Engine Mechanical: Adjustments Nissan Juke I

ADJUSTMENT

1. Perform adjustment depending on selected head thickness of valve lifter.

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1. Remove camshaft. Refer to " «EXPLODED VIEW»(ref-516394-S32610026052012120600000) ".
2. Remove valve lifters at the locations that are out of the standard.
3. Measure the center thickness of the removed valve lifters with a micrometer (A).
4. Use the equation below to calculate valve lifter thickness for replacement. Valve lifter thickness calculation: t = t1 + (C1 - C2) t = Valve lifter thickness to be replaced t1 = Removed valve lifter thickness C1 = Measured valve clearance C2 = Standard valve clearance: Intake: 0.28 mm (0.011 in) Exhaust: 0.29 mm (0.011 in) Thickness of new valve lifter (B) can be identified by stamp mark (A) on the reverse side (inside the cylinder). Stamp mark "302" indicates 3.02 mm (0.1189 in) in thickness. NOTE: Available thickness of valve lifter: 26 sizes range 3.00 to 3.50 mm (0.1181 to 0.1378 in) in steps of 0.02 mm (0.0008 in) (when manufactured at factory). Refer to " «CAMSHAFT»(ref-516394-S39024377212012120600000) ".
5. Install the selected valve lifter.
6. Install camshaft. Refer to " «EXPLODED VIEW»(ref-516394-S32610026052012120600000) ".
7. Install timing chain and related parts. Refer to " «EXPLODED VIEW»(ref-516394-S04113068152012120600000) ".
8. Manually rotate crankshaft pulley a few rotations.
9. Check that the valve clearances is within the standard. Refer to " «INSPECTION»(ref-516394-S29676768992012120600000) ".
10. Install remaining parts in the reverse order of removal.
11. Warm up the engine, and check for unusual noise and vibration.

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1. Warm up engine thoroughly. Then, stop it.
2. Release fuel pressure. Refer to " «WORK PROCEDURE»(ref-516395-S28376118092012120600000) ".
3. Remove ignition coil and spark plug from each cylinder. Refer to " «EXPLODED VIEW»(ref-516394-S05809942372012120600000) ".
4. Connect engine tachometer (not required in use of CONSULT).
5. Install compression gauge (B) with an adapter (A) (commercial service tool) onto spark plug hole. Use the adapter whose picking up end inserted to spark plug hole is smaller than 20 mm (0.79 in) in diameter. Otherwise, it may be caught by cylinder head during removal.
6. With accelerator pedal fully depressed, turn ignition switch to "START" for cranking. When the gauge pointer stabilizes, read the compression pressure and the engine rpm. Perform these steps to check each cylinder. Compression pressure: Refer to " «GENERAL SPECIFICATION»(ref-516394-S00624052032012120600000) ". CAUTION: Always use a fully charged battery to obtain the specified engine speed. If the engine speed is out of the specified range, check battery liquid for proper gravity. Check the engine speed again with normal battery gravity. If compression pressure is below minimum value, check valve clearances, and parts associated with combustion chamber (valve, valve seat, piston, piston ring, cylinder bore, cylinder head, and cylinder head gasket). After the checking, measure compression pressure again. If some cylinder has low compression pressure, pour small amount of engine oil into the spark plug hole of the cylinder to recheck it for compression. If the added engine oil improves the compression, piston rings may be worn out or damaged. Check piston rings and replace if necessary. If the compression pressure remains at low level despite the addition of engine oil, valves may be malfunctioning. Check valves for damage. Replace valve or valve seat accordingly. If two adjacent cylinders have respectively low compression pressure and their compression remains low even after the addition of engine oil, cylinder head gaskets are leaking. In such a case, replace cylinder head gaskets.
7. After inspection is completed, install removed parts.
8. Start the engine, and check that the engine runs smoothly.
9. Perform trouble diagnosis. If DTC appears, erase it. Refer to " «DESCRIPTION»(ref-516395-S16900844632012120600000) ".

Scheme 12

1. Locate the area where noise occurs.
2. Confirm the type of noise.
3. Specify the operating condition of engine.
4. Check specified noise source.

If necessary, repair or replace these parts.

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1. Turn the steering wheel to the right.
2. Remove the front fender protector (RH) front side bolts and clips. And keep a service area. Refer to " «EXPLODED VIEW»(ref-516396-S16406822502012120600000) ".
3. Hold the hexagonal part (A) of drive belt auto-tensioner (1) with a wrench securely. Then move the wrench handle in the direction of arrow (loosening direction of tensioner). CAUTION: Avoid placing hand in a location where pinching may occur if the holding tool accidentally comes off.
4. Insert a rod approximately 6 mm (0.24 in) in diameter such as short-length screwdriver into the hole (B) of the retaining boss to fix drive belt auto-tensioner. Keep drive belt auto-tensioner pulley arm locked after drive belt is removed.
5. Remove drive belt.

Refer to: " DRIVE BELT ".

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1. Remove air duct inlet (upper) (1).
2. Unhook the tabs (A) of both ends of the air cleaner cover.
3. Remove the air cleaner filter (1) and air cleaner body (2) from the air cleaner case.
4. Remove the air cleaner filter from the air cleaner body.