Specifications

General Maintenance 4
5975 Series MSD Troubleshooting and Maintenance Manual 123
7 Remove the KF50 clamp. See Figure 17.
8 Lower the diffusion pump.
9 Remove the O-ring assembly from the top of the diffusion pump.
The O-ring will have diffusion pump fluid on it and will be very sticky.
Place the O-ring on clean aluminum foil (shiny side down) to keep your lab
bench and the O-ring clean.
10 Remove the diffusion pump through the side of the MSD.
You may have to tilt the pump slightly to remove it. Do not tilt the pump
past 45 ° if the pump is warm.
Figure 17 Removing the diffusion pump
Foreline gauge assembly
KF50 clamp
O-ring assembly
Diffusion pump
Diffusion pump outlet