Operation and Maintenance Manual SC9DF Electronically Controlled Diesel Engine for Agricultural Equipment
47
Check inlet valve of air compressor
Warning: Press unloading valve body down when
dismantling the screws on the unloading valve body,
otherwise, the unloading valve spring has been suddenly
released will upspring, hurting people.
Carefully check the unloading valve to see whether there is
carbon deposit, and if so, remove and clean them. Check the
air compressor cylinder head and inlet/outlet valve
components, and replace relevant components if necessary.
It is allowed to install a new-seal ring on the unloading valve
body and a new Y-ring into its bore if the unloading valve clean
or there is light carbon deposit.
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