Agilent Technologies 5975T LTM GC/MSD, Troubleshooting And Maintenance Manual

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124 Troubleshooting and Maintenance Guide
10
General Maintenance
11
Place the new main 0-ring into the groove in the pump
frame, ensuring first that the groove is clean.
12 Replace the outboard housing, ensuring that the tip seal has
not fallen out of its groove. See
Figure 6 .
13
Replace the four M5 bolts in the outboard housing. See
Figure 6 .
14 Reconnect the electrical connector at the front cowling.
15 Replace the front cowling and the four M5 bolts that hold it
in place. See
Figure 6 .
16
Reconnect the pump to electrical power.
17
Reposition the foreline pump, providing slack in the tubing
and cables.
The foreline pump may be located on the floor or on the lab
bench next to the GC/MSD.
18 Pump down the instrument.
Figure 6 Changing the dry pump tip seal
Front cowling bolts
Front cowling
Frame bolts
Outboard housing
Orbiting scroll
Tip seals and main o-ring are not shown here