Injection Pump Arm

[Burns]

Hello all,

I've been following digging through this forum since November while getting my grandfather's 65 230sl back in running condition, sat for 10yrs.
I just got the injection pump back from Fairchild and after letting the electric pump run for a minute while I checked for leaks I noticed I had a leak around the injection pump control shaft, appeared to be coming from the nut/crushed washer under the spring. So to tighten it I removed the arm.
That's when I hopped on here and realized that may have been a mistake, though I had no way to tighten that fitting without removing the arm. It did stop the leak but now I dont know if I am safe to reinstall the arm or if it needs to go back to Fairchild for calibration again.

Hope everyone is staying safe out there.
Thanks

[Benz Dr.]

Send it back. Don't take a chance.

[Shvegel]

that arm is installed at a precise angle and then the pump is calibrated based on the angle of the arm in degrees.  They may have to redo the entire calibration on the pump.  Also fuel should be nowhere near that arm as it leads into the governor portion of the pump.

[Burns]

Thanks for the responses guys. Shipping the pump back today.