Re: Bridgeport boss 4 Spindle not powering up


<jakdog@xxxxxxxxx> wrote in message
news:1139452036.237994.170270@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
I have a 1984 Bridgeport Boss 4 three axis that has been sitting idle
in storage for 2 years. I just pulled it out and tried to put it
through it's motions and the spindle won't power up. I know the trick
about making sure it has spindle oil so I don't think it's that. The
axis' move fine, everything else powers up. when you try to turn on
the spindle you hear a buzz from the electrical box.

any clues?

Thanks in advance


First, suggest call in a tech--but in case your savvy and fairly
electrically inclined, ( or know someone that can help you who is ), then
I'll offer the following :

Smashed spider guts, mud wasp nest or somesuch in the mag contactor perhaps.

Also iron filings/ dirt in the contactor will sometimes cause problems.

A voltmeter placed in parralel with the contacts show the voltage drop under
load.

The usual disclaimers apply, and so if you think your maybe not sure your up
to it then you definately arent....

--

SVL


.

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