Mitsubishi L200. Manual - part 21

ON-VEHICLE SERVICE

ENGINE MECHANICAL

11A-12

VALVE CLEARANCE CHECK AND
ADJUSTMENT

M1111001502096

NOTE: The valve clearance check and adjustment
should be done when the engine is cold.
1. Remove the engine air intake pipe.
2. Remove the inlet manifold.
3. Remove the injection pipe.

CAUTION

Leaked fuel on parts causes a decrease in func-
tion and burning. Therefore, Place waste to
absorb leaked fuel.
4. Remove the timing belt cover.
5. Remove the rocker cover.

AK500379

Timing marks

Crank shaft
pulley

Timing marks

Camshaft
sprocket

6. Align the camshaft sprocket timing marks and set

the No. 1 cylinder at top dead centre.

CAUTION

The crankshaft should always be turned in a
clockwise direction.

AK500380 AD

Exhaust valve side

Inlet valve side

7. Measure the valve clearance.

If the valve clearance is not as specified, loosen
the rocker arm lock nut and adjust the clearance
using a thickness gauge between the cam shaft
and the roller while turning the adjusting screw.

Standard value (cold engine):

Inlet valve: 0.09 mm
Exhaust valve: 0.14 mm

AK500381

Thickness gauge

MB992046

8. While holding the adjusting screw with a

screwdriver to prevent it from turning, tighten the
lock nut to the specified torque using a valve
adjusting socket. (MB992046)

Tightening torque: 15

± 3 N⋅m

CAUTION

Pay special attention that the tightening torque is
not beyond this valve. If the tightening torque is
beyond the valve, the valve stem would possibly
bend.
9. Turn the crankshaft 360

° clockwise to bring No. 4

cylinder to the top dead centre position.

AK500380 AE

Exhaust valve side

Inlet valve side

10.Measure the valve clearances at the places

indicated by arrows in the illustration. If the
clearance is not within the standard value, repeat
steps 7 and 8 above.

AK202860AB

AK304411AB

10 mm

Semicircular
packing

Cylinder head

ON-VEHICLE SERVICE

ENGINE MECHANICAL

11A-13

11.Apply specified sealant to the section of the semi-

circular packing shown in the illustration.

Specified sealant: 3M ATD Part No. 8660 or
equivalent

12.Install the rocker cover.
13.Install the timing belt cover.
14.Install the injection pipe, the injection pipe to the

specified torque.

Tightening torque: 35

± 5 N⋅m

CAUTION

• The reinstallation histories of the removed

injection pipe are up to five times. To count
how many times the injection pipe is rein-
stalled, record the number of the reinstalla-
tion histories on the service booklet by
adding this latest number of the histories,
which is usually "1", to the previous one. Use
a new injection pipe when the total reinstalla-
tion history numbers reach five times, or
when the injector or common rail is replaced.
In this case, record " a new injector pipe, the
number of the reinstallation histories is zero"
on the service booklet.

• When the injection pipe is reinstalled, confirm

there is no foreign material on the seal sur-
face or in the pipe and then install it not to
deviate from the axis, fitting the seal surface.

15.Install the inlet manifold.
NOTE: Install a new gasket
16.Install the engine air intake pipe.
17.After the ignition switch is in "LOCK" (OFF)

position, connect the M.U.T.-III to the diagnosis
connector.

18.Start the engine, and let it run at idle.
19.Select SPECIAL FUNCTION from the function

menu.

20.Select FUEL LEAKAGE CHECK from SPECIAL

FUNCTION menu to execute the test.

NOTE: During the test, the engine speed and the fuel
pressure is 2, 000 r/min and 180Mpa for 20 seconds
respectively.
21.Confirm there is no fuel leak from the joint for the

injection pipe.

IDLE SPEED CHECK

M1111003503277

1. Set the vehicle to the pre-inspection condition.

AK600277

Diagnosis

connector

MB991827

MB991824

MB991910

<LH drive vehicles>

Diagnosis

connector

MB991827

MB991824

MB991910

<RH drive vehicles>

ON-VEHICLE SERVICE

ENGINE MECHANICAL

11A-14

2. Turn the ignition switch to "LOOK" (OFF) position,

and connect the diagnosis connector to the
M.U.T.-III.

3. Start the engine, and let it run at idle.
4. Check the idle speed.

Standard value:

600

± 50 r/min <Euro 5-M/T>

650

± 50 r/min <Euro 5-A/T>

650

± 50 r/min <Except Euro 5-2WD-except

high rider>

700

± 50 r/min <Except Euro 5-high rider and

4WD>

5. If the idle speed is not within the standard value,

inspect the diesel system (Refer to GROUP 13A

−

Troubleshooting

− Inspection Chart for Diagnosis

Code

P.13A-429

COMPRESSION PRESSURE CHECK

M1111002604058

1. Before inspection, check that the engine oil,

starter and battery are normal. In addition, set the
vehicle to the pre-inspection condition.

2. Remove the engine air intake pipe.
3. Remove the inlet manifold.
4. Remove all of the glow plugs.

AK500382

Crank angle
sensor connector

5. Disconnect the crank angle sensor connector.

NOTE: Doing this will prevent carrying out fuel
injection.

6. Cover the glow plug hole with a shop towel etc.,

and after the engine has been cranked, check that
no foreign material is adhering to the shop towel.

CAUTION

• Keep away from the glow plug hole when

cranking.

•

AK500383AB

Compression
gauge

If compression is measured with water, oil,
fuel, etc., that has come from cracks inside
the cylinder, these materials will become
heated and will gush out from glow plug hole,
which is dangerous.

7. Set compression gauge to one of the glow plug

holes.

8. Crank the engine and measure the compression

pressure.

ON-VEHICLE SERVICE

ENGINE MECHANICAL

11A-15

Standard value (at engine speed of 250 r/

min):

2,400 kPa <Euro 5>
2,500 kPa <Except Euro 5>

Limit (at engine speed of 250 r/min):

Minimum 1,650 kPa <Euro 5>
Minimum 1,750 kPa <Except Euro 5>

9. Measure the compression pressure for all the

cylinders, and check that the pressure differences
of the cylinders are below the limit.

Limit: Maximum 300 kPa

10.If there is a cylinder with compression or a

compression difference that is outside the limit,
pour a small amount of engine oil through the
glow plug hole, and repeat the operations in steps
(8) and (9).
(1) If the compression increases after oil is added,

the cause of the malfunction is a worn or
damaged piston ring and/or cylinder inner
surface.

(2) If the compression does not rise after oil is

added, the cause is a burnt or defective valve
seat, or pressure is leaking from the gasket.

11.Connect the crank angle sensor connector.
12.Install the glow plugs.

Tightening torque: 17

± 2 N⋅m

13.Install the inlet manifold.
NOTE: Install a new gasket.
14.Install the engine air intake pipe.

AK600277

Diagnosis

connector

MB991827

MB991824

MB991910

<LH drive vehicles>

Diagnosis

connector

MB991827

MB991824

MB991910

<RH drive vehicles>

15.Use the M.U.T.-III to erase the diagnosis codes.

NOTE: This will erase the diagnosis code result-
ing from the crank angle sensor connector being
disconnected.

TIMING BELT B TENSION ADJUSTMENT

M1111004900031

1. Remove timing belt upper cover.
2. Turn the crankshaft in the clockwise direction and

check the timing belt around its entire
circumference for abnormalities.

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