Valve Lash-Adjustment - Jeep cherokee 1989 Owner's Manual

5.10 The ends of the pushrods and the valve stems
should be lubricated with moly-base grease prior to
installation of the rocker arms
-
6 Valve lash adjustment
Refer to illustration 6.5
Disconnect the cable from the negative battery terminal.
If the rocker arm covers are still on the engine, refer to Section 4
2
and remove them.
3 If the valve train components have been serviced just prior to this
procedure, make sure that the components are completely reassem-
bled.
4 Rotate the crankshaft until the number one piston is at top dead
center (TDC) on the compression stroke (see Section 3). To make sure
you do not mix up the TDC positions of the number one and four pis-
tons, place your fingers on the number one rocker arms as the timing
marks line up at the crankshaft pulley. If the rocker arms are not mov-
ing, the number one piston is at TDC. If they move as the timing marks
line up, the number four piston is at TDC.
5 Back off the rocker arm nut until play is felt at the pushrod, then
turn it back in until all play is removed. This can be determined by ro-
tating the pushrod while tightening the nut. Just when drag is felt at
the pushrod, all lash has been removed (see illustration). Now turn
the nut an additional 314-turn.
6 Adjust the number one, five and six cylinder intake valves and the
number one, two and three cylinder exhaust valves, with the crankshaft
in this position, using the method just described.
7 Rotate the crankshaft until the number four piston is at TDC on the
compression stroke and adjust the number two, three and four cylin-
der intake valves and the number four, five and six cylinder exhaust
valves.
8 Refer to Section 4 and install the rocker arm covers.
6.5 Rotate the pushrod and tighten the nut until you feel
resistance to rotation
The Motor Manual Guy
2 Part B V 6 engine
Chapter
ensure adequate lubrication until oil pressure builds up
7 Valve spring, retainer and seals
Refer to Chapter 2, Part A, Section 6 for this procedure. Remove
the rocker arm covers, rocker arms and pushrods; adjust the valve lash
following the procedures in this Part.
Intake manifold
8
Refer to illustrations
Disconnect the negative cable from the battery.
1
Drain the coolant from the radiator (See Chapter 1).
2
3 Remove the carburetor (See Chapter 4).
Label and disconnect all wires and hoses connecting the intake
4
manifold to the vehicle.
5 Unbolt the air conditioning compressor and set
disconnecting the hoses (See Chapter 3).
6 Label and then disconnect the spark plug wires from the plugs,
then remove the distributor cap (See Chapter 1).
7 Remove the distributor (See Chapter 5).
8 Remove the EGR and diverter valves (See Chapter
Remove the rocker arm covers (See Section 4).
9
10 Disconnect the upper radiator and heater hoses.
11 Unbolt the intake manifold and lift it off the engine. If
carefully pry against a protrusion of the manifold casting (see illustra-
tion). Do not pry between the gasket surfaces.
8 . 1 I
Moly-base grease applied to the pivot balls will
when the engine is started
-
replacement
- removal and installation
7,
8.20, 8.23
Use a large screwdriver or pry bar to break the
manifold gasket seal
and
8.25
aside without
it
is stuck,
it