183
Maintenance
7
50 HOUR MAIN SERVICE
WARNING: To open the bonnet, follow the procedure indicated under “How to open the bonnet”.
WARNING: Always use specific personal safety devices for each operation. Beware of burns caused by hot water
and engine parts. [4.1.n]
Engine air filter discharge valve
(ifequipped).
Discharge the dust deposits and sediments each day
bypressingtherubbervalve(1)ontheairfilterhousing.
Install a new dust valve if damaged, or not operating
correctly.
NOTE: The discharge valve is not available if an auto-
matic dust ejector is fitted.
IMPORTANT: A new rubber dust valve MUST be installed
every 1000 hours.
Dry air filter outer cartridge
WARNING: Always stop the engine before
demounting the filter elements.
Periodically,removethecover(2)(Pullouttheyellowtab
(1),turnthecover(2)anti-clockwiseandremove),takeout
theexternalcartridge(3)fromthecontainer(4)andclean
it(thisoperationshouldbecarriedoutmorefrequently
ifyouworkinaverydustyenvironmentortheindicator
ontheinstrumentpanellightsup).DONOTremovethe
innercartridge(4).
Seetheprocedurefordisassembling,cleaningandre-
placingofthecartridgesofthedryairfilterintheRegular
Serviceat1000workhoursinthissectionofthemanual.
1
2
5
4
3