Nissan Titan. Manual - part 304

EM-20

< PERIODIC MAINTENANCE >

CAMSHAFT VALVE CLEARANCE

6. Measure valve clearances at the locations marked “

×” as shown

in the table below (locations indicated with black arrow).

NOTE:

Firing order 1-8-7-3-6-5-4-2

• No. 1 cylinder compression TDC

• Measure valve clearance using suitable tool. Refer to 

EM-118,

"Standard and Limit"

.

CAUTION:

If the inspection was carried out with a cold engine, make

sure the values with a fully warmed up engine are still

within specifications.

7. Turn the crankshaft pulley clockwise 270

° from the position of No. 1 cylinder compression TDC to obtain

No. 3 cylinder compression TDC.

: Engine front 

: Measurable at No.1 cylinder compression top dead center (black)

: Measurable at No. 3 cylinder compression top dead center (white)

(A)

: (RH)

(B)

: (LH)

(C)

: Exhaust

(D)

: Intake

Measuring position (RH bank)

No. 2 cyl 

(E)

No. 4 cyl 

(F)

No. 6 cyl 

(G)

No. 8 cyl 

(H)

No. 1 cylinder at TDC

 EXH

×

INT

×

×

Measuring position (LH bank)

No. 1 cyl 

(J)

No. 3 cyl 

(K)

No. 5 cyl 

(L)

No. 7 cyl 

(M)

No. 1 cylinder at TDC

INT

×

×

EXH

×

×

WBIA0713E

KBIA0185E

CAMSHAFT VALVE CLEARANCE

EM-21

< PERIODIC MAINTENANCE >

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G

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8. Measure valve clearances at the locations marked “

×” as shown

in the table below (locations indicated with white arrow).

NOTE:

Firing order 1-8-7-3-6-5-4-2

• No. 3 cylinder compression TDC

• Measure valve clearance using suitable tool. Refer to 

EM-118,

"Standard and Limit"

.

CAUTION:

If the inspection was carried out with a cold engine, make

sure the values with a fully warmed up engine are still

within specifications.

: Engine front 

: Measurable at No.1 cylinder compression top dead center (black)

: Measurable at No. 3 cylinder compression top dead center (white)

(A)

: (RH)

(B)

: (LH)

(C)

: Exhaust

(D)

: Intake

Measuring position (RH bank)

No. 2 cyl 

(E)

No. 4 cyl 

(F)

No. 6 cyl 

(G)

No. 8 cyl 

(H)

No. 3 cylinder at TDC

 EXH

×

INT

×

Measuring position (LH bank)

No. 1 cyl 

(J)

No. 3 cyl 

(K)

No. 5 cyl 

(L)

No. 7 cyl 

(M)

No. 3 cylinder at TDC

INT

×

×

EXH

×

×

WBIA0713E

KBIA0185E

EM-22

< PERIODIC MAINTENANCE >

CAMSHAFT VALVE CLEARANCE

9. Turn the crankshaft pulley clockwise 90

° from the position of No.

3 cylinder compression TDC (clockwise by 360

° from the posi-

tion of No. 1 cylinder compression TDC) to measure the intake

and exhaust valve clearances of No. 6 cylinder (G) and the

exhaust valve clearance of No. 2 cylinder (E).

10. If out of specifications, adjust as necessary. 

ADJUSTMENT

NOTE:

• Perform adjustment depending on the selected head thickness of the valve lifter.

• The specified valve lifter thickness is the dimension at normal temperatures. Ignore dimensional differences

caused by temperature. Use the specifications for hot engine condition to adjust.

1. Remove the camshaft. Refer to 

EM-62, "Removal and Installation"

.

2. Remove the valve lifters at the locations that are out of specification.
3. Measure the center thickness of the removed valve lifters using

suitable tool.

4. Use the equation below to calculate the valve lifter thickness for

replacement.

• Valve lifter thickness calculation:

Thickness of replacement valve lifter = t1+ (C1 - C2)

t1 = Thickness of removed valve lifter

C1 = Measured valve clearance

C2= Standard valve clearance:

• Thickness of a new valve lifter can be identified by stamp

marks on the reverse side (inside the cylinder).

Stamp mark N788 indicates 7.88 mm (0.3102 in) in thickness.

• Available thickness of valve lifter: 25 sizes with range 7.88 to

8.36 mm (0.3102 to 0.3291 in) in steps of 0.02 mm (0.0008 in)

(when manufactured at factory). Refer to 

EM-118, "Standard

and Limit"

.

5. Install the selected valve lifter.

: Engine front

(A)

: (RH)

(B)

: (LH)

(C)

: Exhaust

(D)

: Intake

(E)

: No. 2 cylinder

(F)

: No. 4 cylinder

(G)

: No. 6 cylinder

(H)

: No. 8 cylinder

(J)

: No. 1 cylinder

(K)

: No. 3 cylinder

(L)

: No. 5 cylinder

(M)

: No. 7 cylinder

WBIA0713E

KBIA0057E

KBIA0119E

CAMSHAFT VALVE CLEARANCE

EM-23

< PERIODIC MAINTENANCE >

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6. Install the camshaft.
7. Manually turn the crankshaft pulley a few turns.
8. Make sure the valve clearances for a cold engine are within specifications. Refer to 

EM-118, "Standard

and Limit"

.

9. After completing the repair, check the valve clearances again with the specifications for a warmed engine.

Make sure the values are within specifications. Refer to 

EM-118, "Standard and Limit"

.