Egr Valve; Egr Tube (Four-Cylinder Engine); Egr Tube (Inline Six-Cylinder Engine) - Jeep cherokee 1989 Owner's Manual

6.1 l a Refer t o this schematic when testing the EGR
system on a four-cylinder model
Solenoid vacuum source
2 Intake manifold
vacuum fitting
Component replacement
Refer to illustrations 6.19 and 6.24

EGR valve

1 4 Detach the vacuum hose from the EGR valve or EGR valve vacuum
transducer (see illustrations 6.8a and 6.8b).
1 5 Remove the t w o EGR valve mounting bolts.
16 Remove the EGR valve and gasket. Discard the gasket.
1 7 Clean the gasket mating surfaces of the EGR valve and intake mani-
fold.
1 8 lnstallation is the reverse of removal. Be sure t o use a new gasket.
6.19 To remove the EGR tube on a four-cylinder engine,
remove the bolts, then unscrew the nut with a flare nut
wrench (if available)
The Motor Manual Guy
Chapter 6 Emissions and engine control systems
3 Solenoid output port
4 EGR vacuum hose
6.1 1 b Refer t o this schematic when testing the EGR
system on an inline six-cylinder model
I Solenoid vacuum source
2 Vacuum connector
3 Solenoid output port
4 EGR vacuum hose
5 EGR valve nipple

EGR tube (four-cylinder engine)

19 Remove the EGR tube-to-exhaust manifold bolts (see illustration).
2 0 Using a flare n ut wrench (if available), unscrew the EGR tube nut
at the intake manifold.
2 1 Remove the tube and discard the gasket.
2 2 lnstallation is t he reverse of removal. Be sure t o use a n e w gasket
and tighten the bolts and nut securely.

EGR tube (inline six-cylinder engine)

2 3 Loosen the exhaust manifold mounting bolts (see Chapter 2,
Part C).
2 4 Using a flare n ut wrench (if available), loosen the EGR tube line
nuts a t t he intake and exhaust manifolds (see illustration).
INTAKE MANIFOLD
6.24 On an inline six-cylinder model, unscrew the line
nuts with a flare nut wrench (if available)
6-15