[diesel_mercedes] Heater Fans Replacement [1 Attachment]

 
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The Mercedes heater fans tend to wear out their brushes after a few decades , they are not designed to be serviceable but The Mercedes Source in Bellingham , Wa. has a nifty $10 +/- kit that includes new brushes plus a how to DIY booklet for the adventurous DIY'er .

Very helpful for the budget minded W-123 & W-126 owner .

I tried it and it worked fine although the commutator was severely worn so it has been bothering me ever since ~ I don't like temporary nor half assed repairs but the blower motor until recently (about  a year ago) was $1,500 from Mercedes or $500 aftermarket and some aftermarket parts are pure garbage .

When Uro (brand) dropped their price to $100 , I bought one and stashed it away , luckily this ONE TIME I remembered where .

The AC blower in my European Spec. 300TD died so I decided to shuffle blowers around my fleet  a bit :

The new Uro blower went into my beloved 1984 Diesel Sports Coupe and the old blower that worked fine with it's new brushes , went into my Euro. Wagon .

The new Uro blower is slightly re designed and seems to work just fine although it makes that electric motor whining sound so common in the 1940's .

It also makes more air noise on high but , it works and I usually leave it on low most of the year .

The Wagon's blower had quit some time ago and only worked on high , this being the usual indication of worn out brushes .

It also vibrated severely on high , the attached picture shows why : it had some old nuts in the squirrel cage ~ I can find no other evidence of rodents anywhere so who knows how this happened .

I may well take  it apart and install a brush kit *if* the commutator is in good shape .

FWIW , just having the blower work as it did when new , moves a rather large quantity of air  , silently ~ this is a very good thing in a vehicle without vent wings .

-Nate

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