Which oils and where and when :

Silicone brake fluid DOT 5, how and what ?

Info about disassembly & assembly of the front axle bearings.

Important tightening data:

Over the years, all the rubbers of the gearbox controls and of the gear lever wear out.

That a cardan axle (= drive shaft)should have no play seems logical to me.

Central locking W463; text is intended for explanation and troubleshooting of central heating problems.

Wiring diagram for the diesel version 1979 and 1980,

so:

the model with the small headlight switch,