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  #1  
Old 01-15-2010, 01:45 AM
BigDeadWaltz's Avatar
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Join Date: Jan 2007
Posts: 7
Grouchy Neutral Safety Switch

So the original Neutral Safety/Reverse Light switch in my 240D bit the dust. I got a new one the other day and installed it. It works alright, but jeez is it finicky. I usually have to jiggle the shift lever a little in park and neutral to get it to gap the switch. Reverse seems to work fine. I've tried adjusting it with the panel thing, but the switch has such a small range where it makes contact.

Is there a trick to adjusting these things? Do they break in over time?

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  #2  
Old 01-15-2010, 02:57 AM
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Join Date: May 2007
Location: Out in the Boonies of Hot, Dry, Dusty, Windy Nevada
Posts: 9,585
Did you check your shifter bushings for wear? they get loose, and or fall out, then the shifter doesn`t move the lever for the NSS to engauge, or the transmission into park.

Charlie
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there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works
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  #3  
Old 01-15-2010, 09:17 AM
layback40's Avatar
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Location: Victoria Australia - down under!!
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X2 for bushes. Also make sure the plug is good & clean and the pins are tight in the sockets.
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Grumpy Old Diesel Owners Club group

I no longer question authority, I annoy authority. More effect, less effort....

1967 230-6 auto parts car. rust bucket.
1980 300D now parts car 800k miles
1984 300D 500k miles
1987 250td 160k miles English import
2001 jeep turbo diesel 130k miles
1998 jeep tdi ~ followed me home. Needs a turbo.
1968 Ford F750 truck. 6-354 diesel conversion.
Other toys ~J.D.,Cat & GM ~ mainly earth moving
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  #4  
Old 01-15-2010, 09:52 AM
BigDeadWaltz's Avatar
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Posts: 7
Hmm, the bushings seem alright. Though they're cheap enough and this is aggravating enough that I should just replace them.

The plug is a-ok. I ended up refurbishing the whole thing after the plastic crumbled.
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  #5  
Old 01-27-2010, 06:21 PM
savage10ne's Avatar
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Join Date: Dec 2006
Location: East coast, Formerly West Coast
Posts: 62
How do you fix Neutral Safety Switch?

Hi I have an 87 300TD and It only starts on neutral.

I hear its the Neutral Saftey Switch. How would I go about replacing that, and how much should It cost too have a shop do it?


Thanks

Tony
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  #6  
Old 01-28-2010, 01:34 AM
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Join Date: May 2007
Location: Out in the Boonies of Hot, Dry, Dusty, Windy Nevada
Posts: 9,585
They are pretty much plug and play. Been a few years since I did my 85, but as I remember I removed a plug, some screws and put it back together.

here is what it looks like.

http://www.allpartsexpress.com/ShopByVehicle.epc?q=1987-MERCEDES--BENZ-300tdt--/--L6--998cc--3.0l--Diesel--Fi--Turbo-Electrical&yearid=1987%40%401987&makeid=MERCEDES+BENZ%40%40MERCEDES+BENZ%40%40X&engineid=1194353%40%40300TDT++%2F+L6%2D2998cc+3%2E0L+DIESEL+FI++Turbo%40%40300TDT&catid=Electrical%40%40Electrical&subcatid=Neutral+Safety+Switch@@Neutral+Safety+Switch&mode=PA

You will pay quite a bit more for one if a shop replaces it for you. mark up on the part, and probably one hour labor. the shop I sometimes use is up to $117.00 hr.

Charlie

__________________
there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works
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