PERIODIC MAINTENANCE5-32 TNV DI Service ManualPeriodic Maintenance Procedures6. Replace the element with a new one if theelement is damaged, excessively dirty or oily.7. Clean inside of the air cleaner cover.8. Install the element into the air cleaner case(Figure 5-12, (4)).9. Reinstall the air cleaner cover making sure youmatch the arrow (Figure 5-12, (5)) on the coverwith the arrow on the case (Figure 5-12, (6)).10. Latch the air cleaner cover to the case.Perform the following maintenance every 500 hoursof operation.• Replace Air Cleaner Element• Replace Fuel Filter• Clean Fuel Filter / Water SeparatorReplace Air Cleaner ElementReplace the air cleaner element (Figure 5-12, (2))every 500 hours even if it is not damaged or dirty.When replacing the element, clean the inside of theair cleaner case (Figure 5-12, (4)).If the air cleaner is equipped with a double element,only remove and replace the inner element(Figure 5-13, (1)) if the engine lacks power or thedust indicator actuates (if equipped). This is inaddition to replacing the outer element.CAUTION• When the engine is operated in dustyconditions, clean the air cleanerelement more frequently.• NEVER operate the engine with the aircleaner element(s) removed. This mayallow foreign material to enter theengine and damage it.0000026enEvery 500 Hours of OperationCAUTIONThe maximum air intake restriction, interms of differential pressuremeasurement, must not exceed 0.90 psi(6.23 kPa; 635 mmAq). Clean or replacethe air cleaner element if the air intakerestriction exceeds the abovementioned value.0000046en
