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Custom Idle Adjust Screw OM617
For any of you who have managed to break the idle adjustment screw mount on the side of your injection pump this is for you:
My "repair" for the mount can be found here...quite a while ago actually: help! anybody I grew tired of the idle always being so low (just a hair above 500) and not being able to do anything about it. The engine would turn on/off poorly. I'd rather it be around 750 as it should be. So I spoke with a machine shop locally and they pointed me to this: www.McMaster-Carr.com Part Number: 98861A324. Cost $17 M10x1.00 Rod Length 1 meter. I plan on using this, in place of the factory adjust screw to compensate for the height at which my "fix" is currently mounted. The downside of this is that I will loose the spring loaded STOP feature. The cons of this have been pointed out here: 617 Idle Adjust Screw Replacement Quote:
I plan on cutting the rod to length with an angle grinder (cutting wheel) and then taking the cutting wheel perpendicular to the rod and cutting a notch for a flat head screw driver. The important thing here is not to make the rod too long as I still need to be able to get a deepwell socket over the locking nut. Thus far in in-garage testing its working fine. I got the idle to sit at a nice ~750 rpm. Engine start/stops much better than before. Its not drivable yet, I think you'll see why: Additionally, someone mentioned using the knob style adjust system from an older 617. I actually forgot about this until I was looking at old posts while writing this one....I wasn't really sure how it works and if this would provide with sufficient length. I would imagine that MB kept the same range of adjustment with both implementations... I hope this helps someone out there who made the same mistake I did a few years ago. Any comments/suggestions/critiques are welcome. Thanks!
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