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Replacing Rack dampener pin
My car has the “Shakes”. Did the diesel purge this past weekend, new motor mounts a few months ago and it still loping at idle. I ordered a new rack dampener pin to replace my silver one and will be installing it soon. Is there any special tips I should know about in replacing it? i.e. Like when I remove the bolt should I expect something to fall out of the IP?
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CJ 1983 300D 12X,XXX |
#2
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Quote:
It is a good idea to replace the original pin with the updated one. I do not think anything falls out, but I am also curious how to install the new one with out over tightening it.
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RRGrassi 70's Southern Pacific #5608 Fairmont A-4 MOW car 13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete. 91 W124 300D Turbo replaced, Pressure W/G actuator installed. 210K 90 Dodge D250 5.9 Cummins/5 speed. 400K |
#3
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Quote:
The mounts were changed a couple of months ago, engine shocks were checked and not flopping around when the mounts were changed, tranny mount is all intact and also did an Italian tuneup. Rack Dampner pin I guess is next.
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CJ 1983 300D 12X,XXX |
#4
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If you get it from ************** they send directions. But IIRC when I did mine, you get it in there till you feel a little resistance and start the car. If it idles (even rough) get it up to operating temp and start bumping it in until the engine smooths out. If I were to feel significant resistance I'd stop turning it and start looking at other causes for the problem. From what I understand, it's kind of like that ALDA adjustment screw--you really don't want the things inside the IP attached to it to break.
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Have you also cracked the fuel delivery lines one at at time to each injector while the engine is idling and note it's characteristics? You should notice a harsher idle. If you crack one and no change, then it's time to do an injector/cylinder swap and retest to rule out bad injector.
Did you also check the operations of the engine shocks? I have seen them look ok visually, but had no resistance when actually moved. The engine shocks should be pretty stiff to move. Glad to here the mounts are good.
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RRGrassi 70's Southern Pacific #5608 Fairmont A-4 MOW car 13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete. 91 W124 300D Turbo replaced, Pressure W/G actuator installed. 210K 90 Dodge D250 5.9 Cummins/5 speed. 400K |
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Just did this...
You need a 14 mm and 16mm open end wrenches I believe.
-Get the car to hot idle, shut the car off. -There is a locknut on the old pin. Loosen this a couple turns. -With the wrench, and then your fingers unscrew the old rack damper pin. A valuable technique: Straddle the oil cooler line with your thumb and middle finger to make the turns. This makes the whole procedure SOOO much easier. I laughed a cosmic laugh when I realized this. - Remove and observe. -Take some of the oil off the old pin and put a little on the new gold pin. -Screw pin into the IP until you feel a little resistance. -Turn the car on. -Now it's time to tweak. Back out the screw until the engine really lopes. You'll know when youre there. -Now screw in a couple turns, to right after it stops loping. It will not get much smoother going in further, it supposedly will be harder to start. This improved my hot idle quite a bit. I got a gold damper screw off a junkyard car. There's an article that ive probably paraphrased pretty much at mbz.org IIRC. Good luck! dd
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------------------------------- '85 300D, 'Lance',250k, ... winter beater (100k on franken-Frybrid 3 Valve Kit) '82 300D, 'Tex', 228k body / 170k engine ... summer car '83 300TD Cali Wagon 210k, wife's car |
#7
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I failed to mentioned I did that. I even switched injectors around to see if would calm down. As for the shocks, there were some resistance I that though were ok, but I am not really sure what a "new" shock would feel like.
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CJ 1983 300D 12X,XXX |
#8
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Thanks this sounds good!
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CJ 1983 300D 12X,XXX |
#9
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My old ones, one was actually broken off, the other had the lower rubber mounts missing. I could move the old ones really easy, even out of the car.
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RRGrassi 70's Southern Pacific #5608 Fairmont A-4 MOW car 13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete. 91 W124 300D Turbo replaced, Pressure W/G actuator installed. 210K 90 Dodge D250 5.9 Cummins/5 speed. 400K |
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Right on except 12 and 14mm. He's right if you go too far in the car will be harder to start and want to die out until warmed up.
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1980 500SE/AMG Euro 1981 500SEL Euro 1982 380SEL 1983 300TD 1983 500SEC/AMG Euro 1984 500SEC 1984 300TD Euro 1986 190E 2.3-16 1986 190E 2.3 1987 300D 1997 C36 AMG 2003 C320T 4matic past: 1969 280SE 4.5 | 1978 240D | 1978 300D | 1981 300SD | 1981 300SD | 1982 300CD | 1983 300CD | 1983 300SD | 1983 380SEC | 1984 300D | 1984 300D | 1984 300TD | 1984 500SEL | 1984 300SD | 1985 300D | 1986 300E | 1986 560SEL | 1986 560SEL/Carat | 1987 560SEC | 1991 300D 2.5 | 2006 R350 |
#11
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this sounds like it might solve my vibe issue as well.can the spring be replaced without buying the entire new part? where is the cheapest source for the gold rack damper? thanx
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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) |
#12
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Junk yard. A new one is in the $90 range.
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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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Rack Dampener pin
Im new to MB diesels, what is this pin what does it do, why does it cost so much and where is it
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#14
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How do you know if a used one is any better than the one you've already got? If its gold does it have a fair shot of being worthwhile?
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1985 300D, 237k. 1994 F-350, 6.9 diesel, 5 spd manual, Banks Turbo. 261k. Sold: 1985 300CD- 267K |
#15
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I took one out of a yard car. I wanted one quick. I really have no guarantee that the pin is %100, but its better than my silver one was.
For $27 bucks I think it would be worth it to invest in a new one, ensuring you have a fresh spring.
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------------------------------- '85 300D, 'Lance',250k, ... winter beater (100k on franken-Frybrid 3 Valve Kit) '82 300D, 'Tex', 228k body / 170k engine ... summer car '83 300TD Cali Wagon 210k, wife's car |
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