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  #1  
Old 12-25-2002, 07:19 AM
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Join Date: May 1999
Location: Toronto,On,Canada
Posts: 281
Unhappy Blower motor 300E,which one to get with or without cage?

The blower fan for warm air seems to make a revolving sound,especially over bumps and afterwards.
Sometimes,it can be stopped with varying fan speed from auto to slow or vice versa.Or temporarily switching it off.
Is it on its last leg?
The air cond is long gone,suspect evaporator under dash.Costly to repair therefore no repair 2 years.
RE:
The blower fan,which one should I get,without cage Bosch 90 $ is much cheaper.The Behr is 250 $ with 'squirrel cage'.
If I choose to repair the air cond and replace the blower at the same time,would it be any add. cost to the 10 hours labour I was quoted for replacing the evaporator alone?

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  #2  
Old 12-25-2002, 09:43 AM
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Join Date: Mar 2000
Location: Gainesville FL
Posts: 6,844
Ten hours is a great deal and should cover the blower also, as everything has to come out and apart.

As to the motor with or without cage; when assembled the end result is the same: a new bosch motor with the same expected lifespan. The difference is the money and the job. Replacing the cages is one of those things that requires technique for at least two major reasons. The first is that the motors have permanent ceramic magnets within. They dislocate and break quite readily under impact; thus NO tapping of the cage onto shaft ... ask how I know this! Secondly, the cages have to be in the exact place so as not to hit the surroundings and in the same light they must not get out of shape or balance as then they will makes some real unpleasant noises.

We always use the motors without cages, saves our customers enough for at least an oil change, but we have had to redo 10% of them over the years do to the second reason. The first one I did, I ruined for the first reason and it has happened at least one more time to one of our techs. As a result we charge for both the labor to recage and the risk.
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Continental Imports
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  #3  
Old 12-25-2002, 08:09 PM
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Join Date: Apr 2000
Location: Falls Church, VA
Posts: 5,318
That is an amazing quote for the evaporator - like 40% less than what you usually see, so I hope the guy knows what he's getting into.

There are also some climate control "vacuum elements" that get replaced when everything is opened up, and there are some posts on this. If you don't have heat to your footwells, you might consider replacing these.
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'66 200, '66 230SL, '96 SL500. Sold: '81 380SL, '86 300E, '72 250C, '95 C220, 3 '84 280SL's '90 420SEL, '72 280SE, '73 280C, '78 280SE, '70 280SL, '77 450SL, '85 380SL, '87 560SL, '85 380SL, '72 350SL, '96 S500 Coupe
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Old 01-08-2003, 06:08 PM
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Join Date: Dec 2002
Location: Piedmont, OK
Posts: 69
Swapping squirrel cages.

So how exactly DO you go about swapping the squirrel cages without breaking anything? I'm especially concerned with not damaging the new, expensive motor.

Thanks!
-Jay
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  #5  
Old 01-08-2003, 06:32 PM
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Join Date: Sep 2000
Location: Sherman Oaks, CA
Posts: 4,749
I was quoted 15 hours labor to redo my evaporator. at a tune of way more than I want to spend. so I will do it myself one day.

Alon

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