2205B0JE-DA-J-N_2014.05.
5 Maintenance and Inspection
Screw Compressor J-series 5.4 Disassembly and Assembly of the Compressor
5-32
5.4.9.1 Common Precautions for Removal/Installation
Bearing cover
If the lifting equipment and lifting slings in use do not have sufficient loading
capacity, the bearing cover may fall causing injuries and damage to the
compressor. Before starting the lifting work, always check that the lifting
equipment and lifting slings have sufficient loading capacity. Do not allow
anyone to be under the lifted bearing cover. (Bearing cover weight: 47 kg for
170J, 74 kg for 220J, 82 kg for 280J)
Do not damage the male rotor shaft surface, when removing/installing the
bearing cover.
5.4.9.2 Precautions for Removal
Mechanical seal assembly (rotating ring)
Loosen the hexagon socket set screw for at least more than 5 turns and remove
mechanical seal assembly from the male rotor shaft. If the hexagon socket set
screw is not turned and loosened for 5 turns or more, the male rotor shaft surface
may be damaged.
Oil seal sleeve/retainer for oil seal
Loosen the hexagon socket set screw for at least more than 2 turns and remove
the oil seal sleeve from male rotor shaft. If the hexagon socket set screw is not
turned and loosened for 2 turns or more, the male rotor shaft surface may be
damaged.
1. Loosen the hexagon socket set screw for oil seal sleeve at least 2 turns or more.
2. Attach eyebolts (M8) to the retainer for an
oil seal, remove the retainer and oil seal
sleeve as an assembly.
3. Using a flat screwdriver and a hammer,
remove the oil seal from the retainer.
The spring pin (3 dia. x 8/3 dia. x 10)
attached to the bearing cover may not
be pulled out during a regular service.
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