PDP 11 - how to lock heads in a rx01 and rx02 - seeking advice

[devin davison]

I asked for advice a while back on what to expect with moving a pdp 11, I
was told to lock the heads in the rx01 and rx02 drives. I'M getting pretty
lost in all the information about the drives, are there any good guides or
sites with lots of pictures of the drives taken from different angles apart
so i can get a better idea of what im going to be working with? Also,
people tell me getting the drives off the rails and out of the rack is a
pain, where would i find the appropriate information on how to do that? I
really don't want to take the drives out of the rack, but if it comes to
it, i would like to know how. I am scheduled to pick this stuff up in 5
days.

--Devin