THDC / THDCP 954 / 955 / 974 (Re 06/03)THDC / THDCP 954 / 955 / 974 (Re 06/03)
2 22 2
cooled. cooled. Fuel is ciFuel is circulated thrrculated through its tubes andough its tubes and
the engine fan circulates air across the cooler andthe engine fan circulates air across the cooler and
through the fins, cooling the fuel before it returnsthrough the fins, cooling the fuel before it returns
to the fuel tank.to the fuel tank.
ChangChanging the ing the Fuel / Fuel / WatWater er SeparatoSeparator r FilterFilterss
(Illustration 2-2)(Illustration 2-2).. With the engine shut down, per-With the engine shut down, per-
form the following procedures to replace the fuel /form the following procedures to replace the fuel /
water separwater separator filtator filters. ers. They should be changedThey should be changed
every 250 hours or more often if conditions war-every 250 hours or more often if conditions war-
rant.rant.
CAUTIONS:CAUTIONS:
SS
Dispose of used fuel / water separator filtersDispose of used fuel / water separator filters
and drained fuel in accordance to federaland drained fuel in accordance to federal
and local and local regulatregulations.ions.
SS
Mechanical tigMechanical tightenihtening of the fuel / ng of the fuel / waterwater
separator filter may result in seal and / orseparator filter may result in seal and / or
cartridcartridge damage. ge damage. TigTighten the fuhten the fuel / waterel / water
separator filter by hand only.separator filter by hand only.
1. 1. ProvProvide a suitaide a suitable contble containeainer to catch drar to catch drainedined
fuel and use a strap wrench to remove the fuelfuel and use a strap wrench to remove the fuel
/ / water water separator separator filters filters from from the the filter filter base.base.
2. 2. CleClean the arean the area arouna around the fild the filter heter heads.ads.
3. 3. RemRemove the fuel fiove the fuel filter thlter thread adapread adapter seater sealinlingg
rings.rings.
4. 4. CleClean the gaskan the gasket suret surface of thface of the fuel fie fuel filter hlter headead
with a lint free cloth.with a lint free cloth.
5. 5. InstInstall the neall the new threaw thread adapter sd adapter sealiealing ringng rings ons on
the fuel filter head.the fuel filter head.
6. 6. Fill new Fill new filterfilters with cs with clean fuel and llean fuel and lubricate tubricate thehe
filter seals with clean oil.filter seals with clean oil.
7. 7. InstInstall fiall filterlters and tightes and tighten them 1/2 turn aftn them 1/2 turn after theer the
seals contact the filter head surface.seals contact the filter head surface.
General InformationGeneral Information
FFuueel l CCaappaacciitty y 22440 0 GGaalllloonnss
Draining The Fuel / Water Separator FiltersDraining The Fuel / Water Separator Filters
(Illustration 2-2)(Illustration 2-2).. The fuel / water separator filtersThe fuel / water separator filters
should be drained daily to remove water and sedi-should be drained daily to remove water and sedi-
ments frments from the fuel. om the fuel. Perform tPerform the followihe following proce-ng proce-
dures to drain the water from the fuel / water sep-dures to drain the water from the fuel / water sep-
arator filters.arator filters.
CAUTIONS:CAUTIONS:
SS
Dispose of drained fuDispose of drained fuel in accordance toel in accordance to
federal and federal and local regulationlocal regulations.s.
SS
Do not oDo not overtighvertighten the dten the drain valve. rain valve. OvertigOvertigh-h-
tening may cause thread damage.tening may cause thread damage.
1. 1. Provide Provide a suita suitable contable container to ainer to catch catch draineddrained
water and open the drain valve approximatelywater and open the drain valve approximately
1-1/2 to 2 turns until dr1-1/2 to 2 turns until draining occuraining occurs. s. DrainDrain
each fuel / water separator filter of water untileach fuel / water separator filter of water until
clear fuel is visible.clear fuel is visible.
2. 2. Once thOnce the watee water has drr has draineained, turd, turn the valn the valveve
clockwise to close the drain valve.clockwise to close the drain valve.
FUEL / WATERFUEL / WATER
SEPARATORSSEPARATORS
ADAPTERADAPTER
SEALINGSEALING
RINGSRINGS
ADAPTERADAPTER
IllustIllustration 2-2. ration 2-2. Fuel / WFuel / Water Separator Filater Separator Filtersters
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