Chapter 2 Part C
3.OL V6 engine
2C-3
4.3 An exploded view of the left side valve
cover, rocker arm assembly and cylinder head
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
Spark plug wire connections
(nos. 2, 4 and 6)
Distributor
EGR pipe
EGR gasket
Heatprotector
Air intake plenum bracket
Bracket
Exhaust manifold
Gasket
33
Valve cover
Valve cover gasket
1
Air intake plenum gasket rear
Cylinder head
Cylinder head gasket
Timing belt rear cover
-29
25
Exterior engine components, such as the intake and exhaust man-
ifolds, the oil pan (and the oil pump), the water pump, the starter motor,
the alternator, the distributor and the fuel system components can be re-
moved for repair with the engine in place.
Since the cylinder heads can be removed without pulling the engine,
camshaft and valve component servicing can also be aocomplished with
the engine in the vehicle. Replacement of the timing belt and sprockets
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 bearings is
possible with the engine in the vehicle. However, this practice is not rec-
ommended because of the cleaning and preparation work that must be.
done to the components involved.
3
Top Dead Center (TDC) for number one piston - locating
This procedure is essentially the same for all engines. Refer to Chap-
’ ter 2, Part A, Section 3 and follow the procedure outlined there.
4 Valve covers - removal and installation
Refer to illustrations 4.3, 4.8 and 4.16
Removal
1 Relieve the fuel system pressure (see Chapter 4).
2 Disconnect the negative cable from the battery.
Left side cover
3 Remove the breather hose from the valve cover (see illustration).
4 Remove the spark plug wires from the spark plugs. Mark them clearly
with pieces of masking tape to prevent confusion during installation.
5 Remove air intake plenum (see Chapter 4).
6 Remove the valve cover bolts and washers.
7 Detach the valve cover. Caution: If the cover is stuck to the head,
bump one end with a block of wood and a hammer to jar it loose. If that
doesn’t work, try toslipa flexibleputtyknife between the headandcoverto
breakfhegaskefseal.
Don’fpryaffhecover-fo-headjointordamagetothe
sealing surfaces may occur (leading to oil 1eaF.s in the future).
To Next Page
Loading...
Need help?
General
