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  #1  
Old 06-20-2006, 03:40 PM
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Valve adjustment: turning the motor

300D 1985


What is the size of the crankshaft bolt so I can buy the right socket so I can turn the motor ?

Also what size wrench do I need to remove the injectors ?
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  #2  
Old 06-20-2006, 03:42 PM
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Size...

Quote:
Originally Posted by jfman
300D 1985 What is the size of the crankshaft bolt so I can buy the right socket so I can turn the motor ? Also what size wrench do I need to remove the injectors ?
I believe it is 27mm DEEP socket that you need for both - but wait for confirmation from others on that (though I'm fairly certain that's it)...

MF
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  #3  
Old 06-20-2006, 04:12 PM
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Quote:
Originally Posted by MercFan
I believe it is 27mm DEEP socket that you need for both - but wait for confirmation from others on that (though I'm fairly certain that's it)...

MF
That is correct. And the Hazet socket works the best, as it has relief to clear the injector return barbs. But a standard 27mm deep well works.
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  #4  
Old 06-20-2006, 04:13 PM
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I also think it is the 27 mm deep socket.. the Sears thin wall works nice...
but what is a Valave ?
LOL
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  #5  
Old 06-20-2006, 04:30 PM
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Sorry typing with oily hands.

Thank you guyz.
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  #6  
Old 06-20-2006, 05:40 PM
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All valvea adjusted.

2 were in spec
2 were too loose
the 6 other ones I could not fit the feeler guages.

From the looks of the 14mm nuts they looked like they had never been adjusted.
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1991 mustang notch (project)
1970 chevelle (project)
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  #7  
Old 06-20-2006, 05:45 PM
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I prefer the handheld starter to bump it over... I use it for the SD and the BMWs.
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I'm not a doctor, but I'll have a look.

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Old 06-20-2006, 05:49 PM
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Hand held starter...

Quote:
Originally Posted by Hit Man X
I prefer the handheld starter to bump it over... I use it for the SD and the BMWs.
Where did you get that hh starter - reasonably priced?!
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Old 06-20-2006, 05:52 PM
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Quote:
Originally Posted by MercFan
Where did you get that hh starter - reasonably priced?!


$15 maybe? Actron I believe is the brand. Either from AutoZoo or Pimp Boyz, it's a great little device.

All it does is activate the solenoid. But no hunching over to turn the motor over manually with the crank.
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I'm not a doctor, but I'll have a look.

'85 300SD 245k
'87 300SDL 251k
'90 300SEL 326k

Six others from BMW, GM, and Ford.

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[/IMG]
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  #10  
Old 06-20-2006, 06:24 PM
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With a car ' new to you' I would start the car up after the valve setting just to see how it sounds.... it is safer to only do one thing at a time and see that you are back to ' neutral' .... otherwise you can wind up not knowing which action you took which needs correcting...
Sure glad you caught those tight ones and hope that did not cause any damage..once an exhaust valve does not seat well on the head the excess heat can damage it very quickly...
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  #11  
Old 06-20-2006, 06:31 PM
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Well I am guessing at this point that the valves have never been adjusted. The car has 180k miles.

Think it's possible that the head is damaged?
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2000 E39 M5
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  #12  
Old 06-21-2006, 05:16 PM
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Quote:
Originally Posted by jfman
300D 1985


What is the size of the crankshaft bolt so I can buy the right socket so I can turn the motor ?

Also what size wrench do I need to remove the injectors ?
I found using a 22 mm combination wrench to turn the power steering pump and thence the engine to be the easiest way to do this when adjusting the valves.
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  #13  
Old 06-21-2006, 05:45 PM
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"I found using a 22 mm combination wrench to turn the power steering pump and thence the engine "

A very bad idea... and there are lots of theads which have the discussion about this...

1. The MB Factory Shop manual SPECIFICALLY SAYS NOT TO DO THAT !!
2. The reason it the shaft on the power steering pump is a taper.. so that excess tightening forces that junction together...

Use the crank bolt if you are smart... the rest of you.... I hope you don't ever have to take that pulley off to service the power steering pump....
I helped TCane when the PO had done that... not fun... and you risk damaging the pump in the process....
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  #14  
Old 06-21-2006, 06:53 PM
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[QUOTE=leathermang]"
A very bad idea... and there are lots of theads which have the discussion about this...


2. The reason it the shaft on the power steering pump is a taper.. so that excess tightening forces that junction together...

Greg...An impact wrench is a great "equalizer"
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  #15  
Old 06-21-2006, 07:12 PM
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LOL, Stevo, it is not the nut... but the tapered hole pulley which is the problem once it has been TORQUED down too much...
Two of us with a big vise and heating it with oxy-acet and took three heats and lots of heavy hitting...
A true Interference fit once you Crank ( pun ) it down...
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