I have a 1985 300d that I need to replace the rack damper bolt (idle stabalizer), any one out there that is familiar with the adjustment procedure on this puppy?

Start with the bolt loosened so it is not engaged. Engine warmed up and idling with transmission in "Drive." The turn the bolt in until you get a smooth idle, then stop. Going too far will cause a "hard start" condition. Tighten the lock nut and you're done.

Yep, except I did mine in park. Locknut 14mm adjusting bolt 12mm, I used stubby ratching wrenches.

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83 SD

84 CD

I thought you were sopposed to start with it screwed in all the way then back out untill the idle gets bad then screw it in a turn or two.

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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

Where is the bolt located? I'm pretty sure I need to adjust mine too. My 85 300SD starts hard in below freezing temps and the glow plug circuit has been checked out and tests fine.

Very back of the injection pump. Checked you IP timing lately?

When first installing new bolt, reuse "o" ring, insert new bolt by hand until you feel it make contact, tighten lock nut. Adjust by backing out till smooth, do so only if idle flucuates, hard starting may be unrelated.

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83 SD

84 CD

i put my new $29 gold one in today. i was able to bottom it out by hand. i played with it in and out until i got it as far out as i could with a smooth idle in reverse. is there any problems with having the damper too far in?

BTW. it made a world of difference, idling now very smooth at 700 in gear. I still had the silver bolt and it was in all the way to the lock nut. much less spring force on the silver bolt

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1982 300CD Turbo (Otis, "ups & downs") parts for sale
2003 TJ with Hemi (to go anywhere, quickly) sold
2001 Excursion Powerstroke (to go dependably)
1970 Mustang 428SCJ (to go fast)
1962 Corvette LS1 (to go in style)
2001 Schwinn Grape Krate 10spd (if all else fails)

Now the $60 question is where did you get a $30 pin?

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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

$30 pin link:


http://***************/search/product.aspx?sid=rxfjchauridy4vn5it1kqouo&partnumber=1420560014

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1983 123.133 California
- GreaseCar Veg System

Doesn't appear to be $30 bucks......

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Jimmy L.
'05 Acura TL 6MT
2001 ML430 My Spare

Gone:
'95 E300 188K "Batmobile" Texas Unfriendly Black
'85 300TD 235K "The Wagon" Texas Friendly White
'80 240D 154K "China" Scar engine installed
'81 300TD 240K "Smash"
'80 240D 230K "The Squash"
'81 240D 293K"Scar" Rear ended harder than Elton John

They were just a couple of weeks ago!!!

I got a relatively new gold one in the parts yard for $1+tax out the door.

Wow, I posted this link here like 7 days ago and it was $29.23. They most of had a run on them or someone from that company found out they were selling them way below market value.

Replacing Rack dampener pin

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1983 123.133 California
- GreaseCar Veg System

i found out this morning there is a problem with having the damper bolt too far in. my engine started fine but it will not idle cold. i had to hold the accellerator or it would drop the idle down to 200 then stall. i turned it out intil no pressure then turned it back in until it touched and gave it a 1/8 turn to snug then locked it. still idles fine hot but now it idles good cold too.

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1982 300CD Turbo (Otis, "ups & downs") parts for sale
2003 TJ with Hemi (to go anywhere, quickly) sold
2001 Excursion Powerstroke (to go dependably)
1970 Mustang 428SCJ (to go fast)
1962 Corvette LS1 (to go in style)
2001 Schwinn Grape Krate 10spd (if all else fails)