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

[devin davison]

I made a mistake. I was reading about the floppy drive and accidentally
mentioned the rx01 / rx02. The hardware to be moved is actually RL01/RL02
hard drives, not the floppy drive. Please forgive the mix up, any help is
appreciated.

On Fri, Jul 10, 2015 at 3:31 PM, Matt Patoray <mspproductions at gmail.com>
wrote:

> The RA60 is my least favorite drive to move. The thought of disassembling
> it crossed my mind but since it was being slid into a rack with a shelf and
> not on rails it would not have helped much, so just picked it up, carried
> it over and shoved it in.
>
> On Fri, Jul 10, 2015 at 3:22 PM, tony duell <ard at p850ug1.demon.co.uk>
> wrote:
>
> >
> > >     > From: tony duell
> > >
> > >     > I find [RL0x's] easier than RK05s
> >
> > > Try taking out an RA81!
> >
> > I did an R80 (not much lighter) single-handedly.
> >
> > The trick with those is to take the HDA out. It takes only a few minutes.
> > Raise
> > the logic chassis (top part of the case including the front panel), then
> > lock the
> > heads (you MUST do this anyway), release the belt tension (lever at the
> > front
> > right), then unplug 3 cables (2 small ones on the front of the HDA and a
> > 40 way
> > ribbon from the PCB on top), take off the 4 mouting nuts and lift the HDA
> > up and
> > out. Then tape the spindle pulley so it doesn't turn when moving the
> unit.
> > If it turns
> > backwards it is likely to damage the heads.
> >
> > The rest of the drive (chassis, PSU, motor, logic PCBs) is just about
> > liftable fully
> > assembled.
> >
> > I think the worst is the RA60. It's very heavy and it is a pain to
> > dismantle. You have to take it
> > apart a little bit at a time.
> >
> > -tony
> >
>
>
>
> --
> Matt Patoray
> Owner, MSP Productions
> (330)542-3698
> mspproductions at gmail.com
> KD8AMG Amateur Radio Call Sign
>