Emerson VSM, VSR, VSS service manual Service, Installation Of Capacity Or Volume Cross Shafts

Service

C)To remove the cross shafts, remove socket head bolts, clamp and spacers from both sides.

VSS 751-2101 compressors cross shafts.

VSM 301-701 & VSS 2601-3001 compressors

cross shafts

Volume control cross shaft.

Capacity control cross shaft.

INSTALLATION OF CAPACITY OR VOLUME CROSS SHAFTS

A)To reassemble either set of capacity or volume ratio slide valve racks, install the cross shaft with the pinion gear onto the back plate, place the remaining pinion gear on the shaft and drive in the roll pins. Install clamps, spacers and bolts on both sides. Tighten the bolts to the recom- mended torque values.

B)The slide valve sets must be synchronized on VSS 451-3001 and dual gate VSM 301-701 units. Both slide valve racks for either the volume ratio or capacity slide valves must engage the cross shaft gears at the same time. Push the racks all the way towards the suction end of the compressor until they stop. Install washers and jam nuts on the slide valve shafts. Repeat the procedure for the remaining set of slide valve racks.

D)Drive the roll pins from pinion gear from one side. Remove pinion gear. Slide the cross shaft with the remaining pinion gear or spacers out of the opposite side. Repeat the procedure for the remaining cross shaft.

C)Install (2) guide rods to position the discharge manifold. Install a new manifold gasket and the discharge manifold. Install the dowel pins and bolts, tighten manifold bolts to the recom- mended torque value.

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