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#1
11-03-2011, 07:59 PM
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300D voltage regulators
lights on my 300D are dim and kinda yellow casting. Is the regulator adjustable?
Any other ideas? 
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#2
11-03-2011, 08:16 PM
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No, it either is working properly, failing, or failed.
Check the battery for voltage both with the engine on and off.
__________________
83 SD 84 CD
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#4
11-03-2011, 10:30 PM
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Pull the regulator (it's part of the alternator and can be removed without removing the alternator -- depending on the year of your 300D, maybe) and check for worn brushes.
__________________
 "Buster" in the '95 Our all-Diesel family 1996 E300D (W210) . .338,000 miles Wife's car 2005 E320 CDI . . 113,000 miles My car Santa Rosa population 176,762 (2022) Total. . . . . . . . . . . . 627,762 "Oh lord won't you buy me a Mercedes Benz." -- Janis Joplin, October 1, 1970
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#6
11-03-2011, 11:44 PM
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here's a page at dieselgiant that has a good walkthrough with pics of the regulator -
Mercedes Voltage Regulator Install as said before, get a multimeter and check voltage first to see where you are at first.
__________________
1981 240D ... 265k 1977 240D ... 265k 1977 240D ... 250k
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#7
11-04-2011, 12:35 AM
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Quote:
Get a meter and diagnose the problem before you go throwing parts at it.
__________________
Whoever said there's nothing more expensive than a cheap Mercedes never had a cheap Jaguar. 83 300D Turbo with manual conversion, early W126 vented front rotors and H4 headlights 401,xxx miles 08 Suzuki GSX-R600 M4 Slip-on 26,xxx miles 88 Jaguar XJS V12 94,xxx miles. Work in progress. 99 Mazda Miata 183,xxx miles.
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#8
11-04-2011, 12:52 AM
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if you or someone you know gets a magazine that has harbor freight coupons in it... every couple months the "free item" coupon is a multimeter!
__________________
1981 240D ... 265k 1977 240D ... 265k 1977 240D ... 250k
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