2202G1JE-DA-M-N_2010.01.
7 Related Document
Reciprocating Compressor M Series
7.7 Parts Inspection and Replacement Standards
7-31
7.7 Parts Inspection and Replacement Standards
Suction Filter/ Oil Strainer/ Oil Filter
1.
When cleaning the metallic mesh, inspect if the meshes are torn or soldered part is separated.
If defects are found, always repair or replace it with a new one.
Special flux must be used for soldering stainless steel parts.
2.
If plugs the fine net and cannot be cleaned, blow the dust off with the compressed air from the direction
opposite of the fluid flow.
3.
Suction filter/oil strainer is a cylindrical shaped filter with plicate which has a large pass area. If the filter is
clogged, blow it off with the compressed air from inside.
4.
If the oil filter is clogged, replace it.
Crankshaft
1.
Inspect each bearing axes of the crankshaft for wear.
If it is worn, the sliding section and non-sliding section of the bearing axis will become uneven. Inspect
visually and by touching it with your hand.
Measure the diameter of each bearing axis at the worn part using a macro meter.
If the diameter is below the usage limit, replace the crankshaft.
Measurement point
Standard
dimensions (mm)
Usage limit (mm)
Diameter of main bearing
110 109.88
Diameter of thrust bearing
125 124.86
Diameter of crank pin
107 106.85
2.
Inspect each sliding section of the crankshaft for scratches.
If scratches are found, repair it by using sandpaper (#800 or more) or a grinding stone.
3.
Remove all the plugs attached to the crankshaft and clean the oil holes.
After cleaning the oil holes, check that the oil flows properly.
Reattach the plugs immediately after checking the oil holes. If the plugs are not replaced damage to the
crankshaft will occur.
4.
Inspect the mechanical seal attachment section of the crankshaft for scratches.
If scratches are found, repair it by using sandpaper (#800 or more) or an oilstone.
Connecting
Rod
1.
Inspect the surface of the bearing halves assembled to the large end of the connecting rod for foreign
materials.
If there are foreign materials on the surface of the bearing halves, replace them.
2.
Measure the thickness of the center part of the bearing halves.
If the thickness is below the usage limit, replace the bearing halves.
Measurement point
Standard
dimensions (mm)
Usage limit (mm)
Thickness of the center part of the bearing
halves
2.5 2.34
3.
Measure the inner diameter of the shaft hole at the small end of the connecting rod.
If the inner diameter of the shaft hole exceeds the usage limit, replace the connecting rod bushings.
Measurement point
Standard
dimensions (mm)
Usage limit (mm)
Inner diameter of the shaft hole at the small end
of the connecting rod
45 45.1
