pin. Look for a shaft poking out of the box with ball/ socket type fixings on.
With Swepco especially in this weather put the oil in a bucket of boiling hot water or it won't flow, the best method is to buy or devise a pump to force the oil in under pressure.

 

[Bazgillie]

Nick
I found using a oil container with a filling tube on was the best way to get the oil in, most firms supply their oil in this type opf container. At the worst you could buy the cheapest container of oil that you can find just to get the container.
Baz

 

[tim court]

Nip to your local aquarium supplies shop and get some clear plastic tube about 12mm diameter then a cheapo plastic funnel that is a tight fit. Poke the funnel in the end of the tube and shove the other end via a convenient route in the fill hole. Hopefully you can pour from a comfortable position and not under the car with Swepco running into your armpit..

Pour it in as fast as it will take it till you get to around the last theoretical half litre or so then pour slowly, a little at a time, watching the oil go down your nice clear pipe till it starts to run out the fill point. Hopefully you only lose a minimal amount in the tube and if your really tight you could have borrowed a nice clean saucepan to catch even that!

Assuming you put back in the drainplug you should have a nicely filled gearbox, or if not, about 4 litres over your garage floor. Replace the fill plug and off you go for a test drive, neatly snicking each gear into place, leaving the saucepan on the garage floor for your dearly beloved to find. This usually is a major problem for some unknown reasoning??? (women eh!).

To avoid this do remember to put the saucepan back before she finds out. And don't forget to flatly deny that future helpings of carrots/cauli/brussels taste funny to you.............

 

[nathan 1981 930 G50]

I just use a old fashioned oil can with a flexible spout. You pump the trigger with your thumb and you have to fill it up many times.
You won't get muck into your gearbox if you are careful.

http://www.toolstation.com/index.html?r=a&feature=82913&rr=0J87thq86xMBx60c

 

[bones]

The 'Sealey' brand is very popular and available on Ebay for very little money, invaluable for just these sort of jobs

 

[vitesse]

Machine mart do a steel syringe complete with plastic tube;holds a litre of oil;I find mine very useful.Can be used for many things,enema's for example.

 

[nick3814]

Thanks for all the suggestions, in the end I managed to do it with a small plastic jug and a small flexible funnel, just putting in 1/2 a litre at a time.

Cheers

 

[dugsud]

Just out of interest Nick, did the Swepco make a noticeable difference?

 

[nick3814]

I will let you know, car still off the road at present, in the middle of 101 different jobs. Will be back on the road by March, gearbox wasn't to bad in the first place but second was always a bit of a notchy bugger at times, I intend on checking the adjustment in the shift mecanism aswell, make sure its all as it should be.

 

[dugsud]

Don't forget the bushes at the lever end......cheap & easy to change []

 

[nick3814]

Doug, struggling to find info on these bushes you mention, where have you seen them and how cheap are they? I know my gear stick is quite loose side to side as if the spring is weak, is this all the same part??

Cheers

 

[Guest]

Buy them from Porsche if you need them, they are cheap, thread here about it.

The lever will move around between 1 and 4 regardless, it's only sprung (if you want to call it that) on the 5+R plane. Take the boot off the gearlever and you will see what's going on down there...sort of...

Keep up the good work mate []

 

[dugsud]

ORIGINAL: nick3814

Doug, struggling to find info on these bushes you mention, where have you seen them and how cheap are they? I know my gear stick is quite loose side to side as if the spring is weak, is this all the same part??

Cheers

Hi Nick
As John says the bushes are located at the bottom of the gear lever but you'll have to remove the console to get at the gear lever tower.
I got my bush kit from here and it's called "911 Shift Bush Kit 1969-86"
The bushes look like this:

 

[nick3814]

Thanks a lot Doug, another job to add to the list.

Cheers

 

[bones]

I was talking about the throttle linkage bush on the gearbox bell-crank.

 

[Guest]

Hi Guys, how often should the gearbox oil be changed......Tom (1979 SC)

 

[Signor]

Greetings
My wife and I had a moment of togetherness when we changed the oil in my gearbox, one saturday evening. There I am under the motor holding the pipe into the little filler hole while my missus was filling the funnel at the other end, four feet away. To get a reasonable angle on the pipe I had to thread it through the suspension bits, but it worked. And, yes you do end up wearing the overspill of oil.[]
But unfortunately it didn't make as much difference as I had hoped.[] Maybe now it's new bushes time or probably the inevitable rebuild. After 133k what do I expect? Mind you I'm a dab hand at double de-clutching now and when I drive a "modern" car its toooo easy..........kiddy gear changing. Thats what I call it.
At least I now "know" that I've got SWEPCO splashing about my little gears and keeping them nice and slippery.[]
Good luck.
Alex