Chrysler DODGE D150 1993 Service Manual page 1496

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EMISSION CONTROL SYSTEMS 25 - 19
EGR VALVE
REMOVAL
The EGR valve and the electric EGR transducer
(EET) are serviced as one unit.
(1) Disconnect vacuum hose to EGR valve/trans­
ducer assembly. Note position of hoses on EGR valve
and transducer for easier installation.
(2) Remove EGR mounting bolts (Fig. 5).
Fig. 5 EGR Valve Mounting Bolts
(3) Remove EGR valve and gasket. Discard old
gasket. Clean intake manifold mating surface and
check for cracks.
INSTALLATION
(1) Place new EGR gasket on intake manifold.
(2) Install EGR valve. Tighten mounting bolts to
23 N*m (200 in. lbs.) torque.
(3) Connect vacuum hose to valve/transducer as­
sembly.
EGR T U B E - G A S POWERED ENGINES
REMOVAL
(1) Remove air filter housing.
(2) Remove the spark plug cable loom and plug ca­
bles from valve cover mounting stud at rear of right
valve cover. Position spark plug cables to top of valve
cover.
(3) Disconnect two vacuum hoses at exhaust gas
recirculation (EGR) valve.
(4) Remove 2 EGR valve mounting bolts (Fig. 5)
and remove EGR valve. Discard old gasket.
(5) Disconnect electrical connector at engine oil
pressure sending unit.
(6) To prevent damage to oil pressure sending unit,
a special tool, such as number C-4597 must be used
(Fig. 6). Remove sending unit from engine.
(7) Loosen EGR tube mounting n u t at intake man­
ifold (Fig. 7).
Fig. 6 Oil Pressure Sending Unit—Removal/Installation
Fig. 7 EGR Tube—Typical
(8) Remove EGR tube mounting bolts at exhaust
manifold (Fig. 7) and remove EGR tube.
INSTALLATION
(1) Clean the EGR tube and exhaust manifold (at
EGR tube mounting point) of any old gasket mate­
rial.
(2) Install a new gasket to exhaust manifold end of
EGR tube.
(3) Install EGR tube to both manifolds. Tighten
mounting nut at intake manifold. Tighten two
mounting bolts at exhaust manifold to 23 N»m (204
in. lbs.) torque.
(4) Coat the threads of the oil pressure sending
unit with thread sealant. Do not allow any of the
thread sealant to get into the sending unit opening
or the opening at the engine. Install sending unit to