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Has anyone installed the reverse backup switch? I have been looking all over the transmission trying to find where it installs and the only bolt that I can find that is big enough is where you fill the transmission! I was told it is above the shaft, but I still don't see it.

right above the trans output flange is a 17mm plug, pull that and you will see a plunger. (see picture)

You may have to cut the tail off the plunger to make it work, or if you have a new style one with a recess, just pull the old one out and replace with new one

I confirm - I had to cut the "tail" with a dremel tool.
BTW, being afraid of risk of dropping the plunger into the gearbox, I put the reverse gear before undoing the screw plug.

Ugo
1977 710K
1990 716K
Torino, Italy

Do I have to buy the switch from magna steyr or is it commonly available in the market? I have seen it in the spare parts catalogue with nr 7111850750, Kostal 8860; was it installed also in other cars?
Thanks

I am sure there are several alternatives.
I bought a Fiat Iveco spare part ... small Iveco vans and trucks have a ZF transmission, and presumably ZF use a standardized switch (and thread) on gearboxes they produce.

Ugo

Thanks Ugo, your help is always useful!
gunipinzmutt

Readily available switch. Check with the Unimog dealers, same switch as used on the Clauss overdrives....whole lot better price.

Cheers,

Scott

Hi there;

Here are the parts number:

7161225391 Kontaktbolzen ATS 24.2 (little connecting shaft)
7161850320 Rückfahrschalter ATS 666.4 (reverse switch)
7162850330 Anschlusssatz ATS 186.9 (Reverse switch cover with wires)






Best Regards

Jacques

... here a few more pictures:






Good Luck

Jacques