ENGINE ASSEMBLY
EM-225
[YD22DDTi]
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INSPECTION AFTER INSTALLATION
Inspection for Leaks
The following are procedures for checking fluids leak, lubricates leak and exhaust gases leak.
Before starting engine, check oil/fluid levels including engine coolant and engine oil. If less than required
quantity, fill to the specified level. Refer to MA-17, "
RECOMMENDED FLUIDS AND LUBRICANTS" .
Before starting engine, bleed air from fuel piping. Refer to FL-18, "Air Bleeding" .
Run engine to check for unusual noise and vibration.
Warm up engine thoroughly to make sure there is no leakage of fuel, exhaust gases, or any oil/fluids
including engine oil and engine coolant.
Bleed air from lines and hoses of applicable lines, such as in cooling system.
After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to the
specified level, if necessary.
Summary of the inspection items:
* Transmission/transaxle/CVT fluid, power steering fluid, brake fluid, etc.Item Before starting engine Engine running After engine stopped
Engine coolant Level Leakage Level
Engine oil Level Leakage Level
Other oils and fluid* Level Leakage Level
Fuel Leakage Leakage Leakage
Exhaust gases — Leakage —
ENGINE ASSEMBLY
EM-229
[YD22DDTi]
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9. Remove power steering oil pump with piping connected from engine. Move it aside on suspension mem-
ber. Refer to PS-37, "
HYDRAULIC LINE" .
10. Remove front engine mounting and rear engine mounting through-bolts to remove suspension member.
11. Remove starter motor. Refer to SC-23, "
STARTING SYSTEM" .
12. Separate engine and transaxle and transfer assembly. Refer to MT-19, "
TRANSAXLE ASSEMBLY" .
INSTALLATION
Install in the reverse order of removal.
Do not allow engine oil to get on mounting insulator. Be careful not to damage mounting insulator.
When installation directions are specified, install parts according to the direction marks on them referring
to figure of components. Refer to EM-222, "
ENGINE ASSEMBLY" .
Make sure that each mounting insulator is seated properly, and tighten mounting bolts and nuts.
INSPECTION AFTER INSTALLATION
Inspection for Leaks
The following are procedures for checking fluids leak, lubricates leak and exhaust gases leak.
Before starting engine, check oil/fluid levels including engine coolant and engine oil. If less than required
quantity, fill to the specified level. Refer to MA-17, "
RECOMMENDED FLUIDS AND LUBRICANTS" .
Before starting engine, bleed air from fuel piping. Refer to FL-18, "Air Bleeding" .
Run engine to check for unusual noise and vibration.
Warm up engine thoroughly to make sure there is no leakage of fuel, exhaust gases, or any oil/fluids
including engine oil and engine coolant.
Bleed air from lines and hoses of applicable lines, such as in cooling system.
After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to the
specified level, if necessary.
Summary of the inspection items:
* Transmission/transaxle/CVT fluid, power steering fluid, brake fluid, etc.Item Before starting engine Engine running After engine stopped
Engine coolant Level Leakage Level
Engine oil Level Leakage Level
Other oils and fluid* Level Leakage Level
Fuel Leakage Leakage Leakage
Exhaust gases — Leakage —
CYLINDER BLOCK
EM-233
[YD22DDTi]
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6. Drain engine coolant by removing drain plug from inside of
engine.
7. Remove the following parts and related parts. (Only major parts are listed.)
Intake manifold (Refer to EM-146, "INTAKE MANIFOLD" .)
Exhaust manifold and turbocharger (Refer to EM-151, "Removal and Installation" .)
Rocker cover (Refer to EM-178, "ROCKER COVER" .)
Fuel injector (Refer to EM-167, "Removal and Installation" .)
Oil pan and oil strainer (Refer to EM-157, "OIL PAN AND OIL STRAINER" .)
Water pump (Refer to CO-43, "WATER PUMP" .)
Thermostat and water piping (Refer to CO-45, "THERMOSTAT AND WATER PIPING" .)
Vacuum pump (Refer to EM-163, "VACUUM PUMP" .)
Secondary timing chain (Refer to EM-193, "Removal and Installation" .)
Primary timing chain (Refer to EM-198, "PRIMARY TIMING CHAIN" .)
Fuel pump (Refer toEM-171, "FUEL PUMP" .)
Camshaft (Refer to EM-180, "Removal and Installation" .)
Cylinder head (Refer to EM-210, "Removal and Installation" .)
Oil cooler (Refer to LU-28, "OIL COOLER" .)
Accessory, accessory bracket and mount brackets
8. Remove fuel pump bracket.
9. Remove rear oil seal retainer.
Insert a flat-bladed screwdriver between main bearing cap and rear oil seal retainer to remove retainer.
10. Remove rear oil seal from rear oil seal retainer.
Punch out with a flat-bladed screwdriver.
CAUTION:
Be careful not to damage rear oil seal retainer.
11. Remove piston and connecting rod assembly as follows:
Before removing piston and connecting rod assembly, check connecting rod side clearance. Refer to
EM-246, "
CONNECTING ROD SIDE CLEARANCE" .
a. Move crankshaft pin to be removed to approximately BDC.
b. Remove connecting rod caps.
c. Using the grip of a hammer, press the piston and connecting rod
assembly out to cylinder head side.
PBIC2439E
JEM195G
CYLINDER BLOCK
EM-235
[YD22DDTi]
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c. Using rod with outer diameter of 26 mm (1.02 in), press piston
pins out.
15. Remove main bearing cap bolts.
With a TORX socket (size: E14, Commercial Service Tool),
loosen main bearing cap bolts in several stages in reverse
order of that shown in the figure and remove them.
Before loosening main bearing cap bolts, measure crankshaft
end play. Refer to EM-245, "
CRANKSHAFT END PLAY" .
16. Remove main bearing caps.
Using main bearing cap bolts, remove by rocking bearing cap
back and forth.
17. Remove crankshaft.
18. Remove main bearings and thrust bearings from cylinder block and main bearing caps.
CAUTION:
Check the correct installation locations of removed parts. Store them so they do not get mixed up.
19. Remove oil jet.
20. Remove oil jet relief valve.
ASSEMBLY
1. Blow air sufficiently to inside engine coolant passage, engine oil passage, crankcase and cylinder bore to
remove foreign matter.
CAUTION:
Use a goggles to protect your eye.
EMM0072D
JEM200G
JEM201G
CYLINDER BLOCK
EM-237
[YD22DDTi]
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7. Install main bearing caps.
Identify main bearing caps by the punched mark. Install cor-
rectly matching the journal No. on the bearing cap and the
journal with the front mark facing forward.
Main bearing caps are commonly processed with the cylinder
block. Therefore, caps and cylinder block should be replaced
as a set.
8. Check the main bearing cap bolts for deformation. Refer to EM-254, "
MAIN BEARING CAP BOLT
DEFORMATION" .
9. With the TORX socket (size: E14, commercial service tool),
tighten the main bearing cap bolts according to the following
procedure:
a. Apply engine oil to the threaded part and seat surface of each
bolt.
b. Tighten all bolts in numerical order shown in the figure.
c. Put alignment marks (with paint) on each bolt and the main
bearing cap, all in the same direction. (When using a protractor)
d. Then, tighten 90 degrees. (angle tightening)
CAUTION:
Always use either the angle wrench (special service tool) or
protractor during angle tightening. Avoid tightening based
on visual checks alone.
After tightening bolts to specified torque, make sure that
crankshaft rotates smoothly.
Check crankshaft end play. Refer to EM-245, "CRANKSHAFT
END PLAY" .
10. Check the outer diameter of connecting rod bolts. Refer to EM-
254, "CONNECTING ROD BOLT DEFORMATION" .
11. Install piston to connecting rod.
a. Using the snap ring pliers, install snap rings to groove on piston rear side.
Fit snap ring correctly into grooves.
b. Install pistons to connecting rods.
Using the industrial use dryer, heat pistons up to approx. 60 to
70°C (140 to 158°F) until piston pin can be pressed down by
finger touch. Then insert piston pin into piston and connecting
rod from front side of piston toward rear.
JEM225G
: 27 N·m (2.8 kg-m, 20 ft-lb)
JEM200G
JEM226G
PBIC0089E
EM-238
[YD22DDTi]
CYLINDER BLOCK
Assemble piston and connecting rod with front mark of piston
head and cylinder No. stamped on connecting rod being posi-
tioned as shown in the figure.
c. Install snap ring to front side of piston.
Refer to above step a for precaution on snap ring installation.
After installation, check connecting rods for smooth move-
ment.
12. Use the piston ring expander (commercial service tool) to install piston rings.
CAUTION:
When installing, prevent piston from being damaged.
Install top ring and second ring with punched mark surfaces
facing upward.
Install rings so that three closed gap position 120 degrees
apart one another.
Closed gaps do not need to face in a specific directions, as
long as each are positioned 120 degrees apart.
13. Install connecting rod bearing to connecting rod and cap.
While installing connecting rod bearing, apply engine oil to
bearing surfaces (inside). Do not apply engine oil to rear sur-
faces, but clean them completely.
Align protrusions on connecting rod bearings with connecting
rod cut-outs to install connecting rod bearings.
14. Install piston and connecting rod assembly to crankshaft.
Move crankshaft pin to be assembled to BDC.
Align cylinder position with cylinder No. on connecting rod to
install piston and connecting rod assembly.
Apply engine oil sufficiently to the cylinder bore, piston and
crankshaft pin.
Using the piston ring compressor (special service tool) or suit-
able tool, install piston and connecting rod assembly with front
mark on piston head facing toward the front side of engine.
CAUTION:
When removing piston and connecting rod assembly,
prevent the big end of connecting rod from interfering with oil jet.
Be careful not to damage the cylinder wall and crankshaft pin, resulting from an interference
of the connecting rod big end.
MBIA0024E
Punched mark:
Top ring : RTop
Second ring : R2nd
JEM228G
JEM229G
PBIC1619E
CYLINDER BLOCK
EM-239
[YD22DDTi]
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15. Install connecting rod caps and mounting nuts.
Align cylinder No. stamped on connecting rod with that on cap
to install connecting rod cap.
Make sure that the front mark on connecting rod cap faces
towards the front of the engine.
16. Tighten connecting rod nuts according to the following procedure:
a. Apply engine oil on bolt threads and seat surface of nuts.
b. Tighten bolts.
c. Loosen completely.
d. Tighten bolts.
e. Tighten 120 degrees. (angle tightening)
Always use either the angle wrench (special service tool)
or protractor during angle tightening. Avoid tightening
based on visual checks alone.
After tightening nuts, make sure that crankshaft rotates
smoothly.
Check connecting rod side clearance. Refer to EM-246,
"CONNECTING ROD SIDE CLEARANCE" .
17. Press fit rear oil seal into rear oil seal retainer.
Using the drift [105 mm (4.13 in) dia.], press fit so that the
dimension is as specified in the figure.
Avoid inclined fitting. Force fit perpendicularly.
MBIA0024E
: 29.4 N·m (3.0 kg-m, 22 ft-lb)
: 0 N·m (0 kg-m, 0 in-lb)
: 19.6 N·m (2.0 kg-m, 14 ft-lb)
JEM231G
JEM232G
CYLINDER BLOCK
EM-247
[YD22DDTi]
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PISTON RING SIDE CLEARANCE
Using feeler gauge, measure the side clearance between piston
ring and piston ring groove.
Unit: mm (in)
Align top ring and external surface of piston. Measure lower side
clearance of top ring with top ring pressed onto upper side of
ring groove.
If side clearance exceeds the limit, replace piston ring.
Check clearance again. If side clearance still exceeds the limit,
replace piston.
PISTON RING END GAP
Make sure that cylinder bore diameter is within the specifica-
tions. Refer to EM-250, "
PISTON TO CYLINDER BORE
CLEARANCE" .
Lubricate with new engine oil to piston and piston ring, and then
insert piston ring until middle of cylinder with piston, and mea-
sure piston ring end gap with feeler gauge.
Unit: mm (in)
If out of the limit, replace piston ring. If gap still exceeds the limit even with a new ring, re-bore cylinder
and use oversized piston and piston ring. Refer to EM-250, "
PISTON TO CYLINDER BORE CLEAR-
ANCE" .
Item Standard Limit
Top ring 0.050 - 0.090 (0.0020 - 0.0035) 0.2 (0.008)
2nd ring 0.050 - 0.090 (0.0020 - 0.0035) 0.1 (0.004)
Oil ring 0.030 - 0.070 (0.0012 - 0.0028) —
SEM024AA
FEM100
Item Standard Limit
Top ring 0.20 - 0.30 (0.0079 - 0.0118)
1.0 (0.039) 2nd ring 0.31 - 0.51 (0.0122 - 0.0201)
Oil ring 0.30 - 0.55 (0.0118 - 0.0217)
FEM101