2202G1JE-DA-M-N_2010.01.
7 Related Document
Reciprocating Compressor M Series
7.7 Parts Inspection and Replacement Standards
7-32
Cylinder
sleeve
1.
Inspect the surface of the suction valve seat on the top of cylinder sleeve for scratches.
If there are scratches on the surface of the valve seat, repair them by lapping.
2.
Measure the height of the valve seat section. (Refer to Fig. 7-12)
If the height of the valve seat section exceeds the usage limit, replace the cylinder sleeve.
Measurement point
Standard
dimensions (mm)
Usage limit (mm)
Height of valve seat section of cylinder sleeve:
A
0.5 0.2
3.
Inspect the inner surface of the cylinder sleeve for scratches.
If scratches are found in the inner surface, repair it by using a smooth grinding stone.
4.
Measure the inner diameter of the cylinder.
If the inner diameter of the cylinder exceeds the usage limit, replace the cylinder sleeve.
The section 5—7 mm from the top of the inner surface of the cylinder sleeve is the section most
worn.
Measurement point
Standard
dimensions (mm)
Usage limit (mm)
Inner diameter of the cylinder
146 146.2
Discharge Valve (Assembly)/ Suction Valve (Assembly)
1.
Replace the discharge plate valve, suction plate valve, and valve spring periodically. The endurance time
depends on the use condition.
Measure the depth of the wear at the contact surface to valve seat. (Refer to Fig. 7-12)
If the contact surface to valve seat is worn for 0.15 mm or more, replace the discharge plate valve, suction
plate valve, and valve spring.
Measurement point
Standard
dimensions (mm)
Wear limit (mm)
Depth of the wear at the contact surface to valve
seat of discharge plate valve:
B
Depth of the wear at the contact surface to valve
seat of suction plate valve :
C
— 0.15
2.
Inspect the surface of the inner/outer periphery of the discharge plate valve and suction plate valve for
scratches.
If there are scratches on the surface of the inner/outer periphery, replace the discharge plate valve and
suction plate valve.
Though wear of contact surface to valve seat of the discharge plate valve and suction plate valve
are within the wear limit, if there are scratches on the surface of inner/outer periphery, fatigue
crack on the valves may result.
3.
Measure the height of the valve seat section of valve plate and discharge valve seat. (Refer to Fig. 7-12)
If the height of the valve seat section becomes 0.15 mm or less, replace the valve plate and the discharge
valve seat.
Measurement point
Standard
dimensions (mm)
Usage limit (mm)
Height of the discharge valve seat:
D
Height of the valve plate seat:
E
0.5 0.15