Re: [Chrysler300] a/c compressor/bearing

[Keith Boonstra <kboonstra@xxxxxxxxxxxx>]

Marshall,

If the bearing seizes won't things act the same as if the clutch were 
energized? And then would not the compressor crank be rotated by the 
pulley the same as if the A/C were turned on? If that is correct, the 
compressor and pulley would turn as one, and the belts would not burn off.

If the pulley and compressor cannot be turned by hand without the belts 
in place, I believe the compressor must be shot too. It would seem to me 
that the compressor itself may have previously seized, but that it 
remained undiscovered until the bearing also froze up. And that locked 
the entire assembly up so as to burn the belts off.

N'est-ce pas?

Keith Boonstra

-
On 4/1/2013 2:57 PM, Marshall Larson wrote:
>
> As you may have determined there is a large bearing inside the pulley that
> is in use 100% of the time the engine is running and belts are in place.
> it is not an idler as it performs no belt tightening function. The bearing
> is mounted onto the snout of the conpressor housing. The clutch disk is
> mounted to the crankshaft of the compressor and is forced to turn only
> when a current is passed throught the clutch coil. No current, no clutdh
> engagement, no compressor function.
>
> The pulley is driven by the belts and will turn with very little 
> Resistance
> when the engine is running. If it does not turn with the belts or you
> can't turn it by hand when the belts are removed, it's bearing has seized
> and must be replaced.
>
> The pulley and it's integral bearing are a friction fit to the 
> compressor's
> snout and are held in place by a C clip at the center of the inner bearing
> race. Remove the pulley assembly, press out the bad bearing, press in a
> new bearing and reassemble to the compressor. Reassemble the clutch disk
> and it's key to the compressor shaft. Use the nut or the bolt to move the
> clutch toward the face of the pulley carefully as there must be an air gap
> between the clutch disk and the face of the pulley when properly
> reassembled. The two surfaces will never touch until a current is
> introduced to the coil. Find the specification for the air gap and be
> careful to not deflect the disk while setting it. The specification will
> likely be in the .004 to .010 range.
>
> _,_.___
> >
> > <jsnowosacki@xxxxxxxxx 
> <mailto:jsnowosacki%40gmail.com>?subject=Re%3A%20a%2Fc%20compressor%2Fbearing>
> > <Chrysler300@xxxxxxxxxxxxxxx 
> <mailto:Chrysler300%40yahoogroups.com>?subject=Re%3A%20a%2Fc%20compressor%2Fbearing> 
> S
> >
> >
> >
>
> -- 
> *Marshall Larson*
>
> [Non-text portions of this message have been removed]
>
> 



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