"What I've read is that the clutched pulleys can fail
catastrophically," That is what bothers me. The existing system may
rattle when the shock or the bearing are failing, but you never get
stranded. My daughter is commuting about 400 miles a week in a 30 yr
old car with 300K miles. Right n
What I've read is that the clutched pulleys can fail catastrophically, so the
belt comes off and no water pump etc. However, they do fail gracefully and
give some warning.
--
Max Dillon
Charleston SC
'87 300TD
'95 E300
___
http://www.okiebenz.com
To search
in several hundred thousand miles with OM603, I've never had a tensioner
die. The shock goes bad and it gets rattly. On 2 of 6 engines, I have
replaced the tensioner bearing. I think i have replaced 2 or 3
shocks. It is a minor service item. These cars were 300k to over 400k,
except the F
> On December 6, 2017 at 7:07 PM Fred Moir via Mercedes
> wrote:
>
>
> Mitch.
>
> Um, water pump driven by belt?
>
If the belt tensioner dies, you lose your alternator, power steering, water
pump and AC.
If the alternator one way clutch that you bought to extend the life of the belt
tens
Understood. “Running backwards” was an oversimplification on my part. More
like allowing the accessory drive to deal with the amplitude of the pulses that
occur due to slowing and speeding of the crank.
Thanks!
-D
> On Dec 6, 2017, at 7:11 PM, Craig via Mercedes wrote:
>
> On Wed, 6 Dec 2
on behalf of Mitch Haley via
Mercedes
Sent: 06 December 2017 18:49
To: Mercedes Discussion List
Cc: Mitch Haley
Subject: Re: [MBZ] Rattle rattle rattle under the hood
> On December 6, 2017 at 4:48 PM Curley McLain via Mercedes
> wrote:
>
>
> ok, convince us! Personal
On Wed, 6 Dec 2017 18:51:31 -0500 Dan Penoff via Mercedes
wrote:
> So help me understand the concept:
>
> As I understand it, the clutched pulley has a one-way sprag clutch in
> it so that if the belt turns backwards it can freewheel?
No, the belt does not turn backwards, it only slows down. An
Mitch.
Um, water pump driven by belt?
Fred Moir.
Lynn MA.
Diesel preferred.
From: Mercedes on behalf of Mitch Haley via
Mercedes
Sent: 06 December 2017 18:49
To: Mercedes Discussion List
Cc: Mitch Haley
Subject: Re: [MBZ] Rattle rattle rattle under the hood
I think your opinion of the clutch is pessimistic. Failure mode for those is
probably about the same as the alternator. In fact when I replaced the
alternator on my Jetta it appeared that the alternator was original, I love the
clutch to the new one. Sprag clutches are pretty simple and robust.
So help me understand the concept:
As I understand it, the clutched pulley has a one-way sprag clutch in it so
that if the belt turns backwards it can freewheel? As the pulses that are
induced into the accessory drives from the crank pulley (as the crank slows
down and speeds up with the pisto
> On December 6, 2017 at 4:48 PM Curley McLain via Mercedes
> wrote:
>
>
> ok, convince us! Personally i don't mind replacing the little shock
> every 5 yrs or so, as it is easy to change. To me that is better than
> adding a pulley that only lasts a couple years and can leave you
>
May take years. Don't forget the tensioner pulley / lever assembly that wears
out along with the little shock.
I've had a dual circuit steering / ASD pump fail with a broken mount, Larry
recently had the same failure with a normal power steering pump. This change
may also reduce the frequency
ok, convince us! Personally i don't mind replacing the little shock
every 5 yrs or so, as it is easy to change. To me that is better than
adding a pulley that only lasts a couple years and can leave you
F.O.R.D. Even if you add in a belt every 4 yrs or so, it is still more
reliable in t
Yesterday the Ina clutch alternator pulley arrived, the tool arrived Monday, so
maybe this weekend I can install. The outside diameter of the pulley wheel is
the same as my stock alternator, so I don't need a different serpentine belt.
I'm planning to make before / after videos to demonstrate t
Here's the thread that taught me about these:
http://www.peachparts.com/shopforum/diesel-discussion/365376-alternator-pulleys-101-clutch-type-one-way-pulleys-2.html
The major downsides include expense, requirement for more tools, and the
clutched pulley can fail catastrophically and leave you str
You're overthinking it, it's just a one way clutch.
Curt
Sent from Yahoo Mail on Android
On Tue, Nov 28, 2017 at 8:27 AM, Dan Penoff via
Mercedes wrote: I understand the frugality aspect, but
since the bushings aren’t available as a separate part it just seems silly to
spend time trying
Check the diameter of a TDI pulley, they're clutched. Actually a 120A TDI
alternator might be a worthy upgrade...
Curt
Sent from Yahoo Mail on Android
On Tue, Nov 28, 2017 at 7:37 AM, Meade Dillon via
Mercedes wrote: 124.193 OM603: The serpentine belt
tension device shock rubber bushing
There is an updated design on the shock that is supposed to last a lot longer.
Sent from my iPhone
> On Nov 28, 2017, at 6:37 AM, Meade Dillon via Mercedes
> wrote:
>
> 124.193 OM603: The serpentine belt tension device shock rubber bushing is
> loose around the stud going into the head. Methi
I understand the frugality aspect, but since the bushings aren’t available as a
separate part it just seems silly to spend time trying to re-engineer something
this simple.
I’ve heard of the alternator clutches, but what would you use to control it?
-D
> On Nov 28, 2017, at 7:56 AM, Meade Dil
If I could just replace the rubber part, which should only cost a dollar or
two, I'd do that. I probably will end up getting the new shock, and I also
plan to replace the alternator pulley with a clutched version.
-
Max
Charleston SC
On Tue, Nov 28, 2017 at 7:45 AM, Dan Penoff via Me
The whole shock is a whopping $31.00 from most suppliers. Why would you spend
2-3 times that in effort to replace it? It takes all of maybe 20 minutes to
swap, if that.
-D
> On Nov 28, 2017, at 7:37 AM, Meade Dillon via Mercedes
> wrote:
>
> 124.193 OM603: The serpentine belt tension de
124.193 OM603: The serpentine belt tension device shock rubber bushing is
loose around the stud going into the head. Methinks that rubber is dead,
and it would be a shame to purchase the whole shock absorber just to fix
that bit of rubber.
I'm considering the installation of a clutched pulley on
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