Jeff Liebermann wrote in message
...
On Mon, 19 Mar 2012 16:52:16 -0000, "N_Cook"
wrote:
12V, .2A, seized up due to the grease , cleaned it all out and runs fine
but
what , if any, grease to replace it with?
Simple sleeve bearing .
It's not grease, it's oil. The reason it seems thick is that pieces
of plastic or rubber shavings have conaminated the oil.
I use whatever thin oil I happen to find on the shelf. It's not a
critical application. If you want quality, get some PTFE or silicone
lube that can handle high temperatures. Do NOT use 3-in-one oil,
which is a vegetable lube and will turn to tar if hot.
The real trick to fixing the fan is push the rotor in and out like a
piston to dislodge any accumulated crud in the bushing. However, if
the rotor seems to wobble after oiling, it's probably too far gone to
save.
Marginal, but interesting:
http://www.noisy-computer-fans.co.uk/
--
# Jeff Liebermann 150 Felker St #D Santa Cruz CA 95060
# 831-336-2558
# http://802.11junk.com
# http://www.LearnByDestroying.com AE6KS
I will give a dab of molybdenum grease a go, as I have a tub of it, intended
for military use. Although called grease it looks more like oil and migrates
everywhere, including uphill , and is certainly high temperature
formulation. No sign of wear or wobble