mycom 280J

2205B0JE-DA-J-N_2014.05.
5 Maintenance and Inspection
Screw Compressor J-series 5.4 Disassembly and Assembly of the Compressor
5-52
5.4.15.1 Common Precautions for Removal/Installation
 Retaining ring
 The retaining ring may jump out, causing injuries. Always use retaining ring pliers
of appropriate size and wear protective goggles.
5.4.15.2 Preparation for Suction Adapter Removal
1. Loosen the hexagon socket head cap screw (No. 493: M20×50 for 170J, M22×60 for 220J) while
the suction cover and the main rotor casing are assembled, because it is difficult to hold by hand
the suction cover separately while loosening the hexagon socket head cap screw.
 Preparation for suction adapter removal is not required for 280J.
5.4.15.3 Precautions for Removal
 Balance piston cover inner cover
1.
Using eyebolts (M8), remove the balance piston cover inner cover.
 For 170J, the balance piston cover inner covers on the male rotor side and the female rotor side
are the same. But that on the male rotor side is attached with the spring pins. It is not necessary
to remove these spring pins from the balance piston cover inner cover.
 Balance piston
1.
Using eyebolts (M8), remove the balance piston with the balance piston sleeve.
 Balance piston sleeve
1.
Using eyebolts (M8), remove the balance piston sleeve.