Reciprocating Compressor M Series
5-30
5.5.7.1 Removing the Main Bearing Head Assembly
z The main bearing head assembly weighs 50 kg(110.3 lbs). Handling it
inappropriately may cause injury. Remove the main bearing head assembly in an
appropriate manner with at least one other person.
z Dropping of the main bearing head assembly may cause injury or damage to the
compressor. Always attach the stud bolts before performing the work.
z To remove the main bearing head assembly, insert the main bearing head assembly screws into
the service holes and tighten them. (There are two holes diagonally.)
1. Remove the two main bearing head bolts from the
top, and attach the stud bolts (a).
5.5.7.2 Assembly of the Main Bearing Head Gasket
1. Align the bolt and oil holes on the main bearing head gasket with those on the crankcase.
5.5.7.3 Assembly of the Main Bearing Head Assembly
z The main bearing head assembly weighs 50 kg(110.3 lbs). Handling it
inappropriately may cause injury. Attach the main bearing head assembly in an
appropriate manner with at least one other person.
z Dropping of the main bearing head assembly may cause injury or damage to the
compressor. Always attach the stud bolts before performing the work.
1. Attach the stud bolts, and then attach the main
bearing head.
2. After temporarily tightening the main bearing
head hexagon head bolts, remove the stud bolts.
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