2006 DODGE RAM SRT-10 Service Repair Manual

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Page 2345 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual DESCRIPTION N-m Ft. Lbs. In. Lbs.
Fuel Line Fittings
(High-Pressure - Pump to
Rail)37 27 -
Fuel Line Fittings
(High-Pressure - Cylinder
Head to Rail)30 22 -
#6 Fuel Line Shield Bolts 43 32 -
Fuel Inje

Page 2346 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual SPECIAL TOOLS
DIESELFUELSYSTEM
FUEL PRESSURE TEST ADAPTER - # 9012
FUEL PRESSURE TEST ADAPTER - #9014
FUEL INJECTOR REMOVER - #9010
PRESSURE CAP - #9011
FUEL PRESSURE TEST ADAPTER - #9013
FUEL INJECTO

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DODGE RAM SRT-10 2006 Service Repair Manual ENGINE ROTATING (BARRING) TOOL - #7471B
(ALSOPARTOFKIT#6860)

Page 2348 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual FILTER - FUEL / WATER SEPARATOR
DESCRIPTION
The fuel filter/water separator assembly is located on left side of engineabove the starter motor. The assembly also
includes the fuel heater, Water-In-Fuel

FILTER - FUEL / WATER SEPARATOR
DESCRIPTION
The fuel filter/water separator assembly is located on left side of engineabove the starter motor. The assembly also
includes the fuel heater, Water-In-Fuel (WIF) sensor and a screened banjobolt attached at the bottom of the fuel
filter canister.
OPERATION
The fuel filter/water separator protects the fuel injection pump by removing water and contaminants from the fuel.
The construction of the filter/separator allows fuel to pass through it, but helps prevent moisture (water) from doing
so. Moisture collects at the bottom of the canister.
Refer to the maintenance schedules in the owners manual for the recommended fuel filter replacement intervals.
For draining of water from canister, refer to Fuel Filter/Water SeparatorRemoval/Installation section.
There is a screened banjo bolt that is attached at the bottom of the fuel filter canister. It provides additional filtering
for the high pressure fuel system components.
A Water-In-Fuel (WIF) sensor is attached to the side of fuel filter housing. Refer to Water-In-Fuel Sensor Descrip-
tion/Operation.
The fuel heater is installed into the top of the filter/separator housing.Refer to Fuel Heater Description/Operation.
REMOVAL
Refer to maintenance schedules in this manual, or the
Owner’s Manual for recommended fuel filter replace-
ment intervals.
Draining water from fuel filter/water separator
housing:
The housing drain valve (9) serves two purposes. One
is topartiallydrain the filter housing of excess water.
The other is tocompletelydrain the housing for fuel
filter, drain valve, heater element or water-in-fuel sen-
sor replacement.
The filter housing should be partially drained when-
ever the water-in-fuel warning lamp remains illumi-
nated. (Note that lamp will be illuminated for
approximately two seconds when ignition key is ini-
tially placed in ON position for a bulb check).
1. A drain hose (7) is located at the bottom of drain
valve. Place drain pan under drain hose.
2.With engine not running,rotate drain valve han-
dle counter-clockwise (rearward) to OPEN (DRAIN)
position. Hold drain valve open until all water and
contaminants have been removed and clean fuel
exits.
3. If drain valve, fuel heater element or Water-In-Fuel (WIF) sensor is being replaced, drain housing completely.
Dispose of mixture in drain pan according to applicable regulations.
4. After draining operation, rotate valve handle clockwise (forward) to the CLOSE position.

Page 2349 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual 5.Fuel Filter Replacement:The fuel filter is located
inside of the fuel filter housing.
a. Clean all debris from around canister.
b. Remove filter lid (1) using a socket. Attach
socket to large hex (2

Page 2350 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual 7.Fuel Heater Element Replacement:The heater
element (2) is located in the fuel filter housing.
a. Remove fuel filter. See previous steps.
b. Disconnect electrical connector.
c. Remove two T-15 Torx h

Page 2351 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual a. Install new o-ring seal to WIF sensor.
b. Apply a light film of clean oil to o-ring seal.
c. Install sensor into housing.
d. Tighten sensor to 2.5 Nꞏm (25 in. lbs.) torque.
e. Connect electrical

Page 2352 of 5267

DODGE RAM SRT-10 2006 Service Repair Manual HEATER-FUEL
DESCRIPTION
The fuel heater assembly is located on the side of the fuel filter housing and internal to the fuel filter housing .
The heater/element assembly is equipped with a temperature

HEATER-FUEL
DESCRIPTION
The fuel heater assembly is located on the side of the fuel filter housing and internal to the fuel filter housing .
The heater/element assembly is equipped with a temperature sensor (thermostat) that senses fuel temperature. This
sensor is attached to the fuel heater/element assembly.
OPERATION
The fuel heater is used to prevent diesel fuel from waxing during cold weather operation.
When the fuel temperature is below 45° ±8 F (7°C), the temperature sensor allows current to flow to the heater
element warming the fuel. When the fuel temperature is above 75° ±8 F (24°C), the sensor stops current flow to the
heater element.
Battery voltage to operate the fuel heater element is supplied from the ignition switch and through a solid stated
device in the IPM.The fuel heater element and
solid state device in IPMinstead offuel heater relayare not
computer controlled.
The heater element operates on 12 volts, 300 watts at 0° F (-18° C).
DIAGNOSIS AND TESTING
FUEL HEATER
The fuel heater is used to prevent diesel fuel from waxing during cold weather operation.
NOTE: The fuel heater element,
solid state device in IPMinstead offuel heater relayand fuel heater tem-
perature sensor are not controlled by the Engine Control Module (ECM).
A malfunctioning fuel heater can cause a wax build-up in the fuel filter/water separator. Wax build-up in the filter/
separator can cause engine starting problems and prevent the engine from revving up. It can also cause blue or
white fog-like exhaust. If the heater is not operating in cold temperatures, the engine may not operate due to fuel
waxing.
The fuel heater assembly is located on the side of fuel filter housing and internal to the fuel filter housing.
The heater assembly is equipped with a built-in fuel temperature sensor (thermostat) that senses fuel temperature.
When fuel temperature drops below 45° ± 8° F (7° C), the sensor allows current to flow to built-in heater element
to warm fuel. When fuel temperature rises above 75 °± 8° F (24° C), the sensorstops current flow to heater ele-
ment (circuit is open).
Voltage to operate fuel heater element is supplied from ignition switch, through
solid state device in IPM,tofuel
temperature sensor and on to fuel heater element.
The heater element operates on 12 volts, 300 watts at 0 °F (-18° C). As temperature increases, power requirements
decrease.
A minimum of 7 volts is required to operate the fuel heater. The resistance value of the heater element is less than
1 ohm (cold) and up to 1000 ohms warm.
TESTING
1. Disconnect electrical connector from thermostat.
Ambient temperature must be below the circuit close temperature. If necessary, induce this ambient temperature by
placing ice packs on thermostat to produce an effective ambient temperature below circuit close temperature.
Measure resistance across two pins. Operating range is 0.3 - 0.45 Ohms.
2. If resistance is out of range, remove thermostat and check resistance across terminal connections of heater. The
heater can be checked at room temperature. Operating range is 0.3 - 0.45 Ohms.
3. Replace heater if resistance is not within operating range.
4. If heater is within operating range, replace heater thermostat.

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