Vilter Manufacturing Compressor VSG3001

Gate Rotor Thrust Bearing Removal

Remove gate rotor bearing housing

Removal of Thrust Bearings on VSG Units

Remove bolts from the clamping ring

Remove thrust bearing clamping ring

Remove thrust bearings from housing

Removal of Thrust Bearings on VSSG Units

Remove retaining ring from gate rotor support

Remove the snap ring and washer from the gate rotor assembly

Lift gate rotor blade assembly off the gate rotor support

Check damper pin and bushing for excessive wear

Replace damper pin and bushing if necessary

Install damper pin bushing in gate rotor blade from the back side of the blade

Ensure the bushing is fully seated

Check rack to rack clamp and rack clamp spacer clearance on all four slide valves

Check torque of socket head cap screws

Is there excessive movement between the slide valve rack shafts and the rack?

Ensure jam nuts on the end of the slide valve rack shaft are tight

Check for loose or broken roll pins in gears

Describe any excessive wear on moving parts and note parts to be replaced

Inspection of Slide Valve Assemblies

Prepare the compressor for servicing

Remove the gate rotor access covers and inspect the slide valve carriage

Remove the gate rotor support to check the clearance of the slide valve clamps

Inspect the clearance between capacity and volume slide valve clamps and slide valve carriage

Contact the factory if slide valves are worn beyond tolerances

Removal of Slide Valve Carriage Assemblies

Prepare the compressor for servicing

Determine which gate rotor support needs removal

Prepare the compressor for servicing as outlined in section REMOVAL (All VSG)

Remove bolts (281) holding the shaft seal cover (218) and use threaded jacking holes to assist in removing the cover

Check for oil drainage as the cover is removed

Remove the rotating portion of the shaft seal (219C)

Remove oil seal (230) from cover

Remove the stationary portion of the shaft seal (219B) from the seal cover using a brass drift and hammer