2-18 PERIODIC MAINTENANCE
WATER PUMP / WATER PUMP IMPELLER
WATER PUMP
Inspect every 200 hours (12 months).
Inspect case and under panel.
Replace If wear, cracks, distortion or corrosion is found.
WATER PUMP IMPELLER
Replace every 200 hours (12 months).
Inspect water pump impeller.
Replace if vanes are cut, torn or worn.
PROPELLER / NUT / COTTER PIN
Inspect initially after 20 hours (1 month) and every 100
hours (6 months) thereafter.
• Inspect the propeller for bent ,chipped or broken blades.
Replace propeller if damage noticeably affects operation.
• Inspect propeller splines. Replace propeller if splines are
worn or damaged.
• Inspect propeller bush for slippage.
Replace if necessary.
• Make sure the propeller nut is torqued to specification and
cotter pin is installed securely.
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