MMD Equipment 185S-6C1 - Manual (Page 53)

5. Periodic Inspection/Maintenance
5-16
5.5.23 Check Pressure Control Valve O-Ring and Piston
Disassemble and clean the component, and check O-ring“1”,“2” and the piston“4” shown in
5.5.22 Then, replace O-ring“1”,“2” and rubber on the piston“4”, if they are hardened.
（See 5.4）
Ask your nearest dealer for its replacement.
After replacement, run the machine to check its function (See 5.5.22), air-leak or any disorder.
5.5.24 Change Radiator Hoses
[3,000 hours or every 3 years ]
When any crack or wear is found on the hoses, change it even before the scheduled time.
Replacement of the radiator hoses requires expert technical knowledge. So contact directly us or
distributor.