Rocker Arm Covers-Removal And Installation; Right Side - Jeep cherokee 1989 Owner's Manual

Intake manifold-to-cylinder head bolts
Oil pan mounting bolts
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6 x 1.0 m m
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Oil pump-to-rear main bearing cap bolt
Rear main bearing cap bolts
Rockerarmstud
Rocker arm cover-to-cylinder head bolts
Withgasket
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RTV only
Tensioner bracket-to-engine block bolts
Timing chain cover bolts
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10 x 1.5 m m
Timing chain tensioner bolts
Vibration damper center bolt
1 General information
This Part of Chapter 2 is devoted to in-vehicle repair procedures for
the V6 engine. All information concerning engine removal and installa-
tion and engine block and cylinder head overhaul can be found in Part D
of this Chapter.
The following repair procedures are based on the assumption that
the engine is installed in the vehicle. If the engine has been removed
from the vehicle and mounted on a stand, many of the steps outlined
in this Part of Chapter 2 will not apply.
The specifications included in this Part of Chapter 2 apply only t o
the procedures contained in this Part. Part D of Chapter 2 contains the
specifications necessary for cylinder head and engine block rebuilding.
2 Repair operations possible with the engine in the vehicle
Many major repair operations can be accomplished without removing
the engine from the vehicle.
Clean the engine compartment and the exterior of the engine with
some type of degreaser before any work is done. It will make the job
easier and help keep dirt out of the internal areas of the engine.
Depending on the components involved, it may be helpful to remove
the hood to improve access to the engine as repairs are performed (refer
t o Chapter 1 1 if necessary). Cover the fenders t o prevent damage to
the paint. Special pads are available, but an old bedspread or blanket
will also work.
If vacuum, exhaust, oil or coolant leaks develop, indicating a need
for gasket or seal replacement, the repairs can generally be made with
the engine in the vehicle. The intake and exhaust manifold gaskets,
timing cover gasket, oil pan gasket, crankshaft oil seals and cylinder
head gasket are all accessible with the engine in place.
Exterior engine components, such as the intake and exhaust
manifolds, the oil pan (and the oil pump), the water pump, the starter
motor, the alternator, the distributor and the fuel system components
can be removed for repair with the engine in place.
Since the cylinder heads can be removed without pulling the engine,
valve component servicing can also be accomplished with the engine
in the vehicle. Replacement of the timing chain, sprockets and cam-
shaft is also possible with the engine in the vehicle.
In extreme cases caused by a lack of necessary equipment, repair
or replacement of piston rings, pistons, connecting rods and rod bear-
ings is possible with the engine in the vehicle. However, this practice
is not recommended because of the cleaning and preparation work that
must be done to the components involved.
3 Top Dead Center (TDC) for number one piston
Refer to illustration 3. 1
See Chapter 2, Part A, Section 3 for this procedure. The timing mark
tab is attached t o the timing chain cover (see illustration). Be sure to
The Motor Manual Guy
Part B V6 engine
Chapter 2
43 t o 66 in-lbs
8
14
3.1
use the firing order in the specifications in this Part of Chapter 2 for
the V6 engine.
Rocker arm covers
4
Refer to illustrations 4.5,
1
Disconnect the negative cable from the battery.
2 Remove the air cleaner assembly (see Chapter 4).
3 Label and then disconnect the wires and hoses which would inter-
fere with removal of the rocker arm cover(s).
Label and then detach the spark plug wires and unclip the wire
4
retainers from the studs.

Right side

Remove the air injection diverter valve and the ignition coil (see
5
illustration).
-
locating
4.5
V 6 engine timing marks are located at the lower front
of the engine
-
removal and installation
I
4.1 and 4.12
Remove the ignition coil (arrow) for access to the
right rocker arm cover