Lubricate oscillating bearings, adjust: Z 440 LTD

Hello MT friends. I recently bought a KZ 440 LTD , 1981. 30 000 km. The seller had failed with it at the HU, because of too much axial play at the rear wheel swing. Lt. his statement is said to have said a colleague of the examiner, that you can set something at the axle nut to reduce the game. That seems Spanish to me, I thought there were only plastic or bronze bushings pressed in at the recording. But that was a mistake, I Googled u 2.Question: Lt. a WHB on the Internet as PDF should there be a smear nipple, unfortunately I find at the pictured place in Real none! Can it be that it came only later? As I said, I have year 1981. Is there possibly a link from someone here to the correctly matching WHB or Rep.anl. for the model? Thank you very much. Greetings from Munich.