Rocker Arm Cover-Removal And Installation - Jeep cherokee 1989 Owner's Manual

3.6 Make a mark on the aluminum distributor body
directly below the number one spark plug wire terminal on
the distributor cap (arrow)
of the distributor cap and ground it on the block with a jumper
wire.
(no center terminal in the distributor cap), unplug the BAT elec-
trical connector from the coil (see Chapter 5).
4 In order to bring any piston to TDC, the crankshaft must be turned
using one of the methods outlined below. When looking at the front
of the engine, normal crankshaft rotation is clockwise.
a) The preferred method is to turn the crankshaft with a socket and
ratchet attached t o the bolt threaded into the front of the crank-
shaft.
be used. Follow the instructions included with the switch. Once
the piston is close t o TDC, use a socket and ratchet, as described
in the previous paragraph.
position in short bursts, you can get the piston close to TDC with-
out a remote starter switch. Make sure your assistant is out of
the vehicle, away from the ignition switch, then use a socket
and ratchet (as described in Paragraph a) to complete the pro-
cedure.
5 Note the position of the terminal for the number one spark plug
wire on the distributor cap. If the terminal isn't marked, follow the plug
wire from the number one cylinder spark plug to the cap.
6 Use a felt-tip pen or chalk to make a mark on the distributor body
directly under the terminal (see illustration).
7 Detach the cap from the distributor and set it aside (see Chapter 1
if necessary).
8 Turn the crankshaft (see Paragraph 3 above) until the notch in the
crankshaft pulley is aligned with the 0 on the timing plate (located at
9 Look at the distributor rotor
mark you made on the distributor body. If it is, go to Step 12.
°
1 0 If the rotor is 1 8 0 off, the number one piston is at TDC on the
exhaust stroke. Go to Step 1 1.
1 1 To get the piston to TDC on the compression stroke, turn the crank-
shaft one complete turn (360°) clockwise. The rotor should now be
pointing at the mark on the distributor. When the rotor is pointing at
the number one spark plug wire terminal in the distributor cap and the
ignition timing marks are aligned, the number one piston is at TDC on
the compression stroke.
1 2 After the number one piston has been positioned at TDC on the
compression stroke, TDC for any of the remaining pistons can be
located by turning the crankshaft and following the firing order. Mark
the remaining spark plug wire terminal locations on the distributor body
just like you did for the number one terminal, then number the marks
to correspond with the cylinder numbers. As you turn the crankshaft,
the rotor will also turn. When it's pointinn directly at one of the marks
on the distributor, the piston for that particular dylinder is at TDC on
the com~ression stroke.
The Motor Manual Guy
Chapter 2 Part A Four-cylinder engine
it should be pointing directly at the
-
Turn the crankshaft clockwise until the notch aligns
3.8
with the
-
4 Rocker arm cover removal and installation
Refer to illustrations 4.3, 4.5, 4.6, 4.8a and 4.8b
1 Disconnect the negative cable from the battery.
2 Remove the air cleaner (see Chapter 4).
3 Label and then remove all hoses and/or wires necessary to pro-
vide clearance for rocker arm cover removal (see illustration).
4 On carburetor equipped models, disconnect the fuel pipe at the
fuel pump and swivel the pipe to allow removal of the rocker arm cover.
Cap the open fuel fittings (see Chapter 4).
4.3 Typical rocker arm cover
the CCV vacuum and fresh air inlet hoses (arrows)
2A-3
-
before removing, disconnect