mycom 2016 C Series Instruction Manual page 95

The measurement method and adjustment method are explained below.
a) Push the rotor to the discharge side while the thrust bearing inner ring is secured to the rotor shaft.
Push the rotor from the suction side to the discharge side by using a jig (Teflon). Alternatively, by
using a chamfered part of the lock nut, pull out the rotor with the edge of a flat blade screwdriver as
shown in Figure 5-10.
b) When the rotor has been pushed to the discharge side, prepare to install the thrust bearing gland.
Attach a dial gauge to the edge of the shaft, and match the needle to 0. Dial gauge should be
attached to the position near the side bearing, as shown in Photo 090, in order to make the bearing
gland tightening work easier and precise.
c) Fasten the bearing gland by tightening the four bolts (without conical spring washer inserted)
evenly and gradually to the specified torque. Tightening each bolt to the specified torque at once
will lead to uneven tightening. Tighten bolts in turn and in several steps. Then, read the dial gauge
measurement.
This value is the actual end clearance.
Table 5-11 Tightening Torques for ThrustBearing Glands
Model of the
compressor
High-stage
2016**C
Low-stage
Compound 2-stage Screw Compressor 2016**C
Figure 5-10 End Clearance Adjustment [Ⅰ]
Tightening
torque
N·m kgf·cm
40 400
50 500
5-50
2200LZJE-HO-C6-N_2013.12.
Photo 091 Fastening with Bearing Gland
Chapter 5 Maintenance
5.7 Reassembly