2203M4JE-MY-iS2-N_2017.04.
Chapter 5 Maintenance
Screw Compressor i-series 5.5 Reassembly
5-28
5.5.7 Balance Piston
a) With the notch of balance piston [30] aligned with the slotted set screw of M rotor shaft [31], install
the balance piston.
b) With the notch of the balance piston sleeve [33] aligned with the spring pin, install the balance
piston sleeve.
c) Install snap ring [32] and O-ring [35].
5.5.8 Bearing Cover
a) Screw two stud bolts symmetrically to the flange surface of the main rotor casing. Apply sufficient oil
to the flange surface (Photo 030), and then place bearing cover gasket [17] (Photo 031).
Take note that the gasket has right/left difference.
b) While using lifting tools, temporarily tighten bearing cover [16] with 4 bolts.
c) After driving the alignment pin in position (Photo 032), tighten the bolts and remove the lifting tools.
Photo 030 Applying Oil with Brush Photo 031 Gasket Photo 032 alignment pin
Photo 033
Temporarily Tightening Bolts Photo 034 Final Tightening with Torque Wrench
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