Mitsubishi Outlander GS45X. Manual — part 496

ON-VEHICLE SERVICE

TSB Revision

ENGINE MECHANICAL <3.0L ENGINE>

11C-21

NOTE: After parking for many hours, oil may run out from the
oil passage and take time before oil is supplied to the lash
adjuster, causing air to enter the high pressure chamber.
NOTE: In the above cases, abnormal noise can be eliminated
by bleeding the lash adjuster system.
NOTE: An abnormal noise due to malfunction of the lash
adjuster is produced immediately after starting the engine and
changes with the engine speed, irrespective of the engine load.
If, the abnormal noise is not produced immediately after start-
ing the engine or does not change with the engine speed, or it
changes with the engine load, the lash adjuster is not the cause
for the abnormal noise.
NOTE: When the lash adjuster is malfunctioning, the abnormal
noise is rarely eliminated by continuing the warming-up of the
engine at idle speed.
However, the abnormal noise may disappear only when seizure
is caused by oil sludge in the engine whose oil is not main-
tained properly.
1. Start the engine.
2. Check if the abnormal noise produced immediately after

starting the engine, changes with the change in the engine
speed.
If the abnormal noise is not produced immediately after
starting the engine or it does not change with the engine
speed, the lash adjuster is not the cause for the noise.
Therefore, investigate other causes. The abnormal noise is
probably caused by some other parts than the engine proper
if it does not change with the engine speed. (In this case, the
lash adjuster is in good condition.)

3. With the engine idling, change the engine load (shift from N

to D range, for example) to make sure that there is no
change in the level of abnormal noise.
If there is a change in the level of abnormal noise, suspect a
tapping noise due to worn crankshaft bearing or connecting
rod bearing (In this case, the lash adjuster is in good
condition.).

4. After completion of warm-up, run the engine at idle to check

for abnormal noise.
If the noise is reduced or disappears, clean the lash adjuster
(Refer to GROUP 11D, Engine Overhaul

− Rocker Arms and

Camshaft

− Lash Adjuster Inspection

P.11D-41

). As it is

suspected that the noise is due to seizure of the lash
adjuster. If there is no change in the level of the abnormal
noise, proceed to step 5.

5. Run the engine to bleed the lash adjuster system (Refer to

P.11C-21

.).

6. If the abnormal noise does not disappear after air bleeding

operation, clean the lash adjuster (Refer to GROUP 11D,
Engine Overhaul

− Rocker Arms and Camshaft − Lash

Adjuster Inspection

P.11D-41

).

.

ON-VEHICLE SERVICE

TSB Revision

ENGINE MECHANICAL <3.0L ENGINE>

11C-22

Bleeding lash adjuster system

NOTE: It can possibly be difficult to check the oil level within 30
seconds of the engine stopped because of the structure of oil
level gauge. If it's difficult, the oil level must be checked later.
The oil level always check at the one side of oil level gauge: at
the rear side of the vehicle. The oil level cannot be checked at
the another side because the engine oil adheres to all the sur-
faces.
1. Check engine oil and add or change oil if required.

NOTE: If the engine oil level is low, air is sucked from the oil
screen, causing air to enter the oil passage.
NOTE: If the engine oil level is higher than specification, oil
may be stirred by the crankshaft, causing oil to be mixed
with a large quantity of air.
NOTE: If oil is deteriorated, air is not easily separated from
oil, increasing the quantity of air contained in oil.

NOTE: If air mixed with oil enters the high pressure chamber
inside the lash adjuster from the above causes, air in the
high pressure chamber is compressed excessively while the
valve is opened, resulting in an abnormal noise when the
valve closes. This is the same phenomenon as that
observed when the valve clearance has become excessive.
The lash adjuster can resume normal function when air
entered the lash adjuster is removed.

2. Idle the engine for one to three minutes to warm it up.
3. Repeat the operation pattern, shown in left figure, at no load

to check for abnormal noise. (Usually the abnormal noise is
eliminated after repetition of the operation 10 to 30 times. If,
however, no change is observed in the level of abnormal
noise after repeating the operation more than 30 times,
suspect that the abnormal noise is due to some other
factors.)

4. After elimination of abnormal noise, repeat the operation

shown in left figure five more times.

5. Run the engine at idle for one to three minutes to make sure

that the abnormal noise has been eliminated.

AK704450

Good

Minimum

Maximum

AC

AK700023

High-
pressure
chamber

AB

AK700024

Open throttle
valve gradually

Close
throttle valve

Approximately
3,000 r/min

Idling
operation

Once

15 s

15 s

Air bleeding operation pattern

AB

CRANKSHAFT PULLEY

TSB Revision

ENGINE MECHANICAL <3.0L ENGINE>

11C-23

CRANKSHAFT PULLEY

REMOVAL AND INSTALLATION

M1112001602513

Required Special Tools:

• MB990767: Front Hub and Flange Yoke Holder

• MD998719: Pin

• MB992275: Drive Belt Installer

• MB992276: Drive Belt Remover

Pre-removal Operation
• Engine Room Under Cover Front B and Engine Room

Side Cover (RH) Removal (Refer to GROUP 51, Under

Cover

P.51-23

).

Post-installation Operation
• Generator Drive Belt Tension Check (Refer to

P.11A-9

).

• Power Steering Oil Pump Drive Belt Tension Check (Refer

to

P.11C-9

).

• Engine Room Under Cover Front B and Engine Room

Side Cover (RH) Installation (Refer to GROUP 51, Under

Cover

P.51-23

).

AC703043

AC800552

1

2

3

4

5

(Engine oil)

AC

+60˚

to

to

to

200 N·m
148 ft-lb

0 N·m
0 ft-lb

110 N·m
81 ft-lb

Removal steps

<<

A

>>

1.

Generator drive belt

<<

B

>> >>

B

<< 2.

Power steering oil pump drive belt

<<

C

>> >>

A

<< 3.

Crankshaft pulley center bolt

<<

C

>> >>

A

<< 4.

Crankshaft pulley washer

<<

C

>> >>

A

<< 5.

Crankshaft pulley

Removal steps (Continued)

CRANKSHAFT PULLEY

TSB Revision

ENGINE MECHANICAL <3.0L ENGINE>

11C-24

REMOVAL SERVICE POINTS

.

<<A>> GENERATOR DRIVE BELT REMOVAL

CAUTION

When the generator drive belt is reused, draw an arrow
indicating the rotating direction on the back of the belt
using chalk to install the same direction.
1. Turn the drive belt auto-tensioner to counterclockwise, and

insert the L-shaped hexagon wrench to the auto-tensioner
hole in order to fix the auto-tensioner.

2. Remove the generator drive belt.

.

<<B>> POWER STEERING OIL PUMP DRIVE
BELT REMOVAL

CAUTION

• To reuse the power steering oil pump drive belt, draw

an arrow indicating the rotating direction on the back of

the power steering oil pump drive belt using chalk to

install the same direction.

• Hang the special tool MB992276 on the vehicle compo-

nents (including front side members) using a cord and

paper clip to prevent from falling.

1. Set the special tool MB992276 as shown and hold it by a

finger.

CAUTION

Be careful that the finger holding the special tool
MB992276 is not pinched.

2. Slightly turn the crankshaft pulley clockwise until the special

tool MB992276 is pinched and held between the oil pump
assembly pulley and the power steering oil pump drive belt
as shown.

3. If the special tool MB992276 is held, move the finger off.

CAUTION

If the power steering oil pump drive belt is detached, be
careful that the special tool MB992276 is also detached
and fallen.
4. Slowly turn the crankshaft pulley clockwise until the power

steering oil pump drive belt goes aground on the special tool
MB992276 and is detached.

5. Remove the special tool MB992276.

.

AC703079

L-shaped
hexagon
wrench

AC

AC801192AC

Cord

Paper clip

MB992276

AC800770AC

Cord

Paper clip

MB992276