Nissan Cube. Manual — part 404

EM-20

< PERIODIC MAINTENANCE >

CAMSHAFT VALVE CLEARANCE

• 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

EM-114, "Camshaft"

.

5.

Install the selected valve lifter.

6.

Install camshaft. Refer to

EM-53, "Exploded View"

.

7.

Install timing chain and related parts. Refer to

EM-42, "Exploded View"

.

8.

Manually rotate crankshaft pulley a few rotations.

9.

Check that the valve clearances is within the standard. Refer to “INSPECTION”.

10. Install remaining parts in the reverse order of removal.

11. Warm up the engine, and check for unusual noise and vibration.

Valve lifter thickness calculation:

t = t

1

+ (C

1

– C

2

)

t

= Valve lifter thickness to be replaced

t

1

= Removed valve lifter thickness

C

1

= Measured valve clearance

C

2

= Standard valve clearance:

Intake

: 0.30 mm (0.012 in)

Exhaust

: 0.33 mm (0.013 in)

PBIC3196J

COMPRESSION PRESSURE

EM-21

< PERIODIC MAINTENANCE >

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COMPRESSION PRESSURE

Inspection

INFOID:0000000009944924

1.

Warm up engine thoroughly. Then, stop it.

2.

Release fuel pressure. Refer to

EC-478, "Inspection"

.

3.

Remove ignition coil and spark plug from each cylinder. Refer to

EM-40, "Exploded View"

.

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.

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 pis-

ton rings and replace if necessary.

- If the compression pressure remains at low level despite the addition of engine oil, valves may be mal-

functioning. 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 cyl-
inder 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

EC-121, "Description"

.

PBIC3541J

a

: 20 mm (0.79 in)

JPBIA0171ZZ

Compression pressure

: Refer to

EM-113, "General Specification"

.

EM-22

< REMOVAL AND INSTALLATION >

ENGINE COVER

REMOVAL AND INSTALLATION

ENGINE COVER

Exploded View

INFOID:0000000009944925

Removal and Installation

INFOID:0000000009944926

REMOVAL

Remove engine cover.

CAUTION:

Never damage or scratch engine cover when installing or removing.

INSTALLATION

Install in the reverse order of removal.

1.

Engine cover

: N·m (kg-m, in-lb)

JPBIA2354GB

DRIVE BELT AUTO TENSIONER AND IDLER PULLEY

EM-23

< REMOVAL AND INSTALLATION >

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DRIVE BELT AUTO TENSIONER AND IDLER PULLEY

Exploded View

INFOID:0000000009944927

Removal and Installation

INFOID:0000000009944928

Removal

1.

Remove the following parts.
• Engine cover: Refer to

EM-22, "Exploded View"

.

• Cowl top cover and extension cowl top: Refer to

EXT-19, "Exploded View"

.

• Vacuum lines: Refer to

BR-31, "Exploded View"

.

• Air duct: Refer to

EM-24, "Exploded View"

.

• Front fender protector (RH): Refer to

EXT-21, "FENDER PROTECTOR : Exploded View"

.

• Ground cable (between front cover and radiator core support)

2.

Remove drive belt. Refer to

EM-13, "Removal and Installation"

.

• Keep drive belt auto-tensioner pulley arm locked after drive belt are removed.

3.

Support the bottom surface of engine using a transmission jack, and then remove the engine mounting
bracket (RH) and the engine mounting insulator (RH). Refer to

EM-74, "Exploded View"

.

CAUTION:

Never damage or scratch oil pan (lower) when supporting.

4.

Loosen mounting bolt and remove drive belt auto-tensioner.
• Lift the front side of the engine with a jack sustaining engine base to remove mounting bolt.

Installation

Install in the reverse order of removal.

CAUTION:

When installing drive belt auto-tensioner, be careful not to interfere with water pump pulley.

1.

Front cover

2.

Drive belt auto-tensioner

3.

Idler pulley (models without A/C)

4.

Idler pulley bracket (models without A/C)

5.

Shaft (models without A/C)

: N·m (kg-m, ft-lb)

JPBIA2908GB