freightliner 122SD, Maintenance Manual

Page: 113 / 132

1. Shut down the engine, apply the parking brake,
and chock the tires.
2. Check the fuel level in the fuel filter. Replace the
fuel/water separator element
only when the filter
element is completely covered. If the fuel level
has reached the top of the filter element, follow
the procedure below to replace the element.
NOTE: In the event of an emergency, when the
filter needs replacement but a Davco filter is not
available for the Fuel Pro 382, a temporary filter
can be used; see the procedure under the
heading "Emergency Temporary Filter Replace-
ment, Fuel Pro 382."
3. Put a clean receptacle under the fuel/water sepa-
rator and attach a piece of hose to the drain
valve, to direct fuel into the receptacle.
The drain valve has a 1/2-inch (12.7-mm) pipe;
use a hose with a 1/2-inch pipe thread to fit cor-
rectly.
4. Remove the vent cap ( Fig. 2 , Item 4) and open
the drain valve ( Fig. 2 , Item 1) to drain the fuel
completely, then close the drain valve.
5. Using a DAVCO Collar Wrench ( Fig. 3 ), remove
the clear cover and collar.
NOTE: Broken vent cap and collar warranty
claims will not be accepted if any tool other than
a DAVCO Collar Wrench is used for removal.
During installation, the vent cap and collar are
5
4
3
1
2
06/25/97 f470147
6
7
11
10
9
8
1. Mounting Head
2. Fuel Primer Pump
3. Vent Plug
4. Bowl O-Ring
5. Bowl Gasket
6. Bowl Probe Plug
7. Water Sensor Probe
8. Heater Connector
9. Drain Plug
10. Sight Bowl
11. Filter Element
Fig. 1, Alliance Fuel/Water Separator
f470506b 05/05/2009
4
1
3
5
2
6
1. Drain Valve
2. Lower Housing
3. Clear Cover
4. Vent Cap
5. Collar
6. Inlet Port/Check Valve
Fig. 2, DAVCO Fuel/Water Separator (Fuel Pro 382
Shown)
02/16/2009 f470277
VENT CAP
FOR REMOVAL OF TOP COLLAR ONLY
Fig. 3, DAVCO Collar Wrench
Fuel
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122SD and Coronado 132 Maintenance Manual, February 2016
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