Nissan Frontier D40. Manual - part 580

EM-52

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CAMSHAFT

CAMSHAFT

Exploded View

INFOID:0000000005274285

Removal and Installation

INFOID:0000000005274286

NOTE:
This section describes removal/installation procedure of camshaft without removing front cover. If front cover
is removed or installed, refer to 

EM-44

.

REMOVAL

1.

Remove the rocker cover. Refer to 

EM-36, "Removal and Installation"

.

2.

Remove the drive belt. Refer to 

EM-14, "Removal and Installation"

.

3.

Disconnect and remove the camshaft position sensor (PHASE).

4.

Disconnect the IVT control solenoid electrical connector.

5.

Disconnect the ground electrical connections from the front cover.

1.

Camshaft bracket (No. 2 to 5)

2.

Seal washer

3.

Camshaft bracket (No. 1)

4.

Front cover

5.

Chain guide

6.

Chain tensioner

7.

Spring

8.

Chain tensioner plunger

9.

O-ring

10. Oil ring

11.

O-ring

12.

Intake valve timing control solenoid 
valve

13. Intake valve timing control cover

14. Camshaft sprocket (INT)

15. Camshaft sprocket (EXH)

16. O-ring

17. Valve lifter

18. Camshaft (INT)

19. Camshaft (EXH)

20. O-ring

21. Camshaft position sensor (PHASE)

A.

Refer to 

EM-52, "Removal and Installation"

WBIA0833E

CAMSHAFT

EM-53

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6.

Remove IVT control cover bolts in the order as shown.

7.

Remove the IVT control cover by cutting the sealant using Tool.

8.

Set the No.1 cylinder at TDC on its compression stroke as fol-
lows: 

a.

Rotate crankshaft pulley clockwise, and align mating marks for
TDC with timing indicator on front cover, as shown.

b.

Make sure that the mating marks on camshaft sprockets are
lined up with the yellow links in the timing chain, as shown.
• If not, rotate crankshaft pulley one more turn to line up the

mating marks to the yellow links, as shown.

9.

Pull the timing chain guide out between the camshaft sprockets through front cover.

10. Line up the mating marks on camshaft sprockets with the yellow links in the timing chain, and paint an

indelible mating mark on the sprocket and timing chain link plate.

CAUTION:

Do not rotate the crankshaft or camshaft while the timing chain is removed. It causes interference
between valve and piston.
NOTE:
Maintaining chain tension is not necessary. Crankshaft sprocket and timing chain do not disconnect struc-
turally while front cover is attached.

11. Push in the tensioner plunger and hold. Insert a stopper pin into

the hole on tensioner body to hold the chain tensioner. Remove
the timing chain tensioner.
• Use a wire with 0.5 mm (0.02 in) diameter for a stopper pin.

Tool number

: KV10111100 (J-37228)

KBIA0085E

KBIA0190E

KBIA0115E

KBIA0048E

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CAMSHAFT

12. Secure the camshaft using a suitable tool as shown. Loosen the

camshaft sprocket bolts and remove the camshaft sprockets.

13. Loosen the camshaft bracket bolts in the order as shown, and

remove the camshaft brackets and camshafts.
• Remove No.1 camshaft bracket by slightly tapping it with a

rubber mallet. 

• Note positions, and set them aside in the order removed.

14. Remove the valve lifters. 

• Note positions, and set them aside in the order removed.

INSPECTION AFTER REMOVAL

Camshaft Runout

1.

Put V-block on a precise flat table, and support No. 2 and 5 jour-
nals 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.

Set a dial indicator vertically to No. 3 journal.

3.

Turn camshaft to one direction with hands, and measure the
camshaft runout on the dial indicator. (Total indicator reading)

4.

If out of the standard, replace camshaft.

Camshaft Cam Height

1.

Measure the camshaft cam height with a micrometer.

2.

If wear is beyond the limit, replace camshaft.

Camshaft Journal Oil Clearance

CAMSHAFT JOURNAL DIAMETER

KBIA0049E

WBIA0028E

Standard: Less than 0.02 mm (0.0008 in).

PBIC2499E

Standard:

Intake

: 45.015 - 45.205 mm (1.7722 - 1.7797 in)

Exhaust

: 43.975 - 44.165 mm (1.7313 - 1.7388 in)

Cam wear limit

: 0.2 mm (0.008 in)

PBIC0039E

CAMSHAFT

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Measure the outer diameter of camshaft journal with a micrometer.

CAMSHAFT BRACKET INNER DIAMETER
• Tighten camshaft bracket bolts with the specified torque. Refer to 

EM-52, "Removal and Installation"

.

• Measure inner diameter “A” of camshaft bracket with a bore gauge.

CAMSHAFT JOURNAL OIL CLEARANCE
• (Oil clearance) = (Camshaft bracket inner diameter) – (Camshaft journal diameter)

• If out of the standard, replace either or both camshaft and cylinder head.

NOTE:
Camshaft brackets cannot be replaced as single parts, because they are machined together with cylinder
head. Replace whole cylinder head assembly.

Camshaft End Play

1.

Install camshaft in cylinder head. Refer to 

EM-52, "Removal and Installation"

.

2.

Install a dial indicator in thrust direction on front end of camshaft.
Measure the camshaft end play on the dial indicator when cam-
shaft is moved forward/backward (in direction to axis).

Standard:

    No. 1

: 27.935 - 27.955 mm (1.0998 - 1.1006 in)

    No. 2, 3, 4, 5

: 23.435 - 23.455 mm (0.9226 - 0.9234 in)

PBIC0040E

Standard:

No. 1

: 28.000 - 28.021 mm (1.1024 - 1.1032 in)

No. 2, 3, 4, 5

: 23.500 - 23.521 mm (0.9252 - 0.9260 in)

PBIC1645E

Standard

: 0.045 - 0.086 mm (0.0018 - 0.0034 in)

Standard

: 0.115 - 0.188 mm (0.0045 - 0.0074 in)

PBIC2446E