Technical Another Ducato '95 Gearbox puzzle

[Finkey]

I changed my CV Boots and lost a little gearbox oil in the process so decided to put some back in.

Several days scouting around the internet came up with:-

"They've removed the dipstick fill it through the reversing switch hole or the breather hole."

Well I can't find a breather hole and reckon I don't have one.

The reversing switch is beyond my reach.
Can't even touch it with the tips of my fingers let alone unplug and unscrew (The perils of an A class motorhome I guess.)

During my reading I saw mention of a level plug somewhere on the gearbox and using an oil can to put oil in.
The bolt in the picture looked a likely prospect.
I procrastinated for a day or so then in fear and trepidation unscrewed the bolt.
Panic, It's obviously not a level plug.
However I continued on my chosen path,squired the oil in and replaced the bolt.

Result: All the gears seem to work (5 speed box)

Any body know what that bolt does?

Doesn't appear on any pics I can find
Cheers,

 

[bugsymike]

I changed my CV Boots and lost a little gearbox oil in the process so decided to put some back in.

Several days scouting around the internet came up with:-

"They've removed the dipstick fill it through the reversing switch hole or the breather hole."

Well I can't find a breather hole and reckon I don't have one.

The reversing switch is beyond my reach.
Can't even touch it with the tips of my fingers let alone unplug and unscrew (The perils of an A class motorhome I guess.)

During my reading I saw mention of a level plug somewhere on the gearbox and using an oil can to put oil in.
The bolt in the picture looked a likely prospect.
I procrastinated for a day or so then in fear and trepidation unscrewed the bolt.
Panic, It's obviously not a level plug.
However I continued on my chosen path,squired the oil in and replaced the bolt.

Result: All the gears seem to work (5 speed box)

Any body know what that bolt does?

Doesn't appear on any pics I can find
Cheers,

I am always a bit wary about undoing odd bolts on outside of gearboxes unless sure what they do, as some have balls and springs behind that for the selectors etc.
With gearboxes that have no obvious filler, in the past when on a garage ramp I have removed the speedo drive via a 10/11mm bolt and topped up enough to cover the gear drive on speedo. However don't let gear drive drop down into box
It looks like a French Peugeot/RenaultCitroen design gearbox from memory. Some had a filler/level on the diff housing with a square drive, if so at bottom of gearbox/diff you should see a matching drain plug.