NISSAN LATIO 2009 Service Repair Manual

Cylinder Head " .
• If dimensions are out of the standard, r eplace valve and check valve seat contact.
Valve Guide Clearance
Valve Stem Diameter
• Measure the diameter of valve stem with micrometer (A).
Valve Guide Inner Diameter
• Measure the inner diameter of valve guide with bore gauge.
Valve Guide Clearance
• (Valve guide clearance) = (Valve guide inner diameter) – (Valve
stem diameter)
• If the calculated value exceeds the limit, replace valve and/or valve guide.
Valve Seat Contact
• After confirming that the dimensi ons of valve guides and valves are
within the specifications, perform this procedure.
• Apply prussian blue (or white lead) onto contacting surface 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 even after the re-check, replace
valve seat. Refer to EM-82, " Disassembly and Assembly " .
Valve Spring Squareness Cylinder Head " .
Standard : Refer to EM-119, " Cylinder Head " .
Standard and Limit : Refer to EM-119, " Cylinder Head " .

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• Set a try square (A) along the side of valve spring and rotate
spring. Measure the maximum clearance between the top of spring
and try square.
• If it exceeds the limit, replace valve spring.
Valve Spring Dimensions and Valve Spring Pressure Load • Check the valve spring pressure at specified spring height.
• If the installation load or load with valve open is out of the stan- dard, replace valve spring.
ASSEMBLY 1. Install the valve guide, if necessary. CAUTION:
Replace with oversize [0.2 mm (0.008 in)] valve guide.
a. Using suitable tool (A), ream cylinder head valve guide hole.
b. Heat cylinder head to 110 to 130 °C (230 to 266 °F) by soaking in
heated oil (A). B : Contact
Limit : Refer to EM-119, " Cylinder Head " .
Cylinder Head " .
Standard : Refer to EM-119, " Cylinder Head " .
Cylinder Head " .
PBIC3214J

EM-86< ON-VEHICLE REPAIR >
[HR16DE]
CYLINDER HEAD
c. Using suitable tool, press valve guide (1) from camshaft side to the dimensions as shown.
WARNING:
Cylinder head (2) contains h eat. Wear protective equipment
to avoid getting burned.
d. Using suitable tool (A), apply reamer finish to valve guide.
2. Install the valve seat, if necessary. CAUTION:
Replace with oversize [0.5 mm (0.020 in)] valve seat.
a. Ream cylinder head recess diameter (a) for service valve seat.
• Be sure to ream in circles concentric to valve guide center.This will enable valve to fit correctly.
b. Heat cylinder head to 110 to 130 °C (230 to 266 °F) by soaking in
heated oil (A).
c. Provide valve seats cooled well with dry ice. Force fit valve seat into cylinder head. WARNING:
• Cylinder head contains heat. Wear prot ective equipment to avoid getting burned.
• Avoid directly touching cold valve seats. Projection “H”: Refer to
EM-119, " Cylinder Head " .
PBIC3217J
Standard: Refer to
EM-119, " Cylinder Head " .
PBIC3215J
For service parts: Oversize [0.5 mm (0.020 in)]
Refer to EM-119, " Cylinder Head " .
JPBIA0188ZZ
PBIC3214J

CYLINDER HEAD
EM-87
< ON-VEHICLE REPAIR >
[HR16DE] C
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d. Using suitable tool or valve seat grinder, finish seat to the speci-
fied dimensions. Refer to EM-119, " Cylinder Head " .
CAUTION:
When using the valve seat cutt er, firmly grip cutter handle
with both hands. Then, press on the contacting surface all
around the circumference to cu t in a single drive. Improper
pressure on with cutter or cu tting many different times may
result in stage valve seat.
e. Using compound, grind to adjust valve fitting.
f. Check again for normal contact. Refer to EM-82, " Disassembly and Assembly " .
3. Install valve oil seal. • Install with Tool (A) to match dimension as shown.
4. Install valve spring seat.
5. Install valve. • Install larger diameter to intake side.
6. Install valve spring. NOTE:
It can be installed in either direction.
7. Install valve spring retainer.
8. Install valve collet. • Compress valve spring with Tool (A). Install valve collet with amagnet hand (B).
CAUTION:
Be careful not to damage valve lifter holes.
• Tap valve stem edge lightly with a plastic hammer after instal-
lation to check its installed condition.
9. Install valve lifter.
10. Install spark plug with a suitable tool. SEM934C
Height “H” : 13.2 - 13.8 mm (0.520 - 0.543 in)
Tool number : KV10115600 (J-38958) PBIC3211J
Tool number : KV10116200 (J-26336-B)
: KV10115900 (J-26336-20)
: KV10109220 ( — ) PBIC3727E

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• If items or work required are not covered by the
engine section, follow the procedures in the applica-
ble sections.
• Always use the support poin t specified for lifting.
• Use either 2-pole lift type or separate type lift as best you can. If board-on type is used for unavoid-
able reasons, support at the rear axle jacking point with a transmission jack or similar tool before
starting work, in prepar ation for the backward shif t of center of gravity.
• For supporting points fo r lifting and jacking point at rear axle, refer to GI-38, " Garage Jack and
Safety Stand and 2-Pole Lift " .
REMOVAL
Outline Remove the engine and the transaxle assembly from t he vehicle downward. Separate the engine and the tran-
saxle.
Preparation 1. Remove the hood assembly. Refer to BL-14, " Removal and Installation " .
2. Remove the cowl top cover and cowl top extension assembly. Refer to EI-22, " Removal and Installation " .
3. Release fuel pressure. Refer to EC-498, " Inspection " .
4. Drain engine coolant from radiator. Refer to CO-11, " Changing Engine Coolant " .
CAUTION:
• Perform this step when the engine is cold.
• Never spill engine coolant on drive belt.
5. Drain the transmission fluid. Refer to MT-10, " Draining " (M/T),
AT-17, " Changing A/T Fluid " (A/T).
6. Remove the following parts. • Engine undercover
• Front road wheels and tires: Refer to WT-7, " Rotation " .
• Front fender protector (RH and LH): Refer to EI-24, " Removal and Installation " .
• Battery and battery tray: Refer to SC-7, " Removal and Installation " .
• Drive belt: Refer to EM-15, " Removal and Installation " .
• Air duct and air cleaner case assembly: Refer to EM-26, " Exploded View " .
• Radiator hose (upper and lower): Refer to CO-16, " Component " .
• Disconnect cooling fan controller wiring harness.
• Remove coolant reservoir tank.
• Remove fan shroud and cooling fan assembly. Refer to CO-18, " Component (Models with A/C) " or
CO- 18, " Component (Models without A/C) " .
Engine Room LH 1. Disconnect all connections of engine harness around the engine mounting insulator (LH), and then tem- porarily secure the engine harness into the engine side.
CAUTION:
Protect connectors using a resin bag against foreign materials.
2. Remove ground cable at transaxle side.
3. Disconnect fuel feed hose at engine side. Refer to EM-34, " Exploded View " .
4. Disconnect EVAP purge hose and brake booster vacuum hose.
5. Disconnect heater hoses, and install plugs them to prevent engine coolant from draining. Refer to CO-16," Component " .
6. Disconnect control linkage from transaxle. Refer to AT-212, " Control Device Removal and Installation " (A/
T), MT-13, " Exploded View " (M/T).
7. Disconnect the clutch tube at tr ansmission side (if equipped). Refer to CL-14, " Removal and Installation " .
Engine Room RH 1. Remove ground cable between front cover and vehicle.
2. Remove generator and generator bracket; Refer to SC-25, " Removal and Installation " .
3. Remove A/C compressor with piping connected from t he engine. Temporarily secure it on the vehicle side
with a rope to avoid putting load on it. (if equipped) Refer to MTC-78, " Removal and Installation of Com-
pressor - HR16DE " .
Vehicle Underbody

" Removal and Installation " (ABS).
2. Remove brake caliper assembly with piping connected fr om steering knuckle. Temporarily secure it on the
vehicle side with a rope to avoid load on it. Refer to BR-25, " Component " .
3. Remove drive shafts (LH and RH) from steering knuckle. Refer to FAX-9, " Removal and Installation (Left
Side) " and
FAX-10, " Removal and Installation (Right Side) " .
4. Remove exhaust front tube. Refer to EX-5, " Component " .
5. Remove rear torque rod. NOTE:
A/T models shown.
6. Remove A/T cooler hoses from transmission (if equipped).
7. Preparation for the separation work of transaxle is as follows: • Remove transaxle joint bolts which pierce at oil pan (upper) lower rear side. Refer to EM-42, " Compo-
nent " .
Removal
1. Install engine slinger to cylinder head front left side (A) and rear right side (B) and support the engine with a hoist.
2. Lift with a hoist and secure the engine in appropriate position.
3. Use a suitable tool (A) to securely support bottom of the engine and the transaxle assembly and simultaneously adjust hoist ten-
sion.
CAUTION:
Put a piece of wood or someth ing similar as the supporting
surface, secure a completely stable condition. PBIC3223J

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4. Remove engine mounting insulator (RH) (1), engine mounting
bracket (RH) (2) and engine mounting stay (3).
5. Remove engine mounting insulator (LH) (4) through bolt secur- ing nut (A).
6. Carefully lower jack, or raise lift to remove the engine and the transaxle assembly. CAUTION:
• Make sure that no part interferes with the vehicle side.
• Before and during this lifting, alw ays check if any harnesses are left connected.
• During the removal, always be careful to prevent the vehicle from falling off the lift due to
changes in the center of gravity.
• If necessary, support the vehicle by setting jack or suitable tool at the rear.
Separation 1. Remove starter motor. Refer to SC-19, " Removal and Installation HR16DE " .
2. Lift with a hoist and separate the engine from the transaxle assembly. Refer to EM-88, " Exploded View " .
INSTALLATION Installation is in the reverse order of removal.
• Do not allow engine oil to get on engine mounting insulator. Be careful not to damage engine mounting insu- lator.
• Make sure that each mounting insulator is seated properly, and tighten nuts and bolts.
• Tighten engine mounting insulator (RH) bolts in the numerical
order shown.
Inspection INFOID:0000000004784309
INSPECTION AFTER INSTALLATION
Inspection for Leaks • 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-14, " Fluids and Lubricants " .
• Use procedure below to check for fuel leakage.
- Turn ignition switch “ON” (with engine stopped). With fuel pressure applied to fuel piping, check for fuel leak-
age at connection points.
- Start engine. With engine speed increased, check again for fuel leakage at connection points.
• Run engine to check for unusual noise and vibration.
• Warm up engine thoroughly to make sure there is no leak age of fuel, exhaust gases, or any oil/fluids includ-
ing 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.

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DISASSEMBLY AND ASSEMBLY
ENGINE STAND SETTING
Setting INFOID:0000000004784310
NOTE:
Explained here is how to disassemble with engine stand supporting transmission surface. When using differ-
ent type of engine stand, note with difference in steps and etc.
1. Remove the engine and the transaxle assembly from the vehicle, and separate the transaxle from the
engine. Refer to EM-88, " Exploded View " .
2. Remove clutch cover and clutch disc (if equipped). Refer to CL-15, " Removal and Installation " .
3. Remove flywheel or driveplate. • Secure flywheel or driveplate with Tool, and remove bolts.
CAUTION:
• Never disassemble flywheel.
• Never place flywheel or driveplate with signal plate facing down.
• When handling signal plate, take car e not to damage or scratch it.
• Handle signal plate in a manner that prevents it from becoming magnetized.
4. Lift the engine with a hoist to install it onto widely use engine stand. CAUTION:
• Use the engine stand that has a load capacity [approximately 135 kg (298 lb) or more] large
enough for supporting the engine weight.
• If the load capacity of stand is not adequate, remove the following parts beforehand to reduce the poten-
tial risk of overturning stand.
- Intake manifold: Refer to EM-28, " Exploded View " .
- Exhaust manifold: Refer to EM-31, " Exploded View " .
- Rocker cover: Refer to EM-46, " Exploded View " .
NOTE:
The figure shows an example of widely use engine stand that
can support mating surface of transaxle with flywheel or drive-
plate removed.
CAUTION:
Before removing the hanging chains, make sure the engine
stand is stable and there is no risk of overturning.
5. Drain engine oil. Refer to LU-8, " Draining " .
6. Drain engine coolant by removing water drain plug (1) from RH side of the engine. Tool number : KV11105210 (J-44716)