1264 Maintaining the MSDTo remove the foreline gaugeTo remove the foreline gaugeMaterials needed: Screwdriver, flat-blade, large (8730-0002)1 Vent the MSD (page 52).2 Separate the MSD from the GC (page 112).3 Unplug the foreline gauge cable from the foreline gauge.4 Disconnect the foreline gauge assembly from the diffusion pump outlet.5 Loosen the hose clamp.6 Pull the foreline gauge assembly out of the foreline hose.: $ 5 1 , 1 * 7KHIRUHOLQHSXPSDQGGLIIXVLRQSXPSPD\VWLOOEHKRW& $ 8 7 , 2 1 Be sure the MSD is vented to atmosphere before breaking the seal at the foreline gauge.Never vent the MSD at the pump end; use the vent valve.
