On Tue, 25 Feb 2014, Marc Howard wrote:
Number two spins up but the initial seek emits a
sickening "klang" as the
voice coil drives hard to the limit (yes, the graticule lamp is working).
Check the "Cylinder Address and Difference" board. Most likely it is
The third drive initially had really ugly heads that
never cleaned up to my
liking. I loaded a disk anyway and for about 5 seconds after the initial
head load all was okay. Then I heard the sound of the top head scouring
How did you clean the head? Usually, with enough patience (can be half an
hour or more), you'll get them clean anyway.
1. How hard is it to mount the head in the tongue?
Looks like just 2
I'd say practically impossible. At least I've never heard of someone doing
this in the field.
2. How hard is it to remove/replace the tongue
assembly? Looks like it
mounts with a couple of allen screws.
3. How hard is it to align the heads? I don't
have a CE pack so I'll just
have to use a pack that works okay on the other drive.
You'll definitely need a scope and the maintenance manual. Without scope,
you won't find the center of a track.