MAINTENANCE AND SERVICING
Form 169552 / 169554 / 169555
134
Revision A
Change both filters as follows every 500 hours
of operation:
a. Close fuel supply valve (E) under fuel tank.
b. Change primary filter (C) as follows:
1. Clean around the filter head (F).
2. Disconnect Water In Fuel (WIF) sensor (G)
from bottom of filter.
3. Turn drain valve (H) by hand counter
clockwise until draining occurs, and drain
filter into a container.
4. Remove filter (C) with a filter wrench.
5. Clean gasket mating surface.
IMPORTANT
Do not pre-fill filter with fuel. Pre-filling
can contaminate the fuel system.
6. Screw the new filter (C) onto the filter mount
until the gasket contacts the filter head.
7. Reconnect WIF (Water In Fuel) sensor (G).
8. Hand-tighten the filter an additional ½ to ¾
turn.
IMPORTANT
Do not use a filter wrench to install the
filter. Over-tightening can damage the
gasket and filter.
c. Change secondary filter (D) as follows:
1. Clean around the filter head (J).
2. Place a container under the filter to catch
spilled fluid.
3. Remove filter (D) with a filter wrench.
4. Clean gasket mating surface.
IMPORTANT
Do not pre-fill filter with fuel. Pre-filling
can contaminate the fuel system.
5. Screw the new filter onto the filter mount
until the gasket contacts the filter head.
6. Hand-tighten the filter an additional ½ to ¾
turn.
IMPORTANT
Do not use a filter wrench to install the
filter. Over-tightening can damage the
gasket and filter.
d. Open fuel valve (E) under fuel tank.
e. Prime the system. Refer to Section 7.8.6.5
System Priming.
f. Close engine compartment hood.
E
F
G
H
C
D
J
E