John Deere CD4039DF008 - Manual (Page 67)

Maintenance/As required
DPSG,CD03523,28 –19–12JUL99–1/1
CHECKING FUEL FILTER
RG9868
–
UN–15JAN99
RG8013B
–UN–15JAN99
Periodically the fuel filter should be checked for water or
debris.
IMPORTANT: Drain water into a suitable container
and dispose of properly.
1. Loosen drain plug (B) at bottom of fuel filter two or
three turns.
2. Loosen air bleed plug two full turns (A) on fuel filter
base and drain water from bottom until fuel starts to
drain out.
3. When fuel starts to drain out, tighten drain plug
securely.
4. After draining water from the fuel filter, the filter must
be primed by bleeding all air from the fuel system.
Operate primer lever of the fuel supply pump (C) until
fuel flow is free from air bubbles.
5. Tighten bleed plug securely, continue operating hand
primer until pumping action is not felt. Push hand
primer inward (toward engine) as far as it will go.
If the fuel system needs further bleeding of air, see
BLEEDING THE FUEL SYSTEM.
50-5
112699
PN=67