Hi all,

I've been working on a BA11-K PDP-11/34 lately, and wow it sure is a noisy 
thing...

On my '11/45, the "Boxer" fans were easily disassembled via a cir-clip, and 
could then have their bearings cleaned/relubed (or worst case replaced).  Fan 
maintenance quieted down the /45 a good bit.  But these larger 6" Amphenol 
units don't look quite as easy to get in to...

Is the plastic rotor on these just a press fit?  Any tricks to getting in there 
for maintenance?  Or are these "you have what you have" and the only option if 
unsatisfied with their current performance to replace them entirely?

   cheers,
     --FritzM.



 

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