I had seen a post awhile ago regarding replacing the O ring on the stop lever. Well a week later (relying on my memory, big mistake) I removed the lever and proceeded to remove the hollow bolt that holds it in place as well. No I did not remove the clip behind the stop lever first, as I mentioned above I was going by memory.

I recognized my mistake and went to reassemble it. The shaft is now loose (in and out) in the housing. I pulled the vacuum shut-off and realigned the peg back into its slot on the internal arm of the shaft but I had to use a thicker washer to bring it back to normal. Now the vehicle has no power while driving. At idle in park or neutral the motor performs as normal and shuts off as normal.

What else does the stop lever shaft attach to that would cause this lack of performance? Does anyone have an exploded view of what the internals of that part of the pump is supposed to look like?

I may have bent the slotted arm at the end of the shaft when removing the hollow securing nut.

If I need to replace the shaft (I have another pump laying around) can I access it via the vacuum shut-off opening. Take it out and swap in a new one?

Any help on this is greatly appreciated.

OM603 pump 87 E300 with # 18 head

Mark

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91 300GD SWB with transplanted 87 OM603 turbo motor