Mitsubishi Space Star. Manual — part 12
ENGINE <F9Q1> –
Sealants/Special Tools
11C-3
SEALANTS
Item
Specified sealant
Remark
Oil pan
MITSUBISHI GENUINE PART
MD970389 or equivalent
Semi-drying sealant
Beam cam cap
MD970389 or equivalent
Fly wheel bolt
3M stud locking 4170 or equivalent
Anaerobic sealant
SPECIAL TOOLS
Tool
Number
Name
Use
MB991502
MUT
-II
sub
assembly
Measuring the drive belt tension
Checking the idle speed
MB991668
Belt tension meter
set
Measuring the drive belt tension
(Used together with the MUT-
II
)
MD998747
Crankshaft pulley
holder
Holding the crankshaft pulley
MB991614
Angle gauge
Tightening of the crankshaft pulley bolt
Tightening of the cylinder head bolts
MB990767
End yoke holder
Holding the camshaft sprocket
MD998719
Crankshaft pulley
holder pin
MB996042
Oil seal installer
Installation of camshaft oil seal
ENGINE <F9Q1> –
Special Tools
11C-4
Tool
Use
Name
Number
MB996015
Flywheel stopper
Locking the flywheel
MB996038
Oil seal installer
Installation of the crankshaft rear oil seal
MB996040
Oil seal installer
Installation of the crankshaft front oil seal
GENERAL
SERVICE
TOOL
MZ203827
Engine lifter
Supporting the engine assembly during
removal and installation of the transmission
MB991453
Engine hanger
assembly
ENGINE <F9Q1> –
On-vehicle Service
11C-5
ON-VEHICLE SERVICE
VALVE CLEARANCE CHECK AND ADJUSTMENT
1.
The valve clearances have to be checked/adjusted in the
following sequence.
Cylinder at point of balance
Cylinder being checked/
adjusted
1
4
2
3
3
2
4
1
2.
Measure the valve clearance.
Standard value:
Cold engine
Checking
Adjusting
Intake valve mm
0.15 – 0.20
0.20
Exhaust valve mm
0.35 – 0.45
0.40
3.
If the valve clearance is outside the standard value, adjust
by replacing the tappets using the following procedure.
4.
Re-measure the places which were outside the standard
value, and make a note of the measurement value.
5.
Measure the thickness of the tappet (X) with a micrometer.
6.
Select a tappet which will bring the valve clearance to then
standard value based on the measurement value.
Thickness of tappet for adjustment =
Thickness of tappet installed during inspection (X)
+ (measurement value – standard value)
NOTE
(1) Measure the thickness of the tappet pad with a
micrometer.
(2) Always use new tappets.
(3) Tappets are available in thickness from 7.550 mm
to 8.150 mm, increasing by increments of 0.025 mm.
7.
Remove the camshaft, and then install the selected tappet.
8.
Install the camshaft.
9.
After rotating the camshaft once, check that the valve
clearances are at the standard values.
Cylinder at point
of balance
Cylinder being
checked/adjusted
Micrometer
Adapter
Thickness
(X)
ENGINE <F9Q1> –
On-vehicle Service
11C-6
IDLE SPEED CHECK
1.
Before inspection, set the vehicle to the pre-inspection
condition.
2.
Turn the ignition switch to the “LOCK” (OFF) position and
the connect the MUT-
II
to the diagnosis connector.
3.
Start the engine and check that the idle speed is at the
standard value.
Standard value: 750
±
10 r/min
4.
If the idle speed is not at the standard value, refer to
GROUP 13D – Troubleshooting.
COMPRESSION PRESSURE CHECK
1.
Before inspection, check that the engine oil, starter and
battery are normal. In addition, set the vehicle to the
pre-inspection condition.
2.
Disconnect the all injector connector.
NOTE
Doing this will prevent carrying out fuel injection.
3.
Remove all of the glow plugs.
4.
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
(1) Keep away from the glow plug hole when cranking.
(2) If compression is measured with water, oil, fuel,
etc., that has come from cranks inside the cylinder,
these materials will become heated and will gush
out from glow plug hole, which is dangerous.
5.
Set compression gauge to one of the glow plug holes.
6.
Crank the engine and measure the compression pressure.
Limit: Min. 2000 kPa
7.
Measure the compression pressure for all cylinders, and
check that the pressure differences of the cylinders are
below the limit.
Limit: Max. 400 kPa
8.
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 6 and 7.
(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.
9.
Install the glow plugs.
10. Connect the injector connectors.
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