This is a front view of the impeller inlet This is a front view of the impeller inlet. Take thrust reading before disassembling.

This is the compressor front view removed from the chiller This is the compressor front view removed from the chiller. The compressor feet were lagged to the floor and the turbine end supported by blocking.

This is the turbine wheel viewed with the turbine housing cover removed.

This is the turbine end view with cover removed showing supports.

Side view, motor terminal side.

Motor terminals.

Motor terminal damage.

Motor terminal damage.

Side view, motor terminal side.

Side view showing supporting the turbine end.

Side view showing supporting the turbine end.

Removal of the impeller shroud. Use threaded rod to help guide off Removal of the impeller shroud. Use threaded rod to help guide off. Use jacking bolts to separate.

View of impeller with impeller shroud removed.

View of impeller, nose piece, impeller washer bolt.

Shown wear on impeller edges.

Removal of the impeller bolt Removal of the impeller bolt. Bolt is right hand thread, removal is counterclockwise. A large combination wrench will hold the nose piece so you can loosen the bolt.

Showing heating up the Impeller for removal Showing heating up the Impeller for removal. The wheel puller is in place to remove the Impeller. Caution not to overheat any part of the Impeller.

Removal of the Impeller after heating up Impeller and expanding Removal of the Impeller after heating up Impeller and expanding. If it is heated properly, it will come off very easily.

Impeller removed showing high speed shaft, keys and Impeller labyrinth.

View of back side of Impeller.

Another view of back side of Impeller.

View showing removing the high speed shaft assembly View showing removing the high speed shaft assembly. There are no jacking bolts to remove the high speed shaft assembly. It can be removed by threading rod into the shaft, placing some flat stock across the Impeller diffuser housing and draw it out.

View with the high speed assembly removed.

View with the high speed assembly removed.

Removal of the diffuser housing using jacking bolts and threaded guide rods.

View with diffuser housing removed.

Removal of the turbine wheel using a 3-point wheel puller.

Heating up the turbine wheel for removal Heating up the turbine wheel for removal. Be careful not to overheat turbine wheel.

View with turbine wheel removed showing shaft, nozzle block labyrinth, nozzle block and turbine housing.

View with turbine housing removed View with turbine housing removed. Note: nozzle block labyrinth must be removed first. Nozzle block can be left in housing and removed as one piece. Use threaded rods as guides and jacking bolts to separate.

Remove stator using threaded rods as a guide and jacking bolts to separate. There is a rigging hook on top of the stator.

Showing stator being pulled back from compressor housing showing guide rods.

End view showing guiding stator over rotor End view showing guiding stator over rotor. It can be balanced from the end and guided off.

Another view of stator removed from the compressor.

Removal of the transmission assembly being supported on blocking Removal of the transmission assembly being supported on blocking. Use the same guide rods used in removing the stator and sling it around the shaft close to the transmission housing. Draw back enough to remove the bearing sensor wires.

View of the low speed gear.

Front view of the transmission assembly.

Side view of the transmission assembly.

Removing the bolt for the low speed gear. Bolt is right hand thread Removing the bolt for the low speed gear. Bolt is right hand thread. Remove counterclockwise. Take thrust reading before removing.

Use a 3-point wheel puller to remove the low speed gear.

Low speed gear removed showing shaft and low speed oil catcher.

Removal of the low speed oil catcher.

Removal of the high speed oil catcher.

View of the drive end bearing and labyrinth.

View of the drive end bearing with the labyrinth, shaft and rotor removed.

Close up view of the drive end bearing surface.

Close up view of the drive end bearing surface.

View of the compressor end low speed bearing View of the compressor end low speed bearing. Use jacking bolts to remove.

View of the high speed bearing. Use jacking bolts to remove.

Close up view of the high speed shaft assembly showing the melted babbit from the thrust shoes.

Another close up of the excessive clearance between the thrust shoes and the high speed shaft. This was over .150”.

Another view of the damage to the thrust shoes Another view of the damage to the thrust shoes. Note: shoe lifted off of pin.

Another view of the clearance between the high speed shaft and the thrust shoes.

Another view of the clearance between the high speed shaft and the thrust shoes.

View of the high speed labyrinth.

View of the slinger and high speed bearing housing.

Front view of the slinger and high speed bearing housing.

Close up view of the slinger on the high speed shaft.

Close up view of the high speed shaft labyrinth.

View of the high speed shaft.

Another view of the high speed shaft.

View of the thrust bearing assembly disassembled.

View of the high speed shaft assembly disassembled.