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Fixed my lock cylinder on driver s side
Hi folks:
I just thought I would share this with you. My car's driver-side lock stopped responding to key after behaving wierd for 6 months or so. During those 6 months tried everything including, WD-40, silicone spray, liquid wrench, lithium grease, brake cleaner, graphite lock spray etc etc.. you name it. Also got a 15 bucks new key from dealer. Nothing worked. Not even an improvement. The key would go in but not twist. All other mechanism of locking were good. So I was sure that it was the lock cylinder. Took the lock-assembly out and decided to take it apart to get to the cylinder. A very easy job. There is a small pin ( looks like one in the watch strap) that needs to be removed by using a small nail an tiny hammer. Once thats out, the cylinder can be removed easily by putting the key in the keyhole and pushing the cylinder out from other side. I saw one of the square tooth on the cylinder was not fully retracted when the key was in and that was the tooth that would have prevented the twist of the cylinder, so pulled it out with a small plier and there was a small brass spring under it which was bent and out of shape. Pulled the spring out, slide it over a eye glass repair screw driver and manipulated till it was straight.( you can find such springs at locksmiths place too). Replaced the spring in its place, put back the metal tooth, cleaned the whole lock cylinder with engine degreaser, then brake cleaner. Refitted the whole thing in reverse sequence and BINGO it works like a new one. Also lubricated with graphite lock spray. Total cost $0.00 Total time 40 minutes Job satisfaction......... PRICELESS. In summary-- if your lock is not working and its for sure the cylinder mechanism, its worth fixing it yourself or a locksmith. I am sure a locksmith would charge you about 20 bucks for such a job( afetr you have removed the lock assembly from the door). Its still better than getting a new lock with a different key for 90 bucks. or an old one from junk yard for 40-50 bucks and again with different key. Hope this helps some folks. MVK
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One penny saved is three penny earned. 1985 300D Turbo 179,000miles |
#2
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MVK:
I think the best phrase in your write-up was "job satisfaction.....PRICELESS". I continue to be amazed at the MB's ability to get fixed and run well verses the popular culture's idea of throw away cars. Congrats Don
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DAILY DRIVERS: '84 300DT 298k (Aubrey's) '99.5 Jetta TDI IV 251k (Julie's) '97 Jetta TDI 127k (Amber's) '97 Jetta TDI 186k (Matt's) '96 Passat TDI 237k (Don's '84 300D 211k Mint (Arne- Undergoing Greasecar Conversion) SOLD: '82 240D 229k (Matt's - Converted-300DT w/ 4 speed |
#3
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Thanks Don.
I thought no one will see this big write up. MVK
__________________
One penny saved is three penny earned. 1985 300D Turbo 179,000miles |
#4
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MVK
Good show. I will file your repair away as it may happen to me some day. Thanks
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1985 Euro 240D 5 spd 140K 1979 240D 5 spd, 40K on engine rebuild 1994 Dodge/Cummins, 5 spd, 121K 1964 Allice Chalmers D15 tractor 2014 Kubota L3800 tractor 1964 VW bug "Lifes too short to drive a boring car" |
#5
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MVK great idea I saw it,and I'll file it for future use Doesn't it feel great when you tackle a problem like that and it turn's out for the best.Bear
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W123 '82 300D red 202,000 miles G460 '83 280 GE LWB 69,000 miles Mercedes-Benz Club member http://www.mercedes-benz-club.co.uk/ S Klasse Club Deutschland http://www.s-klasse-club.de/ |
#6
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Yes it sure makes me feel good. Also the fact that its a very little thing that most of the times is fixable with little or no money thus avoiding major expense.
Like fixing the alternator carbon brushes, blower motor carbon brushes, replacing bearing and brushes on Auxillary cooling fan, fixing the aux water pump etc etc. to name a few. I thinks these cars are very good and home-mechanic friendly. Thank you all for your support. MVK
__________________
One penny saved is three penny earned. 1985 300D Turbo 179,000miles |
#7
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MVK,
Thank you for the post. You gave me the confidence to go after my non-functioning trunk lock. turned out to be merely a stuck slide in the cylinder (grease and other gook). CLeaned it, put it back in, and Viola! no more need to let the vac. lock the trunk! Thanks again!!
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Paul 2004 E500 4matic; 72,000mi |
#8
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You are welcome Wallknight.
Thats all we need once in a while- A little xtra push to get courageous enough to tackle a job that otherwise looks impossible. MVK
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One penny saved is three penny earned. 1985 300D Turbo 179,000miles |
#9
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I'm curious: If the key would not turn, how was the lock removed from the door handle?
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2008 E350 4matic / Black/Anthracite ------------------------------------ Gone but not Forgotten: 2001 E430 4matic, 206,xxx miles, Black/Charcoal 1995 E320, 252,xxx miles, Black/Grey 1989 260E, 223,00 miles, Black/Black |
#10
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I've got a spare handle (without a key) that I want to get MY keyed cylinder into, because of the alarm switch. I've got the handle all apart (found all the roll pins), but can't get the old cylinder out since I don't have a key. Any ideas?
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The Golden Rule 1984 300SD (bought new, sold it in 1988, bought it back 13 yrs. later) |
#11
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MVK, I have the same problem. Your write-up is excellent. Can you (or someone) tell me how to get the lock assembly out of the door ? I do know how to get the door panel off. I 'll probably go ahead and do the check strap this time, if I have to get in there. Driver's doors take a beating. Thanks all.
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#12
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I'll be trying this on my new 240 Tomorrow!
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1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver 1982 300SD - 232K miles - Wife's Daily Driver 1986 560SL - Wife's red speed machine |
#13
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My drivers door lock works worse and worse as the temp falls
I have put graphite and wd-40 in it a plenty, the wd-40 helps quite a bit, but it wears off. In a year or two I'll probably just have to get a new lock for it. The passenger one works so flawlessly, I wish the drivers one felt/worked like that....can they be switched? I would imagine not because of the vac locks switch thing....but maybe they can.....anyone know?
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-diesel is not just a fuel, its a way of life- '15 GLK250 Bluetec 118k - mine - (OC-123,800) '17 Metris(VITO!) - 37k - wifes (OC-41k) '09 Sprinter 3500 Winnebago View - 62k (OC - 67k) '13 ML350 Bluetec - 95k - dad's (OC-98k) '01 SL500 - 103k(km) - dad's (OC-110,000km) '16 E400 4matic Sedan - 148k - Brothers (OC-155k) |
#14
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I would try taking it apart and taking a look. It doesnt sound like it is too dificult of a procedure. My key wont even turn the lock.
__________________
1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver 1982 300SD - 232K miles - Wife's Daily Driver 1986 560SL - Wife's red speed machine |
#15
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Non-turning locks as usually related to failing/worn leaves or springs that are basically done.
OR the tumbler is wearing out and the leaves now wobble around in there and don't work properly (my problem). Just remember that the spring was messed up for a reason...I would not be too terribly suprised if you are back in there before too long with a very similar problem. Next time you are at the wrecking yard start lookin for a passenger side door lock tumbler to put your leaves into. Thats what I did on the SD...I've had that door lock out about 7 times. *sigh* Ya get good at it after awhile |
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