wrote in message
oups.com...
This is a lubrication problem. The old grease and oil has gotten
sticky. Flush out the gripper housing, where the trunion pistons go in
and out, with WD-40. use caution, cover the records, WD-40 will burn
holes in them. Let the mech go tnrough it's motions, adding more WD-40
as it runs. After a few cycles it will smooth out and work properly.
Squirt some between the gears to flush out any old grease binding
there. Rarely do you need to dis-assemble the mech to clear this
problem. Afterwards, if you want to re-lube the mech, I reccomend a
synthetic oil, like Mobil 1, they won't turn to varnish when they get
old.
Charlie Maier


I would have tried WD40 but didn't have any with me.
The main fault that I was asked to sort out was the owner realised that the
deck motor suspension grommets were perished.
He first tried removing the whole deck drive sub chassis but failed ,
reassembled and just removed the motor and replaced the grommets.
Unfortunately he had twisted something along the way , the mechanism
seriously jammed and he gave up on it for some years.
He (using levers) or the mechanism had managed to bend the the deck
chassis sublate so the extended angle plate/latch
from the disc-centre lifter was twisted. This latch then could fall and
catch at the end of the plate with the long slot so jamming things good and
proper. Also twisting the angle plate at the double cogs drive that connects
via long rod to the stylus brush arm etc. .
Straightened things out and reassembled and that all works fine.
I'll tell him to squirt WD40 in the double cogs area lifter/rotator gearing
and hopefully will be fully working mechanism then.

--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/