Emerson VSR, VSM, VSS service manual Service, Removal

Service

For VSM 451 thru 601 compressors, do not use side rails.

901A

For VSS 751/901 & VSS 1051 THRU 1301 compressors, use side rails and assemble to gaterotor stabilizer

as stamped.	901B
	901D
	901C

Drive End

GATE ROTOR ASSEMBLY CAUTION

Gate rotor removal and assembly is divided into distinct instructions, instructions for all VSS models and different instructions for all VSM models. Please follow the appropriate set of instructions.

REMOVAL

A)Prepare the compressor for servicing.

NOTE: All parts must be kept with their appro- priate side and not mixed when the compres- sor is reassembled.

B)Remove two upper bolts from the side cover, 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.

C)Turn the main rotor so a driving edge of any one of the main rotor grooves is even with the back of the gate rotor support.

D)Insert the gate rotor stabilizer. The side rails are not required on VSS 451 thru 601. For the VSS 751 thru 901 and VSS 1051 thru 1301 compres- sors, use the side rails and assemble to the gate rotor stabilizer as stamped. For the VSS 1551 thru 3001, 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.

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