MMD Equipment 185S-5C2 part 2 - Manual (Page 14)

5. Periodic Inspection/Maintenance
5-14
5.5.18 Change Fuel rubber hose
[2,000 hours or every 2 years]
 In case various rubber hoses for fuel system and engine lubrication system are hardened or
deteriorated, replace them even before the specified replacement time.
 Replacement of the fuel rubber hoses requires expert technical knowledge. So contact directly us or
distributor.
5.5.19 Change Pressure Regulator
[Every 3,000 hours]
 Remove pressure regulator and replace with a new unit. (See 5.4)
5.5.20 Change O-Ring of Unloader
[3,000 hours or every 3 years]

When reassembling, apply sufficient grease to O-ring Slot/O-ring and sliding surface.
Use CALTEX MULTIFAK EP1 grease or equivalent. Grease of poor quality will deteriorate the material.
(Caution during O-ring replacement)
Supply grease to O-ring“1”,“2”,“3”,“4”after
replacement. (See 5.4)
 Replacement of O-ring requires expert technical
knowledge. So contact directly us or distributor.
5.5.21 Check Hoses
[3,000 hours or every 3 years]
 Check hoses used for oil piping for any crack or tear, and replace when an abnormality is found.
 Replacement of the hoses requires expert technical knowledge. So contact directly us or distributor.
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