Gearbox Oil Filler

[hvanman]

I've had a search of the technical section but not had any luck.... I need to fill my gearbox after major strip down, but can't see the filler hole that the Haynes manual shows. My car is a 1992 and I know they made changes to the filler/drain, but can't work out how to refill the box?

Thanks, Simon

[Discoil]

Use a thinwall socket 19mm or 3/4 in af and it is approx at ( as per clock ) 25 mins to the right , of the 5th gear cover plate

might be 17mm as it's been a long time since I did ours

I've edited my post due to the picture below

[mat_fenwick]

Level plug here:



I've heard it suggested that it may be easier to fill via the breather plug on top, until it dribbles out of the level hole. I don't find it too much of an issue using a small squeezy bottle via the level hole though.

[hvanman]

Thanks guys, I will give it a go tomorrow....

[citronut]

with the car on level ground, level bung removed, drip tray under level bung and fill through the vent bung on top of the gear box just along side the bottom edge of the battery, this is 17mm so a long half inch drive extension to remove and re/fit,

regards malcolm

[electrokid]

BUMP !

Mat - any chance of refreshing the photo or re-posting - just to confirm what the gearbox filler looks like - thanks.

[mat_fenwick]

Done! I re-organised my Photobucket files a while back, as the new version of the site no longer comes up with the warning that your links won't work after changing file location, so I assumed they'd still be OK. Obviously not...

[electrokid]

Brilliant thanks for that Mat - much appreciated.

That looks like a wheel-off job so I'm fairly sure I've found the...

I've heard it suggested that it may be easier to fill via the breather plug on top,

breather plug on top - if I'm right a 17mm ish plug with a small bore section in the middle with a little plastic plug in bit which pulls out easily.

And there's a fair amount of oil around that end of the engine and gearbox which I had been presuming had come from the top end but I now think because of the 'spray pattern' and the slight scent of PSA gearbox oil (which I'm now familiar with for the first time having bought a couple of litres the other day).

Thinking now that I'm very short of gearbox oil I see no harm to be done by undoing the breather plug and stuffing half a litre in to see what that does for the whiney noises

[Birotor]

If you've done a 'major strip' trust you checked the tightness of the over hung 5th gear wheels which were known in period for slacking off. Filling with a squeeze bottle through the level plug really is no hassle. Generally over filling gear boxes is bad news as it interferes with the spry patterns which are as they should be WHEN THE LEVEL IS SET CORRECTLY don't bung in extra for luck!

[electrokid]

Thanks for that Eoin. I'm at the stage of trying to find out more about whatever is going wrong so the car is parked up waiting for my local Citroen expert to get back from his Christmas break.

I'm pretty sure that much has leaked out of the NS driveshaft seal - having chatted with a local gearbox expert, the whining I have may just be due to very low oil level or something more serious such as the 3rd/4th synchro assembly. IIRC the gearbox should have 2 litres of oil in it and I would guess that I'm around a litre down judging by the mess around that end of the engine. The gearbox expert reckons that it takes around 12 miles of driving to get oil around all parts of the gearbox so I'll take a gently gently approach to filling.

[electrokid]

Well that worked

I put in 300ml and took it for about a 5 mile drive during which the whine in 2nd and 3rd disappeared altogether leaving a slight whine in 4th.

Next time I need to use the car I'll put some more oil in but this time mixed with a rubber expanding additive to do a temporary fix on the seals - and see how much noise I get as well.

[citronut]

what spec oil did you use Brian, as the only oil you should use in a PSA gear box is BV 70/80 spec,

also the easiest way to fill the box is through the breather on top of the box just by the battery tra, its a 17mm plastic hex,

remove the hole breather not just the push in cap/center

regards malcolm

[electrokid]

Yes Malcolm it was the proper 75/80 oil specifically for PSA gearboxes surprisingly avaiable from Halfords ! And I found the 17mm plastic breather ok - I haven't got anywhere decent to work on cars so I really didn't fancy scrabbling down in the mud to get at the proper filler.

When I next use the car I'll top up with 700ml of 75/80 plus some Re-seal as a temporary measure which will swell any rubber gaskets and hopefully reduce the outflow. I'll probably get Andy (my local Citroen guy) to have a look and assess what needs to be done - it may just need oil seals or they may have gone for another reason. The lack of oil may have damaged the box and it may need replacement. At least finding out that the oil level was low has given me a bit of breathing space.

[Vanny]

As a side note, when i was putting my car back together this time last year, I found the cheapest place for a branded 75/80 oil was actually from the main stealer, and that was before getting discount on it!

[citronut]

you do know if you over fill the gear box you risk contaminating the clutch with gear oil,

i always fill through the breather, but with the level bung removed and with a tray below,unless the box has been fully drained, then just re/fill with the correct quantaty ( no need to remove level bung in this case ),

regards malcolm