Wild T2 Theodolite Teardown

Good day. I have several T2/T16 theodolites that have been in storage since the 1990s when they were retired from service. Last week I was checking on their conditions and some have stuck or sticky telescopes. Unfortunately, there seems to be no one still offering cleaning for these units in my area. I want to lube them before putting them back into storage again so as to not worsen their conditions. There are very few videos on YT regarding repair and calibration of these theodolites. Does any of you know of such videos or manuals that show step by step procedures to open and lube the moving parts?