2202G1JE-DA-M-N_2010.01.
5 Maintenance
Reciprocating Compressor M Series
5.5 Disassembly/Assembly
5-38
5.5.8.1 Attentions for Removing the Crankshaft
The crankshaft weighs approx. 140 kg. Handling it inappropriately may cause
injury. Remove the crankshaft in an appropriate manner with at least two other
people.
1.
Affix curing tape onto the attachment surface of
the crankshaft flywheel so that it is not scratched.
2.
Attach the coupling rods (a) (or M20 bolts with a
sufficient length) into the screw holes at both ends
of the crankshaft axis.
Use the bolts (M27 with fine pitch) on the
seal cover for 62M-FM.
3.
Rotate the crankshaft so that the crankshaft
balancer at the seal cover side is positioned at the
bottom.
4.
Lift the crankshaft by holding the coupling rods
(a) (or bolts with a sufficient length) that are
attached in Step 2.
5.
Pull out the crankshaft until the crankshaft balance
weight (b) at the seal cover side comes to the
position of the main bearing head assembly
attachment flange on the crankcase.
6.
Lower the crankshaft so that the crankshaft
balance weight (b) at the seal cover side is
properly placed onto the main bearing head
assembly attachment flange on the crankcase.
7.
Lift the crankshaft to pull it out from the
crankcase by holding the coupling rods (a) (or
bolts with a sufficient length) that are attached in
Step 2 and the block (c).
Support the bearing axis of the removed
crankshaft using a V-shaped wooden block
so that it is not scratched.
