Re: [MBZ] Engine Trouble?

[B Dike]

Loren,
   
  Thanks, I will check the key on the timing advance shaft.  I suspect it's 
gone.
   
  Thanks
   


Bruce
82 300CD 348kmi 'His'
85 300CD 253kmi 'Hers'
75 240D 202kmi 'Donner'
77 240D 204kmi 'Blitzen' gone to a better place
74 240D 79kmi 'Orangewagen'
73 220D 'Fnu Lnu'
   
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Subject: Re: [MBZ] H2O Pump Degradation
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Some after market impellers are stamped steel - I have one on my
garage floor - replaced by an OEM type from Rusty. A weak fan clutch
can do tha same thing - forward motion of the car produces air flow -
none at a stop.

On 4/18/07, Jim Cathey <[EMAIL PROTECTED]> wrote:
> > Is it possible for an H2O pump's  pumping capacity to degrade (maybe
> > by a worn impeller) such that the car runs hot at idle but runs normal
> > operating temp when rpm is increased?
>
> Generally, yes.  But specifically the impellers on OEM mercedes
> pumps are so thick that it's highly unlikely.  A leaky bypass
> seat (housing or thermostat at fault) could induce something
> like that too, by recirculating too much coolant when at low
> flow rates.
>
> -- Jim


-- 
OK Don, KD5NRO
Norman, OK
"Even if you're on the right track, you'll get run over if you just
sit there."
Will Rogers
'90 300D, '87 300SDL, '81 240D, '78 450SLC, '97 Ply Grand Voyager

Re: [MBZ] Engine Trouble?

[Peter Frederick]

Yes, there is a key on the injection timer shaft.

Peter

Re: [MBZ] Engine Trouble?

[B Dike]

>Did you transfer the drive sleeve from the old pump to the new one?  
>There is a splined sleeve between the IP and the injection timer on the 
>615 chassis, and it may stick to either spot coming out.

>If it's not in there, the IP is not, in fact, connected to anything and 
>will not turn with the chain.

>Peter

Peter, the sleeve is in place on the splined shaft in the engine, and in fact I 
can turn it with a pair of pliers without moving the crank.

Might there be a woodruff key on the shaft that could have sheared?

Bruce 




Bruce
82 300CD 348kmi 'His'
85 300CD 253kmi 'Hers'
75 240D 202kmi 'Donner'
77 240D 204kmi 'Blitzen' gone to a better place
74 240D 79kmi 'Orangewagen'
73 220D 'Fnu Lnu'
   
-
Ahhh...imagining that irresistible "new car" smell?
 Check outnew cars at Yahoo! Autos.
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Subject: [MBZ] Elephant dung helps scientists develop new biofuel
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I tried to make this link all one piece, but not sure if I did it 
right.  Anyone, the hardest part of this is going to be getting the 
elephant to back up to the filler nozzle, I think.

--R

Re: [MBZ] Engine Trouble?

[Loren Faeth]

Someone a couple of years ago had left the IP timing pin in and 
turned the engine over, shearing a pin or key somewhere.


there is a key on the shaft that the timing advance rides on.  The 
outside of the advance is the sprocket the timing chain runs on.  The 
back side of the shaft drives the ip.


At 11:48 PM 4/17/2007, you wrote:

>> I was surprised to find that I could spin the crank even though the IP
>> was locked with the locking pin.
>
> That test may indeed show something that's broken, or it may cause
> something to break. I'd be really leery of using the IP to keep the
> crank
> from turning.

Something's not right.  If you had it far enough apart to
swap pumps you should have seen the sheared spline (or
whatever).  Could the timer have come apart internally?

-- Jim


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Loren Faeth 

Re: [MBZ] Engine Trouble?

[Peter Frederick]

Did you transfer the drive sleeve from the old pump to the new one?  
There is a splined sleeve between the IP and the injection timer on the 
615 chassis, and it may stick to either spot coming out.


If it's not in there, the IP is not, in fact, connected to anything and 
will not turn with the chain.


Peter

Re: [MBZ] Engine Trouble?

[Jim Cathey]

I was surprised to find that I could spin the crank even though the IP
was locked with the locking pin.


That test may indeed show something that's broken, or it may cause
something to break. I'd be really leery of using the IP to keep the 
crank

from turning.


Something's not right.  If you had it far enough apart to
swap pumps you should have seen the sheared spline (or
whatever).  Could the timer have come apart internally?

-- Jim