SEM270G
Rotor ShaftNJEM0104S0201+Check that the rotor shaft rotates smoothly without any resis-
tance when it is rotated by your fingertips.
+Check that the rotor shaft is not loose when it is moved verti-
cally or horizontally.
Standard value for rotor shaft oil clearance:
0.086 - 0.117 mm (0.0034 - 0.0046 in)
SEM271G
Rotor Shaft End PlayNJEM0104S0202Place a dial gauge at the rotor shaft end in the axial direction to
measure the end play.
Standard: 0.036 - 0.090 mm (0.0014 - 0.0035 in)
SEM272G
Turbine WheelNJEM0104S0203+Check that there is no oil adhesion.
+Check that there is no carbon accumulation.
+Check that blades of the turbine wheel are not bent or broken.
+Check that the turbine wheel does not interfere with the turbine
housing.
SEM273G
Compressor WheelNJEM0104S0204+Check that there is no oil adhesion inside the air inlet.
+Check that the compressor wheel does not interfere with the
compressor housing.
+Check that the wheel is not bent or broken.
SEM274G
Wastegate Valve ActuatorNJEM0104S0205+Connect the handy pump to the actuator, and check that the
rod strokes smoothly in compliance with the following pres-
sure.
+Pressure to be applied at actuator part to move rod end as
follows:
Standard (Pressure/rod stroke amount):
115.44 - 120.76 kPa (1,154 - 1,208 mbar, 866.0 - 906.0
mmHg, 34.1 - 35.7 inHg)/0.38 mm (0.0150 in)
140.54 - 149.86 kPa (1,405 - 1,498 mbar, 1,054.3 -
1,124.2 mmHg, 41.5 - 44.3 inHg)/4.0 mm (0.157 in)
EXHAUST MANIFOLD, TURBOCHARGERYD
Inspection (Cont'd)
EM-114
Trouble Diagnosis of Turbocharger=NJEM0104S0206Preliminary check:
+Check that the engine oil level is between MIN and MAX of the
dipstick. (When the engine oil amount is more than MAX, the
oil flows into the inlet duct through the blow-by gas passage,
and the turbocharger is misjudged failure.)
+Ask the customer if he/she always runs the vehicle in idle
engine speed to cool the oil down after driving.
+Replace the turbocharger assembly when any malfunction is
found after unit inspections specified in the table below.
+If no malfunction is found after the unit inspections, judge that
the turbocharger body has no failure. Check the other parts
again.
Inspection item Inspection resultSymptom (when each inspection
item meets each inspection result)
Oil
leakageSmoke NoiseInsuffi-
cient
power/
accel-
eration
failure
Turbine wheelOil leaks.n
nn
Carbon is accumulated.n
jj
Friction with housing.nj
j
Blades are bent or broken.
Compressor wheelInside the air inlet is seriously contami-
nated by oil.jj
Friction with housing.njj
Blades are bent or broken.
After checking both turbine and compressor,
inspect rotor shaft end play.There is resistance when the rotor shaft
is rotated by your fingertips.nnj
The rotor shaft sometimes does not
rotate by your fingertips.
There is too much play in the bearing.nnjn
Oil return portCarbon or sludge is accumulated in the
waste oil hole.n
nn
: Large possibility
j: Medium possibility
n: Small possibility
EXHAUST MANIFOLD, TURBOCHARGERYD
Inspection (Cont'd)
EM-115
JEM152G
+For the locations and arrangement of intake and exhaust
valves, refer to the figure.
JEM153G
5. Remove valve oil seals.
+Use a valve oil seal puller (SST) for removal.
6. Remove valve spring seats.
7. When removing valve seats, check valve seat contact. Refer
to EM-125.
8. Before removing valve guides, check valve guide clearance.
Refer to EM-123, ªVALVE GUIDE CLEARANCEº.
9. Remove glow plugs.
+To avoid damage, glow plugs should be removed only
when required.
+Handle with care to avoid applying shock. (When dropped
from approx. 100 mm (3.94 in) or higher, always replace
with a new one.)
SEM496G
InspectionNJEM0065CYLINDER HEAD DISTORTIONNJEM0065S01Clean surface of cylinder head.
Use a reliable straightedge and feeler gauge to check the flatness
of cylinder head surface.
Check along six positions shown in the figure.
Head surface flatness: Limit 0.04 mm (0.0016 in)
If beyond the specified limit, resurface or replace it.
The limit for cylinder head resurfacing is determined by the
cylinder block resurfacing.
Resurfacing limit:
Amount of cylinder head resurfacing is ªAº.
Amount of cylinder block resurfacing is ªBº.
The maximum limit: A+ B = 0.07 mm (0.0028 in)
After resurfacing cylinder head, check that camshaft rotates freely
by hand. If resistance is felt, cylinder head must be replaced.
Nominal cylinder head height:
153.9 - 154.1 mm (6.059 - 6.067 in)
CYLINDER HEADYD
Disassembly (Cont'd)
EM-121
JEM158G
SEM301G
3. Heat cylinder head to 110 to 120ÉC (230 to 248ÉF) by soaking
in heated oil.
4. Sufficiently cool valve seat with dry ice. Force fit valve seat into
cylinder head.
WARNING:
Do not touch cold valve seat with your bare hands.
5. Cut or grind valve seat using suitable tool to the specified
dimensions as shown in SDS (EM-163).
CAUTION:
Use the valve seat cutter properly. Securely gripping the cut-
ter handle with both hands, press the cutter down onto the
entire circumference of the contacting surface and finish cut-
ting at one time. Improper pressing of the cutter or cutting in
several steps may result in staged surface on the valve seat.
6. After cutting, lap valve seat with abrasive compound.
7. Check valve seating condition. Refer to EM-125, ªValve Seatsº.
JEM253G
8. Use a depth gauge to measure the distance between the
mounting surface of the cylinder head spring seat and the
valve stem end. If the distance is shorter than specified, repeat
step 5 above to adjust it. If it is longer, replace the valve seat
with a new one.
Valve seat resurface limit ªLº:
Intake 36.53 - 36.98 mm (1.4382 - 1.4559 in)
Exhaust 36.53 - 37.01 mm (1.4382 - 1.4571 in)
CYLINDER HEADYD
Inspection (Cont'd)
EM-126
Piston protrusion mm (in)Gasket thickness*
mm (in)Identification
Number of holes
Less than 0.255 (0.0100) 0.900 (0.0354) 1
Less than 0.255 - 0.280
(0.0100 - 0.0110)0.925 (0.0364) 2
Less than 0.280 - 0.305
(0.0110 - 0.0120)0.950 (0.0374) 3
Less than 0.305 - 0.330
(0.0120 - 0.0130)0.975 (0.0384) 4
Less than 0.330 - 0.355
(0.0130 - 0.0140)1.000 (0.0394) 5
More than 0.355 (0.0140) 1.025 (0.0404) 6
*: Measured with head bolts tightened
JEM171G
CYLINDER HEAD BOLT DEFORMATION CHECKNJEM0067S02+Measure the outer diameter of threaded area, d1 and d2, at the
points specified in the figure.
+When the necked point is identified at a point other than speci-
fied points, measure at the point as d1.
+Calculate the difference between d1 and d2. If the value
exceeds the limit, replace with new ones.
Limit: 0.15 mm (0.0059 in)
JEM172G
CYLINDER HEAD-TO-BLOCK DIFFERENCE CHECKNJEM0067S03+After installing cylinder head, measure dimension from the
front end surface of cylinder block to that of cylinder head.
Standard: 23.53 - 24.07 mm (0.9264 - 0.9476 in)
+If the difference is out of the range, check fitting of dowel pins
and cylinder head.
JEM167G
LIQUID GASKET APPLICATION ON REAR CHAIN CASENJEM0067S04Apply a continuous bead of specified liquid gasket (Refer to EM-76,
ªLiquid Gasket Application Procedureº.) on the surface shown in
the figure.
A: Apply bead so that it does not protrude into oil passage.
B: Minimize the overlapping area of the bead, with start and end
areas of bead as shown in the figure.
Apply so that the portion marked * comes at an external location
but cannot be viewed externally after engine is assembled.
CYLINDER HEADYD
Installation (Cont'd)
EM-130
JEM149G
JEM166G
CYLINDER HEAD INSTALLATIONNJEM0067S05+Tighten bolts in numerical order as shown in the figure accord-
ing to the following procedure:
1. Apply engine oil to bolt threads and seat surfaces.
2. Tighten bolts to 29 to 38 N´m (2.9 to 3.9 kg-m, 21 to 28 ft-lb).
3. Tighten 180É to 185É [target: 180É] (angular tightening).
4. Loosen completely to 0 N´m (0 kg-m, 0 in-lb) in the reverse
order of that shown in the figure.
5. Tighten bolts to 35 to 44 N´m (3.5 to 4.5 kg-m, 26 to 32 ft-lb).
6. Tighten 90É to 95É [target: 90É] (angular tightening).
7. Tighten another 90É to 95É [target: 90É] (angular tightening).
+When an angle wrench is not used, paint an alignment
mark on the head of cylinder head bolt and cylinder head
surface before tightening. Check the angle with a protrac-
tor.
GLOW PLUG INSTALLATIONNJEM0067S06+To avoid damage, glow plugs should be removed only
when required.
+Handle with care to avoid applying shock. (When dropped
from approx. 100 mm (3.94 in) or higher, always replace
with a new one.)
+Before installing, remove carbon depositing on mounting hole
of glow plug with a reamer.
JEM173G
CAMSHAFT INSTALLATIONNJEM0067S071. Install valve lifters and adjusting shims.
+Install in the correct locations (the same places as before
removal).
2. Install camshafts.
+Identify camshafts by the paint position and screw hole at the
rear end.
Camshaft RH: Paint is at position A without screw hole.
Camshaft LH: Paint is at position B with screw hole.
SEM516G
+Install so that knock pins are positioned in the directions shown
in the figure.
CYLINDER HEADYD
Installation (Cont'd)
EM-131
JEM175G
3. Install camshaft brackets.
+Install correctly, identifying brackets by the journal No. and
front mark on top surface.
JEM160G
4. Tighten bolts in the order shown in the figure according to the
following procedure:
a. Tighten to 2.0 N´m (0.2 kg-m, 17 in-lb).
+Make sure camshaft thrusting parts (on rear side) securely fit
in their mating parts on the cylinder head.
b. Tighten to 6 N´m (0.6 kg-m, 52 in-lb).
c. Tighten to 12 to 13 N´m (1.2 to 1.4 kg-m, 9 to 10 ft-lb).
5. Install camshaft sprockets.
+Camshaft sprockets are commonly used for RH and LH.
+Align camshaft sprocket and dowel pin on camshaft, and
install.
+Holding the hexagonal part of camshaft with a wrench, tighten
bolt securing camshaft sprocket.
6. Before installing spill tube after installing secondary timing
chain, check and adjust valve clearance. Refer to EM-132,
ªValve Clearanceº.
7. Hereafter, install in the reverse order of removal.
JEM176G
Valve ClearanceNJEM0068CHECKINGNJEM0068S01Check valve clearance while engine is cold and not running.
1. Set the No. 1 piston to TDC on its compression stroke.
+Turn crankshaft pulley clockwise so that the knock pin on cam-
shaft LH faces straight above. (No position indicator, etc. is
provided on the crankshaft pulley.)
JEM177G
2. Put an alignment mark with paint, etc. on the crankshaft pul-
ley and on the oil pump as an angle indicator.
CYLINDER HEADYD
Installation (Cont'd)
EM-132
SEM189G
+Make sure that support is stable with the use of safety
blocks.
16. Install hooks of lifting chain into engine slingers and tighten
chain so that engine still remains on transmission jacks with-
out being lifted up.
17. Remove engine mount insulator RH.
18. Remove through-bolt of engine mount insulator LH.
19. Remove bolts securing center member at front and rear.
JEM190G
20. Carefully lower transmission jacks in accordance with the low-
ering pace of the hoist, and remove engine and transaxle
assembly from vehicle.
+While working, check that no parts of engine assembly
interfere with adjacent parts on the vehicle.
+While working, make sure that parts requiring disconnec-
tion are not left connected, and that no parts interfere with
vehicle.
+To prevent vehicle from falling down, perform operation
carefully so that the center of gravity of the vehicle will not
shift.
21. Remove center member.
+Before starting removal operation, first place the assem-
bly on a level surface and securely support the bottom
surface with wood blocks. Using a hoist, lift engine
slingers, and make sure the assembly is stable.
22. Separate engine and transaxle.
INSTALLATIONNJEM0069S02Install in the reverse order of removal, observing the following:
+While installing, be careful to keep mount insulators free of oil
smear and damage.
+When parts require specified installation directions/positions,
install by using the identifying marks indicating up or front.
+While keeping the mount insulators free of twists or distortions,
start tightening from the through-bolt on the engine mount
insulator LH. This mount is used as the reference position.
ENGINE ASSEMBLYYD
Removal and Installation (Cont'd)
EM-138