Done! Complete wiper transmission remove / rebuild / replace....wipers now operate silently and don't thump after 25K mi....found some corrosion under driver side window...led to this being a two weekend job, but done forever as far as I'm concerned...$75.00 and a sunny Memorial day afternoon vs. $750 mechanic repair - priceless...
Pics are here:
https://drive.google.com/folderview?id=0B2r80AnzSdzWek5mQ0tfQjNrTWc&usp=sharing
so glad I had access to the MB repair manual for this operation.....what they don't tell you:
0). Disconnect the battery and make sure the wiper switch is on "off" :^)
1). Getting the wiper arms off is a *bitch* - be patient - get them off w/ out cracking the windshield is advised. Getting the plastic trim covers off is the hardest part....they will come off, use a hair dryer to soften them a bit if in a cold climate....(not too hot)
2). Label the arms before you take them off unless it's already obvious to you (i.e. not me)
3). The plastic cover over the wiper motor will come off, gently...plastic is brittle...
5). The plastic trim cover plate that hides the wiper motor and linkage and windshield seal are key to fitment....they will likely be fragile and brittle...take your time.
6). When re-connecting - unit test everything - the wiper motor w/ no transmission attached, then the the motor and the linkage connected. Then bolt on the lower (pax) wiper arm and test, then the driver arm and test. Adjust to suit....mine clunked, now I know why it failed...
7). I went kind of crazy and turned this into a three day project including rust-treating the corrosion, scraping out the old body putty, grinding and sealing, vacuuming 29 years of detritus from the whole cavity, 2 coats of primer (white and grey) and then liquid beeswax (corrosion inhibitor) + resurrecting all the rubber and plastic bits with a thorough bath and cavity cleaning...
:^)
I also did a quick-n-dirty vacuum system diagnosis, using my MightyVac vacuum pump (which seems to double as a vacuum gauge)....with the booster supply line disconnected at 600 RPM I measure 15-17 Hg of vac, with engine at 1200 RPM, it's more like 20-24Hg. I went through everything in the engine compartment, it's all well sealed/connected, but will keep looking for any leaks - otherwise it's the vacuum pump (yes/no?)
cheers,
-Barton
--- In diesel_mercedes@yahoogroups.com, tom hanson <halfviking@...> wrote:
>
> best quality and availability is right here.
>
>
> Tom Hanson
> Mercedes Benz Classic Center USA
> MBUSA, LLC
> thomas.hanson@...
> 949 598-4842 direct
> 949 598-4870 fax
>
>
> ________________________________
> From: Barton Fiske <barton.fiske@...>
> To: diesel_mercedes@yahoogroups.com
> Sent: Thursday, May 23, 2013 8:19 PM
> Subject: [diesel_mercedes] 84 300SD - Sylvia update - windshield gasket and trim clip recommendations?
>
> Â
> ok, not giving up yet...local salvage yard had a new wiper carriage - sent my eldest to retrieve it as am out of town - $70 pre-paid - waiting for me
> at home...have already got the old one out and it clearly failed - however now I'm having the windshield replaced as its the orig (still has MB factory sticker) and is pitted beyond safe driving in winter glare conditions - so the AutoLite glass guy shows up to swap and says the gasket has to be replaced and which isn't covered under my insurance claim. I'll deal with that later, but do want to proceed - seeking recommendation on sourcing a new gasket and trim clips. I know there's lots of places to order from, but where will I get the best quality gasket/seal and can I even get new trim clips?Â
>
> Will spend my Mem. day weekend diagnosing the vacuum pump, but she'll be back on the road this week - thanks to all for reminding me I don't want to part with this thing just yet :-)
> ---------------------------------------Â
> Sent by ifone, tpyos happen...
> ---------------------------------------
> Barton C. Fiske
> Littleton, MA - USA
> Cell: +1-978-502-4936
>
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