ignition MITSUBISHI MONTERO 1987 1.G Repair Manual

8-114 IGNITION SYSTEM - Ignition System
IGNITION SYSTEM
REMOVAL AND INSTALLATION NOEGJAE
20-30
Nm
Spark plug removal steps
+e l
+ 1. Spark plug cable No. 1
~~ ~~ 2. Spark plug cable No. 2
+e e+ 3. Spark plug cable No. 3
*e e+ 4. Spark plug cable No. 4
5. Spark plug
Distributor removal steps
16W1563
~~ l + 1-4. Spark plug cables
6. Connection of distributor connector
+* 7. High tension cable
8. Connection of vacuum hose
de l
q 9. Distributor
Ignition coil removal steps
7. High tension cable NOTE
10. Connection of ignition coil connector (1) Reverse the removal procedures to reinstall.
(2) +e : Refer to “Service Points of Removal”. 11. Ignition coil (3) l + : Refer to “Service Points of Installation”
I
1 STB Revision

IGNITION SYSTEM - Ignition Svstem 8-115
Good No good
721017
72T06t
16W947
SERVICE POINTS OF REMOVAL
l-4. CAUTION OF SPARK PLUG CABLES17. HIGH TENSION
CABLE
The cable is to be pulled out by grasping the cap part.
9. REMOVAL OF DISTRIBUTOR
Before removing the distributor, position the piston in No.
1 cylinder at the top dead center on compression stroke by
the following procedure.
(1) Remove the cap from the distributor.
(2) Turn the crankshaft until the distributor rotor lines up
with the No. 1 spark plug cable electrode on the
distributor cap.
(3) Align the notch on the crankshaft pulley with the timing
mark “T” on the timing indicator to set the engine
SO
that the piston in No. 1 cylinder is at the compression
top dead center.
INSPECTION
CLEANING AND INSPECTION OF SPARK PLUGS
1. Pull the spark plug cables out of the spark plugs.
2. Using a spark plug wrench, take all the spark plugs out of the
cylinder head.
Caution
Ensure that no foreign bodies fall from the spark plug
holes.
3. Using the following criteria check that there is no electrode
spark loss, that there is no damage to the outer insulation, and
that sparking is good.
l Existence of insulation damage
l Spark dissipation
l Carbon accumulation
Using either plug cleaner or wire brush, clean both the up-
per part and the glass part.
l Damage to or breakage of gaskets
l Spark action in spark glass area
In cases where there are black deposits due to carbon, this
indicates excessive passage of mixed gases so that air in-
take becomes extremely deficient.
Owing to the excessively large spark gap, spark loss and so
on can be expected.
In case of white scorching, this indicates an excessively
thin gas mixture and prolongment of sparking time, which
suggests poorly fitted plugs.
/ STB Revision
1

8-116 IGNITION SYSTEM-Ignition System
Plug
cleaner
OlUOO89
Plug gap
gauge NIPPON
termine
rl
direction
High voltage
terminal
01R0234
4. Clean with plug cleaner. Sand which has accumulated in
the screw thread of the plugs is blown out by compressed
air.
5. Using the plug gap gauge, check whether the plug gap reading
is normal, and if not, adjust it.
Standard value : 1.0-1.1 mm (.039-.043 in.)
CHECKING SPARK PLUG CABLE
(1) Check that there are no cracks in the cap or in the insulating
coating.
(2) Ctieck the resistance value.
High tension
cable Spark plug cable
No.1 1 No.2 1 No.3 1 No.4
I 9
I
11
I 13 I 14
CHECKING THE IGNITION COIL
(1) Measurement of the resistance of the external resistor
Measure the resistance of the external resistor. Standard value : 1.2-1.4 IR
(2) Measurement of the resistance of the primary coil
Measure the resistance between the positive (+) terminal
and the negative (-) terminal of the ignition coil. Standard value : 1.1-1.3 IR
(3) Measurement of the resistance of the secondary coil
Measure the resistance between the high voltage terminal
and the positive (+) terminal of the ignition coil. Standard value : 14.5-19.5 kfl
wision I

IGNITION SYSTEM-Ignition System 8417
Notch on
crankshaft
pulley
Stud 2
SERVICE POINTS OF INSTALLATION
9. INSTALLATION OF DISTRIBUTOR
(1) Align the notch on the crankshaft pulley with the timing
mark “T” on the timing indicator to set the engine so
that the No. 1 cylinder is at the compression top dead
center.
(2) Align mating mark on distributor housing with mating mark
on distributor driven gear.
(3) Install distributor to cylinder head while aligning mating
mark on distributor attaching flange with center of distrib-
utor installing stud and tighten nut.
l-4. INSTALLATION OF SPARK PLUG CABLE
Improper arrangement of spark plug cables will induce voltage
between the cables, causing miss firing and developing a
surge at acceleration in high-speed operation. Therefore, be
careful to arrange the spark plug cables properly by the fol-
lowing procedure.
1. Install the spark plug cable clamps as shown in the illus-
tration.
2. The numerals on the support and clamp indicate the spark
plug cable No.
3. Pay attention to the following items when the spark plug
cables are installed.
(1) Install the cables securely to avoid possible contact
with metal parts.
(2) Install the cables neatly, ensuring they are not too
tight, loose, twisted or kinked.
( STB Revision

8-118 IGNITION SYSTEM - Ignition System
SPARK PLUG CABLE INSTALLATION
I( 1
-4
-3
3
-1
-2
3
I 3
2 4
View P
/ STB Revision
5EL04
1

IGNITION SYSTEM - Distributor
DISTRIBUTOR
DISASSEMBLY AND REASSEMBLY
8-119
Disassembly steps
1. Breather
2. Distributor cap
3. Packing
4. Contact carbon
5. Rotor
6. Vacuum control
7. Ground wire
8. Lead wire
l + Adjustment of air gap
9. Igniter
4* 10. Rotor shaft
+*** 11. Signal rotor
l * 12. Breaker plate
4* 13. Spring retainer
4* 14. Governor spring
15. Governor weight
16. Lock pin
- Vehicles for
California
Vehicles except
for California
8
4**+ 17. Driven gear
18. Washer
19. “0” ring
20. Distributor shaft
21. Washer
22. Oil seal
23. Distributor housing
NOTE
(1) Reverse the disassembly procedures to reassemble.
(2) +e : Refer to “Service Points of Disassembly”.
(3) Hw: Refer to “Service Points of Reassembly”.
(4)
q : Non-reusable parts
lEL104 1 STB Revision

8-120 IGNITION SYSTEM - Distributor
6ELO6i
ti Pin punch
II
1ELlOi
SERVICE POINTS OF DISASSEMBLY
10. DISASSEMBLY OF ROTOR SHAFT/l 1. SIGNAL ROTOR
Place igniter base on soft base (wooden block) and lightly tap
rotor shaft to remove it from signal rotor.
13. DISASSEMBLY OF SPRING RETAINERI14. GOVERNOR
SPRING
Remove two spring retainers with pliers and then remove two
governor springs.
17. DISASSEMBLY OF DRIVEN GEAR
(1) Mark location of driven gear on distributor shaft.
(2) Place driven gear on soft base (wood block) so that spring
pin can be removed.
(3) Using a pin punch, remove spring pin.
INSPECTION
Check according to the following provisions and repair or replace
anything faulty.
CAP ROTOR
(1) Ensure there are no cracks in the cap.
(2) Ensure that the electrodes of the cap and of the rotor are
undamaged.
(3) Wipe off any dirt from the cap or the rotor.
SERVICE POINTS OF REASSEMBLY
Before servicing be sure to clean and inspect all parts.
1 STB Revision

IGNITION SYSTEM-Distributor 8-121
Distributor
w 6EL093
/” A
I -1-- Socket
17. REASSEMBLY OF DRIVEN GEAR Install
driven gear into distributor shaft at previously marked
location.
12. REASSEMBLY OF BREAKER PLATE Install igniter base to housing. Position the igniter base so that
the projection (A) fits into the groove (9).
11. REASSEMBLY OF SIGNAL ROTOR Install signal rotor to rotor shaft. Position the signal rotor so
that the dowel pin fits into the groove.
. ADJUSTMENT OF AIR GAP Adjust air gap between signal rotor and pick-up of igniter.
Standard value : 0.8 mm (.0315 in.)
1 STB Revision

8-122 IGNITION SYSTEM - Ugnition Switch
IGNITION SWITCH
REMOVAL AND INSTALLATION
Removal steps
1. Lower column cover
2. Upper column cover
3. Cable band
4. Ignition switch
5. Key remaind switch NOTE Reverse the removal procedures to reinstall
NOEGLAE
16W1557
16UO36C
!I
INSPECTION (1) Disconnect the wiring connector
from the ignition switch,
and connect an ohmmeter to the
switch side connector. (2) Operate the switch, and check the continuity between the
terminals.
START / Ignition switch
NOTE
O-C indicates that there is continuity between the terminals. 1 STB Revision -7

METERS AND GAUGES-Specifications
METERS AND GAUGES
8-123
SPECIFICATIONS
GENERAL SPECIFICATIONS
METERS AND GAUGES NOEHB-
Items
Speedometer
Type
Tachometer
Type
Detection source
Fuel gauge
Type
Fuel gauge unit
Type
Water temperature gauge
Type
Water temperature gauge unit
Type
Oil pressure gauge
Type
Oil pressure gauge unit
Type
Inclinometer
Type
Damping system
Voltage meter
Type Specifications
Electromagnetic type
Pulse type
Ignition coil
Bimetal type (constant-voltage relay incorporated for 7V)
Variable resistance type
Bimetal type (7V operation)
Thermistor type
Bimetal type
Bimetal type
Gravity type
Oil-filled system
Bimetal type
INDICATOR AND WARNING LIGHTS
NOEHC-B
Items Specifications
Turn signal indicator lights
W 1.4 (74)
High beam indicator light W 1.4 (74)
Door-ajar warning light W 1.4 (74)
Fasten seat belt indicator light W 1.4 (74)
Brake warning light W 1.4 (74)
Charging warning light W 1.4 (74)
4WD indicator light W 1.4 (74)
EGR warning light W 1.4 (74)
Oil pressure warning light W 1.4 (74)
A/T oil temperature warning light
W 1.4 (74)
Overdrive indicator light
W 1.4 (74)
Free-wheeling hub indicator light W 1.4 (74)
NOTE
The values in parentheses denote SAE grade numbers.
1 STB Revision ”