EM-82
< REMOVAL AND INSTALLATION >[HR16DE]
CYLINDER HEAD
2. Drive out valve guide with a press [under a 20 kN (2 ton, 2.2 US
ton, 2.0 lmp ton) force] or suitable tool.
WARNING:
Cylinder head contains heat; when working, wear protective
equipment to avoid getting burned.
3. Ream cylinder head valve guide hole with a suitable tool.
4. Heat cylinder head to 110 to 130 °C (230 to 266 °F) by soaking in
heated oil.
5. Using a suitable tool, press valve guide (1) from camshaft side of cylinder head (2) to dimensions as shown.
WARNING:
Cylinder head contains heat; when working, wear protective
equipment to avoid getting burned.
6. Apply reamer finish to valve guide with a suitable tool.
SEM931C
Valve guide hole diameter (for service parts): Intake and exhaust: 9.175 - 9.201 mm (0.3612 - 0.3622 in)
SEM932C
SEM008A
Projection “H” : 11.4 - 11.8 mm (0.448 - 0.464 in)
PBIC3217J
Standard : 5.000 - 5.018 mm (0.1968 - 0.1975 in)
SEM932C
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CYLINDER HEADEM-83
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VALVE SEAT CONTACT
• After confirming that the dimensions of valve guides
and valves are within the specifications, perform this
procedure.
• Apply prussian blue (or white lead) onto contacting surfac e of valve seat to check the condition of the valve
contact on the surface.
• Check if the contact area band is continuous all around the circum- ference.
• If not, grind to adjust valve fitting and check again. If the contacting surface still has “NG” conditions (B) even after the recheck,
replace valve seat. Refer to EM-78, "
Disassembly and Assembly".
VALVE SEAT REPLACEMENT
When valve seat is removed, replace with oversized [0.5 mm (0.020 in)] valve seat.
1. Bore out old seat until it collapses. Boring shoul d not continue beyond the bottom face of the seat recess
in cylinder head. Set the machine depth stop to ensure this.
CAUTION:
Prevent scoring cylinder head by excessive boring.
2. Ream cylinder head recess diameter for service valve seat.
• Be sure to ream in circles concentric to the valve guide center.This will enable valve seat to fit correctly.
3. Heat cylinder head to 110 to 130 °C (230 to 266 °F) by soaking in
heated oil.
4. Provide valve seats cooled well with dry ice. Press-fit valve seats into cylinder head. WARNING:
Cylinder head contains heat; when working, wear protective equipment to avoid getting burned.
CAUTION:
Avoid directly touching cold valve seats.
(A) : OK
JPBIA0187ZZ
Oversize [0.5 mm (0.020 in)]
Intake : 32.500 - 32.527 mm (1.2795 - 1.2805 in)
Exhaust : 26.400 - 26.427 mm (1.0393 - 1.0404 in)
SEM795A
SEM008A
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EM-84
< REMOVAL AND INSTALLATION >[HR16DE]
CYLINDER HEAD
5. Using a suitable tool finish valve seat to the specified dimen-
sions. For dimensions, refer to MA-11, "
Fluids and Lubricants".
CAUTION:
When using a valve seat cutter, firmly grip the cutter handle
with both hands. Then, pr ess the contacting surface evenly
around the valve seat to cut in a single attempt. Improper
pressure or cutting several times may result in wavy valve
seat.
6. Using compound, grind to adjust valve fitting.
7. Check again for normal contact. Refer to "VALVE SEAT CONTACT".
VALVE SPRING SQUARENESS
• Set a tri-square (A) along the side of valve spring and rotate spring. Measure the maximum clearance between the top of spring and
tri-square.
• If it exceeds the limit, replace valve spring.
VALVE SPRING DIMENSIONS AND VALVE SPRING PRESSURE LOAD
• Check valve spring pressure with valve spring seat installed at the specified spring height.
CAUTION:
Do not remove valve spring seat from valve spring.
• If the installation load or load with valve open is out of the stan- dard, replace valve spring (with valve spring seat).
INSPECTION AFTER INSTALLATION
• Before starting engine, check oil/fluid levels, incl uding engine coolant and engine oil. If less than required
quantity, fill to the specified level. Refer to MA-11, "
Fluids and Lubricants".
• Use procedure below to check for fuel leaks.
• Turn ignition switch ON (with engine stopped). With fuel pressure applied to fuel piping, check for fuel leaks
at connection points.
• Start engine. With engine speed increased, che ck again for fuel leaks at connection points.
• Run engine to check for unusual noise and vibration.
NOTE:
If hydraulic pressure inside timing chain tensioner drops after removal and installation, slack in the guide
may generate a pounding noise during and just after engine start. However, this is normal. Noise will stop
after hydraulic pressure rises.
• Warm up engine thoroughly to make sure there are no l eaks of fuel, exhaust gas, or any oils/fluids including
engine oil and engine coolant.
• Bleed air from passages in lines and hoses, such as in cooling system.
• After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to spec- ified level, if necessary.
• Summary of the inspection items:
SEM934C
(B) : Contact
Limit : Refer to EM-119, "Cylinder head".
PBIC3219J
Standard : Refer to EM-119, "Cylinder head".
SEM113
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CYLINDER BLOCKEM-107
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• Measure the dimensions at four different points as shown on each
main journal and pin journal using suitable tool.
• Out-of-round is indicated by the difference in dimensions between
(a) and (b) at (c) and (d).
• Taper is indicated by the diff erence in dimension between (c) and
(d) at (a) and (b).
• If the measured value exceeds the limit, correct or replace crankshaft.
• If corrected, measure the bearing oil clearance of the corrected main journal and/or pin journal. Then select main bearing and/or connecting rod bearing. Refer to EM-125, "
Connecting Rod Bearing" and/or EM-124,
"Main Bearing".
CRANKSHAFT RUNOUT
• Place a V-block on a precise flat table to support the journals on both ends of the crankshaft.
• Place a suitable tool (A) straight up on the No. 3 journal.
• While rotating crankshaft, read the movement of the pointer on the
suitable tool. (Total indicator reading)
• If it exceeds the limit, replace crankshaft.
CONNECTING ROD BEARING OIL CLEARANCE
Method by Calculation
• Install connecting rod bearings (2) to connecting rod (3) and con- necting rod cap (1), and tighten connecting rod cap bolts to the
specified torque. Refer to EM-94, "
Disassembly and Assembly".
• Measure the inner diameter of connecting rod bearing using suit- able tool.
(Bearing oil clearance) = (Connecting rod bearing inner diameter)
– (Crankshaft pin journal diameter)
• If clearance exceeds the limit, select proper connecting rod bearing according to connecting rod big end diameter and crankshaft pin journal diameter to obtain specified bearing oil clearance. Refer to EM-125,
"Connecting Rod Bearing".
Method of Using Plastigage
• Remove engine oil and dust on crankshaft pin and the surfaces of each bearing completely.
• Cut a plastigage slightly shorter than the bearing width, and place it in crankshaft axial direction, avoiding oil
holes.
• Install connecting rod bearings to connecting rod and c ap, and tighten connecting rod cap bolts to the speci-
fied torque. Refer to EM-94, "
Disassembly and Assembly".
CAUTION:
Do not rotate crankshaft. Limit:
Out-of-round [Difference between (a) and (b)]
Taper [Difference between (c) and (d)] : Refer to EM-121, "
Cylinder Block".JPBIA0229ZZ
Standard and Limit : Refer to EM-121, "Cylinder
Block".
PBIC3458J
(A) : Example
(B) : Inner diameter measuring direction
Standard and Limit : Refer to EM-125, "Connecting Rod Bearing".
PBIC3275J
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CYLINDER BLOCKEM-109
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• When main bearing cap is removed after being tightened to the
specified torque with main bearings (1) installed, the tip end of
bearing must protrude (B). Refer to EM-94, "
Disassembly and
Assembly".
• If the standard is not met, replace main bearings.
CONNECTING ROD BEARING CRUSH HEIGHT
• When connecting rod cap is removed after being tightened to the specified torque with connecting rod bearings (1) installed, the tip
end of bearing must protrude (B). Refer to EM-94, "
Disassembly
and Assembly".
• If the standard is not met, replace connecting rod bearings.
MAIN BEARING CAP BOLT OUTER DIAMETER
• Measure the outer diameters (d1) and (d2) at two positions as
shown.
• If reduction appears in places other than (B) range, regard it as (d
2).
• If it exceeds the limit (a large difference in dimensions), replace main bearing cap bolt with a new one.
CONNECTING ROD CAP BOLT OUTER DIAMETER
• Measure the outer diameter (d) at position as shown.
• If reduction appears in a position other than (d), regard it as (d).
• When (d) is less than the limit (when it becomes thinner), replaceconnecting rod cap bolt with a new one.
FLYWHEEL DEFLECTION (M/T models)
(A) : Example
Standard : There must be crush height.
PBIC3279J
(A) : Example
Standard : There must be crush height.
PBIC3279J
(A) : (d1) measuring position
(B) : (d2) measuring position
Limit [(d1) – (d2)]: 0.2 mm (0.0078 in)
PBIC4015E
Limit: 7.75 mm (0.3051 in)
PBIC4016E
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HOW TO SELECT PISTON AND BEARINGEM-111
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HOW TO SELECT PISTON AND BEARING
DescriptionINFOID:0000000012431739
• The identification grade stamped on each part is the
grade for the dimension measured in new condition.
This grade cannot apply to reused parts.
• For reused or repaired parts, measure the dimens ion accurately. Determine the grade by comparing the
measurement with the values of each selection table.
• For details of the measurement method of each part , the reuse standards and the selection method of the
selective fitting parts, refer to the text for the appropriate part.
Connecting Rod BearingINFOID:0000000012431740
WHEN NEW CONNECTING ROD AND CRANKSHAFT ARE USED
1. Apply connecting rod big end diameter grade stamped (C) on connecting rod side face to the row in the “Connecting Rod
Bearing Selection Table”.
2. Apply crankshaft pin journal diameter grade stamped on crank-
shaft front side to the column in the “Connecting Rod Bearing
Selection Table”.
3. Read the symbol at the cross point of selected ro w and column in the “Connecting Rod Bearing Selection
Table”.
4. Apply the symbol obtained to the “Connecting Rod Bearing Grade Table” to select connecting rod bearing.
WHEN CONNECTING ROD AND CRANKSHAFT ARE REUSED
1. Measure the dimensions of the connecting rod big end diameter and crankshaft pin journal diameter indi-
vidually. Refer to EM-102, "
Inspection".
Selection points Selection parts Selection itemsSelection methods
Between cylinder block and
crankshaft Main bearing Main bearing grade (bearing
thickness)Determined by match of cylin-
der block bearing housing
grade (inner diameter of hous-
ing) and crankshaft journal
grade (outer diameter of jour-
nal)
Between crankshaft and con-
necting rod Connecting rod bearing Connecting rod bearing grade
(bearing thickness)Combining service grades for
connecting rod big end diame-
ter and crankshaft pin outer di-
ameter determine connecting
rod bearing selection.
(A) : Oil hole
(B) : Cylinder number
(D) : Front mark
PBIC3756E
(A) : Main journal diameter grade (No. 1 to 5 from left)
(B) : Crankshaft pin journal diameter grade (No. 1 to 4 from left)
PBIC3757E
Revision: August 2015
2016 Versa Note
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HOW TO SELECT PISTON AND BEARINGEM-113
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In grinding crankshaft pin to
use undersize bearings, keep the
fillet R (A) [0.8 - 1.2 mm (0.031 - 0.047 in)].
Main BearingINFOID:0000000012431741
HOW TO SELECT MAIN BEARING
When New Cylinder Block and Crankshaft Are Used
1. “Main Bearing Selection Table” rows correspond to main bearing
housing grade on left side of cylinder block.
• If there is a corrected stamp mark (B) on cylinder block, use itas a correct reference.
2. Apply main journal diameter grade stamped on crankshaft front side to column in the “Main Bearing Selection Table”.
3. Read the symbol at the cross point of selected row and column in the “Main Bearing Selection Table”.
4. Apply the symbol obtained to the “Main B earing Grade Table” to select main bearing.
NOTE:
Service part is available as a set of both upper and lower.
When Cylinder Block and Crankshaft Are Reused
1. Measure the dimensions of the cylinder block ma in bearing housing inner diameter and crankshaft main
journal diameter individually. Refer to EM-102, "
Inspection".
2. Apply the measured dimension to the “Main Bearing Selection Table”.
3. Read the symbol at the cross point of selected row and column in the “Main Bearing Selection Table”.
4. Apply the symbol obtained to the “Main B earing Grade Table” to select main bearing.
Bearing undersize table:
Refer to EM-125, "
Connecting Rod Bearing".
PBIC3263J
(A) : Basic stamp mark
: Engine front
PBIC3760E
(A) : Main journal diameter grade (No. 1 to 5 from left)
(B) : Crankshaft pin journal diameter grade (No. 1 to 4 from left)
PBIC3757E
Revision: August 2015 2016 Versa Note
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SERVICE DATA AND SPECIFICATIONS (SDS)EM-119
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Cylinder headINFOID:0000000012431747
CYLINDER HEAD
Unit: mm (in)
VALVE DIMENSIONS
Unit: mm (in)
326
3.26 (0.1283)
328 3.28 (0.1291)
330 3.30 (0.1299)
332 3.32 (0.1307)
334 3.34 (0.1315)
336 3.36 (0.1323)
338 3.38 (0.1331)
340 3.40 (0.1339)
342 3.42 (0.1346)
344 3.44 (0.1354)
346 3.46 (0.1362)
348 3.48 (0.1370)
350 3.50 (0.1378)
Identification mark (A)
Thickness (B)
ItemsLimit
Head surface distortion 0.1 (0.004)
Valve head diameter “D”Intake
31.6 - 31.9 (1.244 - 1.256)
Exhaust 25.3 - 25.6 (0.996 - 1.007)
Valve length “a” Intake
101.73 (4.01)
Exhaust 102.49 (4.04)
“b” Intake
1.0 (0.0393)
Exhaust 1.0 (0.0393)
“c” Intake
2.1 - 2.8 (0.0826 - 0.1102)
Exhaust 2.3 - 3.0 (0.0905 - 0.1181)
“c ′ ” Intake
3.0 (0.1181)
Exhaust –
“d ” Intake
4.965 - 4.980 (0.1954 - 0.1960)
Exhaust 4.955 - 4.970 (0.1950 - 0.1956)
Valve seat angle “ α” Intake
45°15 ′ - 45 °45 ′
Exhaust
PBIC3878E
Revision: August 2015 2016 Versa Note
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