1993 DODGE TRUCK fuel filter

•

EMISSION
CONTROL SYSTEMS
25 - 17
COMPONENT REMOVAL/INSTALLATION

INDEI

page

Air
Filter/Filter
Housing—Diesel Engines
17

Air
Filter/Filter
Housing—Gas Engines
17

Air
Injection
Pump
17

Air
Injection
Pump Relief Valve
18
Check
Valve—Air
Injection
Tube
18

Coolant Temperature
Sensor
. 18
EGR
Tube—Gas Powered Engines
19

EGR
Valve
19

AIR FILTER/FILTER HOUSING-GAS ENGINES
REMOVAL/INSTALLATION Remove crankcase breather/filter hose at side of air
filter housing. Remove wingnut (Fig. 1) and remove
housing from engine. Check condition of gasket at
throttle body and replace as necessary. To replace air filter element only: Remove wingnut
and air filter housing cover (Fig. 1). Clean inside of
housing before replacing filter. Housing removal is not necessary for filter replacement.
^
WING NUT

COVER
:

GASKET
| I
MOUNTING

STUD

Fig.
1 Air
Filter
Housing—Gas
Powered
Engines—Typical
page

Electric
EGR Transducer (EET)
20

EVAP
Canister
20

EVAP
Canister Purge Solenoid
20

Fuel Tank
Filler
Tube
Cap . 21

Oxygen
(02)
Sensor
21
Powertrain Control Module (PCM)
21

Pressure
Relief/Rollover Valve
21
If housing-to-throttle body mounting stud is being
installed, tighten to 10 N»m (90 in. lbs.) torque. In­ stall housing to engine and tighten wingnut to 1.5
N»m (15 in. lbs.) torque.

AIR FILTER/FILTER HOUSING-DIESEL ENGINES
REMO
VAL/INSTALLA
TION Remove the hose clamp at air filter housing (Fig.

2).
Remove mounting nuts and remove air filter
housing from vehicle.
To replace air filter element only: Remove hose clamp
and hose at air filter housing inlet tube. Remove three
wingnuts and air filter housing cover (Figs. 2 and 3). Clean inside of housing before replacing filter. Housing
removal is not necessary for filter replacement.
When installing a new air filter element, push el­
ement into cover. Be sure it is pushed into tabs in
back of filter housing. Install wing nuts.
If housing had been removed, install mounting
nuts and tighten to 10 N»m (95 in. lbs.) torque.

AIR INJECTION PUMP
REMOVAL (1) Remove the relief valve hose clamp (Fig. 4) and
remove hose at relief valve.
(2) Remove relief valve from air pump (two bolts)
(Fig. 4). (3) Loosen (but do not remove at this time) the
three air pump pulley mounting bolts (number 2—figure 4).
(4) Relax the automatic belt tensioner and remove
the engine accessory drive belt. Refer to Group 7, Cooling System. See Belt Removal/Installation.
(5) Remove the three air pump pulley bolts and re­
move pulley from pump.
(6) Remove the two air pump mounting bolts
(number
1—figure
4) and remove pump from mount­
ing bracket.

25
- 18
EMISSION
CONTROL
SYSTEMS

Fig. 2 Air Filter Housing—Diesel Fig. 3 Air Filter Element—Diesel INSTALLATION
(1) Install air injection pump and two bolts to
mounting bracket. Tighten bolts to 40 N*m (30 ft.
lbs.) torque. (2) Install pulley and three mounting bolts.
Tighten bolts to 11 N*m (105 in. lbs.) torque.
(3) Install drive belt. Refer to Group 7, Cooling
System. See Belt Removal/Installation.
(4) Clean the gasket mounting area on the air
pump and valve. (5) Install a new gasket (Fig. 4) (relief valve-to-
pump) and install relief valve to pump. Tighten bolts to 10 N*m (95 in. lbs.) torque.
(6) Install relief valve hose and hose clamp to re­
lief valve. •

RELIEF
VALVE
J9325-39

Fig. 4 Air Injection
Pump
and
Components

AIR
INJECTION PUMP RELIEF VALVE REMOVAL

(1) Remove the relief valve hose clamp (Fig. 4) and
remove hose at relief valve.
(2) Remove relief valve from air pump (two bolts)
(Fig. 4). Discard old gasket.

INSTALLATION (1)
Clean the gasket mounting area on the pump
and valve. (2) Install a new gasket (Fig. 4) (relief valve-to-
pump) and install relief valve to pump. Tighten bolts
to 10 N*m (95 in. lbs.) torque. (3) Install relief valve hose and hose clamp to re­
lief valve.

CHECK
VALVE—AIR INJECTION TUBE REMOVAL
(1) Remove the hose clamp at inlet side of valve.
(2) Remove hose from valve.
(3) Remove valve from catalyst tube (unscrew). To
prevent damage to catalyst tube, a backup
wrench must be used on tube.

INSTALLATION
(1) Install valve to catalyst tube. Tighten to 33
N«m (25 ft. lbs.) torque.
(2) Install hose and hose clamp to valve.

COOLANT TEMPERATURE SENSOR
For description, operation, diagnosis and removal/
installation procedures, refer to Group 14, Fuel Sys­

tems.

25 - 20
EMISSION CONTROL SYSTEMS

• engine and tighten to 14 N*m (130 in. lbs.) torque.
Install electrical connector to sending unit.
(5) Clean the intake manifold and EGR valve of
any old gasket material.
(6) Install a new EGR valve gasket to intake man­
ifold. (7) Install EGR valve to intake manifold. Tighten
two mounting bolts to 23 N*m (200 in. lbs.) torque.
(8) Install vacuum lines to EGR valve.
(9) Install spark plug cable loom and plug cables to
valve cover mounting stud.
(10) Install air filter housing.

ELECTRIC EGR TRANSDUCER
(EET) The EGR valve and the EET are serviced as one
unit. Also refer to EGR valve removal/installation.

REMOVAL
(1) Remove air filter housing.
(2) Disconnect wiring connector at EET (Fig. 8). (3) Disconnect hoses at EET. Note position of hoses
for easier installation.
(4) Remove EET from engine.
INSTALLATION (1) Position EET to engine and connect hoses.
(2) Connect wiring connector. (3) Install air filter housing.

ELECTRICAL
CONNECTOR
TRANSDUCER
J9325-15

Fig.
8 Electric EGR Transducer (EET)—Typical

EVAP
CANISTER
The EVAP canister is mounted in the engine com­
partment on the right side wheel well (Fig. 9).

REMOVAL
(1) Remove fuel tubes/lines at EVAP canister.
Note location of tubes/lines before removal for easier
installation. (2) Remove mounting bolt at canister mounting
strap (Fig. 9).
(3) Remove canister and two-piece strap from
mounting bracket.
CANISTER

MOUNTING
STRAPS
CANISTER

MOUNTING
BRACKET RIGHT FRONT
INNER FENDER

MOUNTING
BOLT
EVAP
CANISTER
J9325-36

Fig.
9
EVAP
Canister Removal/Installation INSTALLATION
(1) Position canister to mounting bracket.
(2) Install canister and both mounting straps to
mounting bracket.
(3) Install canister bolt and tighten to 10 N*m (95
in. lbs.) torque.
(4) Install fuel tubes/lines to canister.

EVAP
CANISTER PURGE SOLENOID
REMOVAL
(1) Remove air filter housing.
(2) Disconnect wiring connector at solenoid (Fig.

10). BRACKET
MOUNTING

NUT
ELECTRICAL
CONNECTOR
CANISTER PURGE
SOLENOID/BRACKET VACUUM
CONNECTOR

J9214-50

Fig.
10
EVAP
Canister
Purge
Solenoid—
Typical

(3) Disconnect vacuum harness at solenoid (Fig.

10).

•
EMISSION CONTROL SYSTEMS 25 - 21 (4) Remove solenoid and its support bracket from
intake manifold (one bolt—5.2L/5.9L engine, one
nut—3.9L engine). (5) Remove EVAP canister purge solenoid from en­

gine.

INSTALLATION
(1) Install EVAP canister purge solenoid and its
mounting bracket to intake manifold.
(2) Connect vacuum harness and wiring connector.
(3) Install air filter housing.
FUEL TANK FILLER TUBE CAP If replacement of the fuel filler tube cap (Fig. 11) is
necessary, it must be replaced with an identical cap
to be sure of correct system operation.

CAUTION:
Remove
the
fuel
tank
filler
tube
cap to
relieve
fuel
tank
pressure.
The cap
must
be re­
moved
prior
to
disconnecting
any
fuel
system
com­

ponent
or
before
draining
the
fuel
tank.
PLASTIC

GASKET
RN348
Fig.
11
Fuel
Tank
Filler
Tube Cap—Typical
OXYGEN (02) SENSOR For description, operation, diagnosis and removal/
installation procedures of the 02 sensor, refer to Group 14, Fuel Systems. POWERTRAIN CONTROL MODULE (PCM)
For removal and installation procedures, refer to
Group 14, Fuel Systems.
PRESSURE RELIEF/ROLLOWER WALWE For removal and installation procedures, refer to
the Fuel Tank section of Group 14, Fuel Systems.