2205Q2JE-HO-S6-N_2020.01.
Chapter 5 Maintenance and Inspection
SCV-series Screw Compressor 5.5 Reassembly
5-51
d) Install the oil seal retainer with the oil seal and sleeve (in case of 160V** models, install the oil seal
retainer with the oil seal) along the rotor shaft using two M8 eye bolts. At this time, position the oil
escape hole of the oil seal retainer on the upper side of the rotor shaft, and accurately align the
notch in the retainer with the position of the spring pin [20] that is driven in into the bearing cover to
prevent its rotation.
After the installation, check that it is securely fixed by trying to rotate the retainer with the eye bolts.
If the position is correct, the retainer will not rotate.
e) Secure the oil seal sleeve using two set screws [529] on the rotor shaft.
f) Then, insert the O-ring [49] for the oil seal retainer (following picture to the left).
You should be particularly careful on this point, as the O-ring [49] for the seal retainer
is often forgotten to be installed.
g) Insert the O-ring [112] on the inner circumference of the seal collar [109], and install the seal collar
on the rotor shaft. Before the assembly, apply sufficient lubricating oil onto the rotor shaft and the
seal in such a way to wash out dust and stains. Push in the O-ring [112] carefully not to damage it by
the step on the rotor shaft (following picture to the left).
h) Fasten the seal collar on the rotor shaft by screwing the two seal collar set screws [111] at the
countersinks on the rotor shaft (following picture to the middle and the right). Failing to fasten the
screws at the countersink positions will damage the rotor shaft, and it can cause a leakage.
Fastening the set screws for the 160V** models seal collar using the machining hole of
the bearing cover (see the white arrow part in the picture above to the right) . After
fastening the set screws, do not forget fitting the plug.
i) Install the O-ring [103] for the mating ring and the
mating ring [101] on the seal cover [51] (right picture).
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