My son has a 1984 300D (123). The power antenna has developed a noise when it hits maximum travel and when it goes completely down. I know this particular antenna uses a timed motor operation rather than limit switches like th antenna on my older 300SDs. The antenna goes up all the way and retracts all the way. While it is travelling, its operation is smooth.

Is this noise I'm hearing simply the limit clutch slipping and it's gotten noisy in its old age? Is it anything to worry about?

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Tom Evans
69 280SE 91K (wish I still had it)
73 220D 98K
78 300D 134K
78 300D 185K
81 300SD 301K (still have)
82 300SD 321K (still have)
84 300D 268K
84 6.2 Diesel GMC Suburban 225K (a whole different story!)

I had a 83 300SD that did the same thing, the gear that pushes and pulls on the toothed nylon piece had worn material off the teeth at the top and the bottom. The gear would slip on the nylon when almost fully retracted or raised and the motor did not know when to stop. I had to buy a whole new unit. Now I see parts to replace just the mast and the nylon drive piece.

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1987 300D 146K Original #14 Head
One eye on the road, the other on the temp. gauge

Gone But Not Forgotten
1983 380 SEL Long gone
1983 300SD Wish I hadn't traded it in on a 90' Corvette
1989 300SE My all time favorite
1995 E420 Went like a bullet

Yep, mine does the same...

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[/SIGPIC]~cirrusman

1983 Mercedes Benz 300SD - Wife calls him "Chitty Chitty Bang Bang"
[SIGPIC]




1983 Toyota Tercel (Tommy, The little Toyota that could)
1965 Ford F100 (Grandma Ford)
2005 Toyota Sienna (Elsa, Wife's ride)


Gone:
1988 Toyota Pickup
2004 Subaru Outback

1987 Cadillac Fleetwood Brougham
1986 Volvo 740 GL Station Wagon - Piece of junk.
1981 Volvo 242 DL 2 Door - Hated to see it go. R.I.P.
1987 Pontiac Fiero GT