1991 MITSUBISHI MONTERO break

damaged.
Pump cover wear is measured using a straightedge and feeler
gauge. Pump is to be replaced if warpage or wear exceeds
specifications or mating surface of pump cover is scratched or
grooved.
Fig. 33: Measuring Oil Pump Gear Cavity - Typical
This Graphic For General Information Only
BREAK-IN-PROCEDURE
* PLEASE READ THIS FIRST *
NOTE: Always refer to appropriate engine overhaul article in the
ENGINES section for complete overhaul procedures and
specifications for the vehicle being repaired.
ENGINE PRE-OILING
Engine pre-oiling should be done prior to operation to
prevent engine damage. A lightly oiled pump will cavitate unless oil
pump cavities are filled with engine oil or petroleum jelly.

Engine pre-oiling can be done using pressure oiler (if
available). Connect pressure oiler to cylinder block oil passage
such as oil pressure sending unit. Operate pressure oiler long enough
to ensure correct amount of oil has filled crankcase. Check oil level
while pre-oiling.
If pressure oiler is not available, disconnect ignition
system. Remove oil pressure sending unit and replace with oil pressure
test gauge. Using starter motor, rotate engine starter until gauge
shows normal oil pressure for several seconds. DO NOT crank engine
for more than 30 seconds to avoid starter motor damage.
Ensure oil pressure has reached the most distant point from
the oil pump. Reinstall oil pressure sending unit. Reconnect ignition
system.
INITIAL START-UP
Start the engine and operate engine at low speed while
checking for coolant, fuel and oil leaks. Stop engine. Recheck coolant
and oil level. Adjust if necessary.
CAMSHAFT
Break-in procedure is required when a new or reground
camshaft has been installed. Operate and maintain engine speed between
1500-2500 RPM for approximately 30 minutes. Procedure may vary due to
manufacturers recommendations.
PISTON RINGS
Piston rings require a break-in procedure to ensure seating
of rings to cylinder walls. Serious damage may occur to rings if
correct procedures are not followed.
Extremely high piston ring temperatures are produced obtained
during break-in process. If rings are exposed to excessively high RPM
or high cylinder pressures, ring damage can occur. Follow piston ring
manufacturer's recommended break-in procedure.
FINAL ADJUSTMENTS
Check or adjust ignition timing and dwell (if applicable).
Adjust valves (if necessary). Adjust carburetion or injection idle
speed and mixture. Retighten cylinder heads (if required). If
cylinder head or block is aluminum, retighten bolts when engine is
cold. Follow the engine manufacturer's recommended break-in procedure
and maintenance schedule for new engines.
NOTE: Some manufacturer's require that head bolts be retightened
after specified amount of operation. This must be done to
prevent head gasket failure.

loose .................. A ... Require repair or replacement
of injection tube or
replacement of catalytic
converter.
Air injection tube
restricted ............. A ... Require repair or replacement
of injection tube or
replacement of catalytic
converter.
Air injection tube
threads damaged ........ A ... Require repair or replacement
of injection tube or
replacement of catalytic
converter.
Air injection tube
threads stripped
(threads missing) ...... A ... Require repair or replacement
of injection tube or
replacement of catalytic
converter.
Body cracked ............ B .. Require repair or replacement.
Converter empty ......... A .. Require repair or replacement.
Converter fill plug
missing ................ C .. Require repair or replacement.
Converter missing ....... C ............ Require replacement.
Exhaust gases leaking ... A .. Require repair or replacement.
Flanges leaking ......... A ... Require repair or replacement
of flanges.
Inlet pipes cracked ..... B .. Require repair or replacement.
Internal rattle (except
pellet-type) ........... 2 .......... (1) Further inspection
required.
Mounting brackets that
are part of converter
broken ................. A .. Require repair or replacement.
Obvious overheating ..... .. ......... ( 2) Require testing of
converter.
Outlet pipes cracked .... B .. Require repair or replacement.
Pieces of catalyst
material found
downstream ............. 1 ............ Suggest replacement.
Plugged ................. A ........ ( 3) Require replacement.
Testing has determined
that existing converter
has been lead-poisoned,
contaminated, or failed
testing ................ A .. Require repair or replacement.
( 1) - If the converter is breaking up, suggest converter
replacement. If an object has fallen into the converter,
remove the object.
( 2) - Overheating is caused by something other than the
converter. Further diagnosis is required to determine
the cause of the overheating.
( 3) - Determine cause and correct to ensure that new converter
will not become plugged.









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EXHAUST AND TAIL PIPES
NOTE: For pipes with resonators, also see MUFFLERS AND RESONATORS.
EXHAUST AND TAIL PIPE INSPECTION

FR O NT S A FE TY B ELT B UCKLE R ELE A SE B UTTO N C AN B REA K
1991 M it s u bis h i M onte ro
NHTSA RECALL BULLETIN
Model(s): 1986 Mitsubishi Cordia
1986 Mitsubishi Galant
1986 Mitsubishi Mirage
1986 Mitsubishi Montero
1986 Mitsubishi Pickup
1986 Mitsubishi Starion
1987 Mitsubishi Cordia
1987 Mitsubishi Galant
1987 Mitsubishi Mirage
1987 Mitsubishi Montero
1987 Mitsubishi Pickup
1987 Mitsubishi Van/Wagon
1988 Mitsubishi Cordia
1988 Mitsubishi Galant
1988 Mitsubishi Mirage
1988 Mitsubishi Montero
1988 Mitsubishi Pickup
1988 Mitsubishi Van/Wagon
1989 Mitsubishi Galant
1989 Mitsubishi Mirage
1989 Mitsubishi Montero
1989 Mitsubishi Pickup
1989 Mitsubishi Sigma
1989 Mitsubishi Van/Wagon
1990 Mitsubishi Eclipse
1990 Mitsubishi Mirage
1990 Mitsubishi Montero
1990 Mitsubishi Pickup
1990 Mitsubishi Sigma
1990 Mitsubishi Van/Wagon
1991 Mitsubishi 3000GT
1991 Mitsubishi Eclipse
1991 Mitsubishi Mirage
1991 Mitsubishi Montero
1991 Mitsubishi Pickup
Campaign No: 95V103004
Number of Affected Vehicles: 658000
Beginning Date of Manufacture: 1985 APR
Ending Date of Manufacture: 1991 JUL
VEHICLE DESCRIPTION:
Passenger vehicles and light duty trucks and vans equipped with safety
belts made by Takata Corporation.
SYSTEM:
Seat belts; belt buckles.
FAULT:
Fastener, Thread failure.
DESCRIPTION OF DEFECT:
The front safety belt buckle release buttons can break. These red
plastic release buttons are marked "PRESS." If a button breaks,
pieces can fall into the buckle assembly causing the buckle to operate

improperly.
CONSEQUENCE OF DEFECT:
The safety belts would not provide adequate protection to an occupant
in a vehicle crash.
CORRECTIVE ACTION:
Owners should promptly check the condition and operation of both front
safety belt buckles and carefully inspect the red release button for
any breaks or cracks. They should ensure that both buckles are
operating properly by inserting each latch plate into its buckle,
tugging on the belt to make sure the latch is securely locked, and
then pressing the release button. The latch plate should pop out of
the buckle when the button is pressed. If either release button shows
a sign of breaking or cracking or if either buckle fails to operate
properly, owners should promptly contact their authorized dealer to
schedule an appointment to have the buckle replaced or repaired, free
of charge. The manufacturer is developing a remedy designed to prevent
failure of the buttons that are not currently broken.
NOTE:
If your vehicle is presented to an authorized dealer on an agreed upon
service date and the remedy is not provided free of charge within a
reasonable time, please contact Mitsubishi at 1-800-222-0037. Also
contact the National Highway Traffic Safety Administration's Auto
Safety Hotline at 1-800-424-9393.
ADDITIONAL INFORMATION:
The National Highway Traffic Safety Administration operates Monday
through Friday from 8:00 AM to 4:00 PM, Eastern Time. For more
information call (800) 424-9393 or (202) 366-0123. For the hearing
impaired, call (800) 424-9153.

\00398V 311000: F R O NT S EA T B ELTS

1991 M it s u bis h i M onte ro
NHTSA RECALL BULLETIN
Model(s): 1986-88 Mitsubishi Cordia
1986-91 Mitsubishi Galant
1986-91 Mitsubishi Mirage
1986-91 Mitsubishi Montero
1986-91 Mitsubishi Pickup
1986 Mitsubishi Starion
1990-91 Mitsubishi Eclipse
1990 Mitsubishi Sigma
1991 Mitsubishi 3000GT
Campaign No: 98V311000
Number of Affected Vehicles: 53162
VEHICLE DESCRIPTION:
Passenger vehicles sold in the Caribbean.
DESCRIPTION OF DEFECT:
In the front passenger seat of these vehicles, which are equipped with
Takata belt buckles, the seat belt release buttons, which are made of
ABS plastic material and marked "press," can break, allowing pieces to
fall into the buckle assembly.
CONSEQUENCE OF DEFECT:
If pieces fall into the buckle assembly, the buckle may not operate
properly, failing to properly restrain an occupant in the event of a
crash.
CORRECTIVE ACTION:
Dealers will repair the front seat belt buckles.
OWNER NOTIFICATION:
Owner notification is expected to begin during early January 1999.
Owners who take their vehicles to an authorized dealer on an agreed
upon service date and do not receive the free remedy within a
reasonable time should contact Mitsubishi Of Caribbean at 1-787-251-
8716. Also contact the National Highway Traffic Safety
Administration's Auto Safety Hotline at 1-888-dash-2-dot (1-888-327-
4236).
ADDITIONAL INFORMATION:
The National Highway Traffic Safety Administration operates Monday
through Friday from 8:00 AM to 4:00 PM, Eastern Time. For more
information call (800) 424-9393 or (202) 366-0123. For the hearing
impaired, call (800) 424-9153.

FU SES & C IR CUIT B REA K ER S

1991 M it s u bis h i M onte ro
Fuses & Circuit Breakers
1983-91 Mitsubishi
Montero
FUSES & CIRCUIT BREAKERS
FUSE PANEL LOCATION
The electrical system is protected against shorts by fuses
that are designed to fail, to prevent damage to the wire harness. The
fuse block is located under the instrument panel on the driver's side.
If a fuse is blown, locate the cause before replacing the fuse. Spare
fuses are contained in the fuse block.
FUSE PANEL IDENTIFICATION (1983-91)
Fig. 1: Fuse Panel Identification (1983-91)
Courtesy of Mitsubishi Motor Sales of America, Inc.
Fuse & Circuit Breaker Identification

federal law. Warranty period is 5 years or 50,000 miles, whichever
occurs first. Covers remedy of non-conformity if vehicle fails to pass
an EPA approved emissions test during the first 24 months or 24,000
miles of this warranty. During the remainder of the warranty period,
covers remedy of non-conformity resulting from failure of certain
emission-related components. See copy of warranty for specific
components covered.
EMISSION SYSTEM WARRANTY (CALIFORNIA)
Warrants that the vehicle was designed, built and equipped to
conform at the time of sale with all applicable U.S. and California
emission standards, and that the emission control system is free from
defects in materials or workmanship which would cause the vehicle not
to meet these standards for 5 years or 50,000 miles, whichever occurs
first. On 1990 and later models, warranty coverage is 3 years or 50,
000 miles, whichever occurs first, with certain emission-related
components covered for 7 years or 70,000 miles, whichever occurs
first. See copy of warranty for specific components covered.
FUSES & CIRCUIT BREAKERS
FUSE PANEL LOCATION
The electrical system is protected against shorts by fuses
that are designed to fail, to prevent damage to the wire harness. The
fuse block is located under the instrument panel on the driver's side.
If a fuse is blown, locate the cause before replacing the fuse. Spare
fuses are contained in the fuse block.
FUSE PANEL IDENTIFICATION (1983-91)
Fig. 8: Fuse Panel Identification (1983-91)
Courtesy of Mitsubishi Motor Sales of America, Inc.
Fuse & Circuit Breaker Identification