Fuel System
CAUTION:
H98377-UN-30SEP10
Fuel Precleaner Bowl (All Machines)
A - Precleaner Bowl
Shut OFF engine, set parking brake and remove key before performing maintenance work on fuel filters.NOTE: Make sure that precleaner bowl is fully seated to prevent air from entering the fuel system.
Close fuel shut off valve on fuel tank.
Remove precleaner bowl (A) and clean screen if dirty fuel was used.
S660 and S670 (Tier 2/Stage II)
H104937-UN-28FEB12
A - Drain
B - Primary Fuel Filter
C - Drain
D - Secondary Fuel Filter
Open drain (A) to inspect fuel system for water in primary filter (B), (see Service Engine section).Open drain (C) to inspect fuel system for water in secondary filter (D), (see Service Engine section).
If problem persists change fuel filters, (see Service Engine section).
S680 and S690 (Tier 2/Stage II)
H104938-UN-28FEB12
A - Drain
B - Primary Fuel Filter
Open drain (A) to inspect fuel system for water in primary filter (B), (see Service Engine section).If problem persists change fuel filters, (see Service Engine section).
S660, S670, S680 and S690 (Interim Tier 4/Stage III B)
H104939-UN-28FEB12
S660 and S670
H104940-UN-28FEB12
S680 and S690
A - Drain
B - Primary Fuel Filter
Open drain (A) to inspect fuel system for water in primary filter (B), (see Service Engine section).If dirty fuel was used replace filter, (see Service Engine section).
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