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Nissan Frontier D40. Manual - part 615

EM-192

< ON-VEHICLE REPAIR >

[VQ40DE]

CAMSHAFT

• Install camshaft with dowel pin attached to its front end face on

the exhaust side.

• Follow your identification marks made during removal, or fol-

low the identification marks that are present on new camshafts
for proper placement and direction.

• Install camshaft so that dowel pin hole and dowel pin on front

end face are positioned as shown. (No. 1 cylinder TDC on its
compression stroke)
NOTE:
• Large and small pin holes are located on front end face of

camshaft (INT), at intervals of 180

. Face small dia. side pin

hole upward (in cylinder head upper face direction).

• Though camshaft does not stop at the portion as shown, for

the placement of cam nose, it is generally accepted cam-
shaft is placed for the same direction as shown.

KBIA1071E

Bank

INT/EXH

Dowel pin

Paint marks

Identification

mark

INT

Green

EXH

Yes

White

INT

Green

EXH

Yes

White

KBIA1009E

PBIC2478E

CAMSHAFT

EM-193

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[VQ40DE]

Install camshaft brackets.
• Remove foreign material completely from camshaft bracket

backside and from cylinder head installation face.

• Install camshaft bracket in original position and direction as

shown.

• Install camshaft brackets (No. 2 to 4) aligning the stamp marks

as shown.
NOTE:
There are no identification marks indicating left and right for
camshaft bracket (No. 1).

• Apply liquid gasket to mating surface of camshaft bracket (No.

1) as shown on right and left banks.
Use Genuine RTV Silicone Sealant or equivalent. Refer to

PBIC2051E

PBIC2052E

PBIC2660E

EM-194

< ON-VEHICLE REPAIR >

[VQ40DE]

CAMSHAFT

Tighten camshaft bracket bolts in the following steps, in numeri-
cal order as shown.

Measure the difference in levels between front end faces of
camshaft bracket (No. 1) and cylinder head.

• Measure two positions (both intake and exhaust side) for a

single bank.

• If the measured value is out of the standard, re-install cam-

shaft bracket (No. 1).

Check and adjust the valve clearance. Refer to

EM-132, "Valve Clearance"

Installation of the remaining components is in the reverse order of removal.

INSPECTION AFTER INSTALLATION

Inspection of Camshaft Sprocket (INT) Oil Groove

WARNING:

• Check when engine is cold so as to prevent burns from any splashing engine oil.

CAUTION:

• Perform this inspection only when DTC P0011 or P0021 are detected in self-diagnostic results of

CONSULT-III and it is directed according to inspection procedure of EC section. Refer to

EC-552,

"DTC Confirmation Procedure"

Check the engine oil level. Refer to

LU-21, "Inspection"

Perform the following procedure so as to prevent the engine from being unintentionally started while
checking.

Release fuel pressure. Refer to

EC-954, "Fuel Pressure Check"

Disconnect ignition coil and injector harness connectors.

Remove intake valve timing control solenoid valve. Refer to

EM-164, "Removal and Installation"

Camshaft bracket bolts

Step 1 (bolts 7 - 10)

: 1.96 N·m (0.2 kg-m, 17 in-lb)

Step 2 (bolts 1 - 6)

: 1.96 N·m (0.2 kg-m, 17 in-lb)

Step 3

: 5.88 N·m (0.6 kg-m, 52 in-lb)

Step 4

: 10.4 N·m (1.1 kg-m, 92 in-lb)

PBIC2050E

Standard

: –0.14 to 0.14 mm (–0.0055 to 0.0055 in)

EMQ0044D

CAMSHAFT

EM-195

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[VQ40DE]

Crank the engine, and then make sure that engine oil comes out
from camshaft bracket (No. 1) oil hole. End cranking after check-
ing.

WARNING:

• Be careful not to touch rotating parts (drive belts, idler

pulley, and crankshaft pulley, etc.).

CAUTION:

• Engine oil may squirt from intake valve timing control

solenoid valve installation hole during cranking. Use a
shop cloth to prevent the engine oil from spilling on com-
ponents and the vehicle.

• Do not allow engine oil to get on rubber components such

as drive belt or engine mount insulators. Immediately wipe off any splashed engine oil.

• Clean oil groove between oil strainer and intake valve timing control solenoid valve if engine oil does not

come out from camshaft bracket (No. 1) oil hole. Refer to

LU-20, "Lubrication Circuit"

LU-20, "System

Chart"

Remove components between intake valve timing control solenoid valve and camshaft sprocket (INT),
and then check each oil groove for clogging.
• Clean oil groove if necessary. Refer to

LU-20, "Lubrication Circuit"

LU-20, "System Chart"

After inspection, installation of the remaining components is in the reverse order of removal.

Inspection for Leaks

The following are procedures for checking fluid leaks, lubricant leaks and exhaust gases leaks.
• 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-16, "For North America: 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.

NOTE:
If hydraulic pressure inside timing chain tensioner drops after removal/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 is no leakage 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.

Summary of the inspection items:

* Transmission fluid, power steering fluid, brake fluid, etc.

PBIC2869E

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

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