Varian TriScroll 300 Series, Replacement Manual, Page: 17 / 32

7
TriScroll 300 Dry Scroll Vacuum Pump
DRAFT 2
/
10
/
0
5
Disassemble the Inboard Housing and
the Orbiting Plate Assembly
1. Remove the M8x12 screw and washer that
attaches the counterweight to the inboard
housing.
2. Lift the counterweight off of the inboard
housing.
The counterweight is keyed to the
crankshaft. Locate the key after removal of
the counterweight from the inboard
housing.
TriScroll 300 Disassembly (continued)
Counterweight
Key