Emerson VSG Manual page 33

For VSG 451 thru 601
compressors, do not
use side rails.
For VSSG 751/901 & VSG 1051/1201
compressors, use side rails and
assemble to gaterotor stablizer
as stamped.
Drive End
Service
GATE ROTOR ASSEMBLY CAUTION
Gate rotor removal and assembly is divided into dis-
tinct instructions, instructions for all VSG and VSSG
models and different instructions for all VSM models.
Please follow the appropriate set of instructions.
REMOVAL ( All VSG
90 1A
A) Prepare the compressor for servicing.
B) Remove two upper bolts from the side cover,
90 1B
90 1C
C) Turn the main rotor so a driving edge of any one
D) Insert the gate rotor stabilizer. The side rails
)
NOTE: All parts must be kept with their appro-
priate side and not mixed when the compres-
sor is reassembled.
and install guide studs in the holes. Remove the
remaining bolts and side cover. There will be
some oil drainage when the cover is removed.
of the main rotor grooves is even with the back
of the gate rotor support.
are not required on VSSG 291 thru 601. For the
VSG 751 thru 901 and VSG 1051 thru 1201
compressors, use the side rails and assemble to
the gate rotor stabilizer as stamped. For the VSG
1551 thru 2101, use the side rails and assemble
to the gate rotor stabilizer.
The gate rotor stabilizer is designed to hold the
gate rotor support in place and prevent damage
to the gate rotor blade as the thrust bearings and
housing is being removed.
33