I'm new to the Mercedes family and am the proud owner of a 95 E 320. Is the replacement of the heater fan with squirel cage blowers beyond the scope of the home mechanic? My 95 e320's fan is squealing (same pitch @ different fan speeds) and I would like to replace it myself. Do I need to pull the wiper assembly to do so?

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Brian

Welcome to the forum Brian! My name is Brian too! I don't have any experiance with your chassis, but someone will come along and help out. Working on any MB is easy, just take your time and be patient. The cars are made to work on. good luck!
Brian

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Brian W. Heitman

www.MBCA.org/northtexas

Join MBCA!!!

Hi Brian,

I too am new to the Mercedes family and my 95 C280 has a high piched chirp all the time. When I first got the car about a month ago, the fan started "ticking", then I had it cleaned out and it has been squealing on start up and always has a little chirp going. Need to fix it soon, before friends test my new Benz out.

I will be awaiting forum members input to see how difficult and expensive this will be.

Larry

http://mbclub.co.uk/forums/showthread.php?t=3593

I have used 2 types of lubricant on my c36 to try to quiet the fan. A creeping type of wax based lubricant was most successful. I have simply oiled the bushings on my old 190e and gained about 2 years of extra use before the squeak returned worse and I broke down and replaced the fan. The link I postd is for the 202 model. Remove the fan and work the lubricant over a couple of hours into both end bushings. Clean up any leakage/overspreay. Don't use WD40 as it will not last. It's easy mechanically to do, but twisting your body around to work under the dash is never easy. T15 is the Torx driver size you will need.

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'96 C280 (gone)
'97 C36
'05 C230k

Benzfan- Thanks for the info, but could you give me a name or specifics on the "wax based lubricant" that you used on the blower motor ?

Moly grease was dissolved in laquer thinner and then squirted on the top and lower bearings. I also replaced the motor brushes with generic starter brushes which I sanded down to exact size.

Total cost = $2.00 or so for the brushes at a local starter alternator repair shop. My labor = ?? took several hours since I was in new territory. You could search for my post (DanielW) when I did my older 87 300E (124 bodied) car. The hardest part was removing the wiper assembly and trim around windshield.

Luck to you,
DanielW

I'm about to tackle this myself (see separate post asking how to get off all the air grille stuff to access the wiper motor, and below it, the blower motor).

I've read a lot about using ATF for this purpose on the Ritter/Easley list, and I think I'll give that a try. It is reputed to be a good, long-lasting fix.

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Steve
'93 400E

on other electric motors and hobby projects. Thats because the moly is extremly slippery and does not drip out easily. The laquer thinner was just a cleaner/carrier and quickly evaporates leaving the moly grease.

luck to you
DanielW

The one I am using is called "Fluid Film" and is used as a tool coating as well as a lubricant. I didn't want to use something that would attract and hold dirt, but I honestly don't know how long it will last. The job of renewing it is very fast, however.

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'96 C280 (gone)
'97 C36
'05 C230k

Hello 400E,

Can you lead me to the thread on using ATF (automatic transmission fluid?) as a lubricant for blower motor bearings. Thanks!

Larry

Hi Larry,
I subscribe to the "other" main MB list at work. I'll take a look in their archives when I get there and try to find that reference.

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Steve
'93 400E

Larry,
I did a search on the Ritter/Easley list re: ATF and blower motor bearings and indeed there are numerous references to using a few drops of ATF on both bearings. These are mostly from Marshall Booth, a frequent contributor to that list, and the diesel technical advisor for the STAR. You could probably email him directly (I think his email is usually listed in the STAR) if you want more info on his experience.

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Steve
'93 400E