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#1
11-02-2012, 07:34 PM
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steering box adjustment, forum help
I decided to adjust the steering box on my Merc. I figured the adjuster was straight forward, there was a grub screw held by a nut. How simple could it be. Snug down the screw and tighten the nut.
I went for a drive. OOPS I had about 3" of steering wheel play.... Something is wrong here. I better do a search on peachparts. Sure enough, turn the screw out till it feels a bit snug. I did that and turned it back in just a bit. Nice. Thanks for helping me fix it.
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85 Merc 300D - Unwinding 31 years of wear 86 VW TD Mahindra Diesel Iseki Diesel In 2007 I didn't own a diesel. 
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#2
11-02-2012, 07:37 PM
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I believe you turn the screw CCW to remove the play.
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#3
11-02-2012, 07:40 PM
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Quote:
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1985 300D-189k The 'UD', Ivory and Pinkamino 1979 300D-211k Dark Gray, Parchment A 1980 Harley-~166k and A 1994 Ford diesel pickup-349k and A 1990 gasser Volvo wagon-145k
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#4
11-02-2012, 07:40 PM
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Yep turn it out.
Quote:
__________________
85 Merc 300D - Unwinding 31 years of wear 86 VW TD Mahindra Diesel Iseki Diesel In 2007 I didn't own a diesel.
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#5
11-02-2012, 07:48 PM
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So how much play in the steering wheel do you have now?
__________________
 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"
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#6
11-02-2012, 07:59 PM
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Tiny bit, maybe 1/4", it is less than a half inch. When I got the car with bad ball joints it was like 1.5". After the ball joints it was less than an inch.
Still have the rear sway bar links which click and are loose. They are on order. One of my shocks is leaking, will replace all of them although there is no real bounce.
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85 Merc 300D - Unwinding 31 years of wear 86 VW TD Mahindra Diesel Iseki Diesel In 2007 I didn't own a diesel.
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#7
11-02-2012, 09:05 PM
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Does it center up/return to center okay?
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1985 300D-189k The 'UD', Ivory and Pinkamino 1979 300D-211k Dark Gray, Parchment A 1980 Harley-~166k and A 1994 Ford diesel pickup-349k and A 1990 gasser Volvo wagon-145k
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#8
11-02-2012, 09:09 PM
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Yep, that is why I didn't want it tight. I wish I had read the directions first, to see how much I actually moved it.
Quote:
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85 Merc 300D - Unwinding 31 years of wear 86 VW TD Mahindra Diesel Iseki Diesel In 2007 I didn't own a diesel.
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#9
11-02-2012, 10:17 PM
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The steering box on a 123 is an incredibly durable device.
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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.  [SIGPIC]..I also have a 427 Cobra replica with an aluminum chassis.
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#10
11-02-2012, 10:36 PM
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I like hearing that. Not that I abuse it, but want it to go a long time.
Quote:
__________________
85 Merc 300D - Unwinding 31 years of wear 86 VW TD Mahindra Diesel Iseki Diesel In 2007 I didn't own a diesel.
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#11
11-02-2012, 11:32 PM
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I just sold a car with a chassis with about 350,000 miles on it. The steering adjusted up great when I had it and it still is nice and tight.
__________________
[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual. [SIGPIC]..I also have a 427 Cobra replica with an aluminum chassis.
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#12
11-03-2012, 03:52 AM
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I think that by just adjusting the steering box by blindly fiddling with the adjustment screw is potentially a dangerous thing to do...
...if you are interested in seeing how the adjustment can be made to the steering box - following the instructions in the FSM; but using "equipment" that can be made by yourself instead of the unobtainable special tools - then have a look at this thread What a feeling it will be! A properly adjusted W123 / W116 / W126 power steering box The adjustment procedure is towards the end of the thread. It does involve steering box removal - though if you had a fancy torque wrench I reckon you might be able to do it with the steering box fitted to the car.
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1992 W201 190E 1.8 171,000 km - Daily driver 1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone 1965 Land Rover Series 2a Station Wagon CIS recovery therapy! 1961 Volvo PV544 Bare metal rat rod-ish thing I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior  Don't leave that there - I'll take it to bits!
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#13
11-03-2012, 06:15 AM
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It was a post by you that fixed my problem. Thanks.
Edit: Actually I used the advise from twalgamuth. Good info. No need to rebuild the box. One of the points by my post was that I should figure out how to adjust it rather than blindly attempting it, I think I proved my point. I would agree that having lots of play in the steering box is potentially a dangerous thing. Quote:
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85 Merc 300D - Unwinding 31 years of wear 86 VW TD Mahindra Diesel Iseki Diesel In 2007 I didn't own a diesel. Last edited by Silber Adler; 11-03-2012 at 09:33 AM.
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#14
11-03-2012, 10:17 AM
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Oh no! Are we all rolling into one person?
__________________
1992 W201 190E 1.8 171,000 km - Daily driver 1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone 1965 Land Rover Series 2a Station Wagon CIS recovery therapy! 1961 Volvo PV544 Bare metal rat rod-ish thing I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior Don't leave that there - I'll take it to bits!
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#15
11-03-2012, 10:21 AM
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Quote:
__________________
[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual. [SIGPIC]..I also have a 427 Cobra replica with an aluminum chassis.
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