2202L5JE-DA-C5-N_2015.05.
5 Maintenance and Inspection
Compound 2-stage Screw Compressor 5.5 Reassembly
1612LSC Speed Increaser Type
5-49
c) When assembling the low-stage side, slide the suction cover on the work bench to move it to the
assembly location (above picture to the left). When assembling the high-stage side, use a lifting tool
shown in above picture to the right or put a stand witch adjusted height.
When fitting the side bearing and the rotor shaft, be careful not to let the end of the rotor shaft
damage the metal on the inner surface of the side bearing.
d) When the rotor shaft has entered the side bearing, push the suction cover parallel with the axis to
assemble.
e) First, screw two hexagon socket head cap screws [2] and fasten them temporarily. Then drive
alignment pins [3] into the suction cover for positioning, and tighten the fastening screws [2] evenly.
The six screws on the lower side should be tightened during final assembly on the special stand
used at disassembling.
f) Rotate the M rotor shaft with your hand and check that there is no abnormality is in meshing of the
rotors.
g) For the low-stage, attach the O-ring on the oil injection pipe [85].Then, in the same way of the
disassembly; screw a hexagon socket head cap screw [2-1] into the threaded hole on the oil
injection pipe, and push the oil injection pipe into the low-stage suction cover.
h) Next, install the oil injection pipe gland [164] with attaching the O-ring [165] and fasten it with four
hexagon socket head cap screws [166].
h) Move the unloader push rod with your hand and check the smoothly movement of the unloader
slide valve.
i) While holding the M rotor shaft move it in the axis direction and check that there is allowance.
j) For the high-stage, assemble the balance piston and secure with an external snap ring. Check that
it is in the groove.
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