How many nuts on the brake booster? - Mercedes-Benz Forum
 
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post #1 of 4 (permalink) Old 06-24-2019, 06:14 PM Thread Starter
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How many nuts on the brake booster?

I'm trying to remove the brake booster from my '76 450SL

I have removed the three visible nuts...but the booster still seems pretty firmly attached.

The fourth stud doesn't appear to be accessible, and according to this link at FCP only three of the four studs will have nuts on.

At this point I'm not sure if the booster is just 'stuck' to the firewall (and can be moved with a quick poke with the pry bar!), or whether there's another nut on there...don't want to damage anything, so thought I'd ask...

Update: Answering my own question. There are 4 nuts on there. The fourth one is buried behind the cruise control amplifier. Note to self: Should have replace the brake booster while the dash was out....

-Steve


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post #2 of 4 (permalink) Old 06-25-2019, 04:46 AM
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Sounds like you found the answer. I recall using long extensions for some and smaller up close tools for others.


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post #3 of 4 (permalink) Old 06-25-2019, 04:55 AM Thread Starter
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[QUOTE=Fonzi;17823858]Sounds like you found the answer. I recall using long extensions for some and smaller up close tools for others.

Three of the four nuts are easy (if you ignore the lying on your back in a 85'F garage part of 'easy') - regular gearwrench or open ended freed them up, and then you can spin them off by hand.

The fourth is a b****h to get at. I removed the 10mm holding the cruise amplifier in place, and dropped that down with the bracket, then used a long extension. Not looking forward to putting it back...

Hope this info helps someone. My guess is that the car FCP described in the link above had the booster replaced in the past, and someone just didn't bother putting the 4th nut back on...I can see why.

-Steve


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post #4 of 4 (permalink) Old 06-25-2019, 05:54 AM
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I could not get that one back on. Later someone posted it could be accessed by pulling a grommet on the firewall. I think this is it.
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