2200LZJE-HO-C6-N_2013.12.
Chapter 5 Maintenance
Compound 2-stage Screw Compressor 2016**C 5.7 Reassembly
5-54
d) Screw stud bolts into two of the upper holes provided in
the low-stage flange surface which is to be attached to the
high-stage.
e) Apply oil to the both surfaces of the bearing cover gasket
(2) 【17-2】. Attach the gasket on the flange surface over
the stud bolts.
f) Lift the high-stage by using lifting tools until it is slightly off
the surface plate, and move it toward the low-stage.
At this moment, on the low-stage, slightly move the M
rotor shaft in both directions, so that the gear coupling
assembly will fit smoothly.
g) After the gear coupling is assembled, press the high-
stage parallel with the rotor shaft. For both upper and
lower sides, gradually and evenly tighten, temporarily,
the hexagon socket head cap screws 【18-2】 that are
set in the bolt holes, each hole located one hole apart from the left or right alignment pin, until the
high-stage and low-stage flange surfaces come into contact.
h) After the flange surfaces come into contact, slightly loosen the four hexagon socket head cap
screws, which have been temporarily tightened, and then drive in the left and right alignment pins.
i) Tighten the hexagon socket head cap screws to the specified torque (240 N·m). The lower bolts
should be tightened on the special table, which was used during disassembly.
j) Turn the low-stage M rotor (use of a jig for rotating the rotor is helpful), and check that it rotates
properly.
Photo 099 Attaching High-stage and Low-stage
Photo 098 Attaching the Gasket onto
the Low-Stage Flange Surface
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