I recently purchased a halfway decent shape '80 300sd and the best part about it is it's got a good running 617.950 turbo onboard. Whoever had it before me disabled the stop button by screwing the rack damper screw (I think that's what it's called-it's the big screw with the lock nut on it on the Injection pump) but anyways, they used that to set the idle speed. That's fine but it is impossible now to push the stop button because that limits the travel of the throttle linkage. So...

1. -I'm planning to undo all of that. But now, how do I adjust the idle? I think I read somewhere once that it's adjusted by the cruise control cable adjuster. Is that correct.

2. -Also, any tips on adjusting all of the linkage? I've messed with it on other cars but without any reference so I think I'd be better leaving it until I know what I'm doing.

Thanks!!!
Nick

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-E300d '99 350k
-Suburban '93 220k
-TDI Jetta '03 350k
Sold
-F250 '96 7.3
-Dodge Ram 12V
-E320 '95 200k
-E320 Wagon 1994 155k
-300d Turbo '87 187k miles
-E320 1994 200k
-300d Turbo '84 245k (sold to Dan62)
-300d Turbo '84 180k
-300sd '80 300k
-7.3 Powerstroke Diesel 15P Van 500k+ miles
-190d '89 Non Turbo 2.5 5cyl 240k (my first MB)
Tom's Imports of Columbia MO Ruined the IP in changing leaky delivery valve O-Rings - Refused to stand behind his work. Mid-MO MB drivers-AVOID Tom's.

There should be an idle adjust screw on the IP. It's in between the IP and the block, and is sticks up vertically. The rack damper bolt is on the rear of the IP right in front of the oil filter housing, and stick out horizontally.

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That's what was adjusted by the previous owner. It's at a good idle but with that screw tightened as much as it is, it's impossible to press the stop button. That limits the reverse travel of the throttle on the IP. So, no stop. Thankfully the shutoff valve still works. It's a wonder at 300k!!

__________________
-E300d '99 350k
-Suburban '93 220k
-TDI Jetta '03 350k
Sold
-F250 '96 7.3
-Dodge Ram 12V
-E320 '95 200k
-E320 Wagon 1994 155k
-300d Turbo '87 187k miles
-E320 1994 200k
-300d Turbo '84 245k (sold to Dan62)
-300d Turbo '84 180k
-300sd '80 300k
-7.3 Powerstroke Diesel 15P Van 500k+ miles
-190d '89 Non Turbo 2.5 5cyl 240k (my first MB)
Tom's Imports of Columbia MO Ruined the IP in changing leaky delivery valve O-Rings - Refused to stand behind his work. Mid-MO MB drivers-AVOID Tom's.