Nissan Frontier D40. Manual - part 581

EM-56

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CAMSHAFT

• Measure the following parts if out of the standard.
- Dimension “A” for camshaft No. 1 journal

- Dimension “B” for cylinder head No. 1 journal bearing

• Use the standards above, and then replace camshaft and/or

cylinder head, if necessary.

Camshaft Sprocket Runout

1.

Put V-block on precise flat table, and support No. 2 and 5 journals of camshaft.

CAUTION:

Do not support No. 1 journal (on the side of camshaft sprocket) because it has a different diameter
from the other four locations.

2.

Measure the camshaft sprocket runout with a dial indicator.
(Total indicator reading)

• If it exceeds the limit, replace camshaft sprocket.

Valve Lifter 

Check if surface of valve lifter has any wear or cracks.
• If anything above is found, replace valve lifter. Refer to 

EM-106,

"Standard and Limit"

.

Valve Lifter Clearance

VALVE LIFTER OUTER DIAMETER
• Measure the outer diameter of valve lifter with a micrometer.

VALVE LIFTER HOLE DIAMETER

Standard

: 25.800 - 25.848 mm (1.0157 - 1.0176 in)

Standard

: 25.660 - 25.685 mm (1.0102 - 1.0112 in)

KBIA2426J

Limit

: 0.15 mm (0.0059 in)

PBIC0930E

KBIA0182E

Standard

: 33.965 - 33.980 mm (1.3372 - 1.3378 in)

JEM798G

CAMSHAFT

EM-57

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Measure the diameter of valve lifter hole of cylinder head with an
inside micrometer.

VALVE LIFTER CLEARANCE
• (Valve lifter clearance) = (Valve lifter hole diameter) – (Valve lifter outer diameter)

• If out of the standard, referring to the standard of valve lifter outer diameter and valve lifter hole diameter,

replace either or both valve lifter and cylinder head.

INSTALLATION

1.

Install valve lifters.
• Install them in the original positions.

2.

Install camshafts.
• Distinction between intake and exhaust camshafts is per-

formed with the different shapes of rear end.

• Install camshafts so that camshaft dowel pins on the front side

are positioned as shown.

3.

Install camshaft brackets with the following procedure:

a.

Remove foreign material completely from camshaft bracket backside and from cylinder head installation
face.

Standard

: 34.000 - 34.021 mm (1.3386 - 1.3394 in)

PBIC0043E

Standard

: 0.020 - 0.056 mm (0.0008 - 0.0022 in)

Intake

: Signal plate shape for camshaft posi-
tion sensor (PHASE)

Exhaust

: Cone end shape

KBIA0246E

KBIA0051E

EM-58

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CAMSHAFT

b.

Install camshaft brackets (No. 2 to 5) aligning the identification
marks on upper surface as shown.
NOTE:
Install so that identification mark can be correctly read when
viewed from the exhaust side.

c.

Install camshaft bracket (No. 1) with the following procedure:

i.

Apply liquid gasket to camshaft bracket (No. 1) as shown.
Use Genuine RTV Silicone Sealant or equivalent. Refer to

GI-22, "Recommended Chemical Products and Sealants"

.

CAUTION:

After installation, be sure to wipe off any excessive liquid
gasket leaking from part (A).

ii.

Apply liquid gasket to camshaft bracket (No. 1) contact surface
on the front cover backside.
Use Genuine RTV Silicone Sealant or equivalent. Refer to

GI-22, "Recommended Chemical Products and Sealants"

.

• Apply liquid gasket to the outside of bolt hole on front cover.

iii.

Locate camshaft bracket (No. 1) near installation position, and
install it without disturbing the liquid gasket applied to the sur-
faces.

4.

Tighten bolts of camshaft brackets in the following steps, in numerical order as shown.

SBIA0256E

PBIC2579E

SBIA0258E

PBIC2746E

CAMSHAFT

EM-59

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CAUTION:

After tightening bolts of camshaft brackets, be sure to wipe off
excessive liquid gasket from the parts. 

5.

Install camshaft position sensor (PHASE).

6.

Install camshaft sprockets.
• Install them by aligning the mating marks on each camshaft

sprocket with the paint marks on the timing chain link plates
during removal.

CAUTION:

• Aligned mating marks could slip. Therefore, after match-

ing them, hold the timing chain in place by hand.

• Before and after installing chain tensioner, make sure

again that mating marks have not slipped.

NOTE:
Before installation of chain tensioner, it is possible to re-match
the marks on timing chain with the ones on each sprocket.   

7.

Install chain tensioner.

CAUTION:

After installation, pull the stopper pin off completely, and make sure that chain tensioner plunger
is released.

8.

Install chain guide.

9.

Install O-rings to the camshaft sprocket (INT) insertion points on backside of intake valve timing control
cover.

10. Install O-ring to front cover. 

11. Apply liquid gasket using Tool to intake valve timing control

cover as shown.

Use Genuine RTV Silicone Sealant or equivalent. Refer to

GI-22, "Recommended Chemical Products and Sealants"

.

12. Tighten bolts in numerical order as shown.

13. Install intake valve timing control solenoid valve to intake valve timing control cover if removed.

14. Connect ground cables, and install harness clip.

15. Check and adjust valve clearance. Refer to

EM-106, "Standard and Limit"

.

Step 1 (bolts 9 - 11)

: 2.0 N·m (0.2 kg-m, 17 in-lb)

Step 2 (bolts 1 - 8)

: 2.0 N·m (0.2 kg-m, 17 in-lb)

Step 3 (bolts 1 - 11)

: 5.9 N·m (0.6 kg-m, 52 in-lb)

Step 4 (bolts 1 - 11)

: 10.4 N·m (1.1 kg-m, 92 in-lb)

Tool number

: WS39930000 (

—

)

SBIA0255E

PBIC2351E

SBIA0260E

KBIA0085E