Nissan Pathfinder. Manual - part 574

SERVICE DATA AND SPECIFICATIONS (SDS)

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*

1

: Cam wear limit

*

2

: Total indicator reading

VALVE LIFTER

Unit: mm (in)

VALVE CLEARANCE

Unit: mm (in)

*: Approximately 80

°C (176°F)

AVAILABLE VALVE LIFTER

Unit: mm (in)

Difference in level between front end 
faces of No. 1 camshaft bracket and cyl-
inder head

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

—

SEM671

Items

Standard

Valve lifter outer diameter

33.977 - 33.987 (1.3377 - 1.3381)

Valve lifter bore diameter

34.000 - 34.016 (1.3386 - 1.3392)

Valve lifter clearance

0.013 - 0.039 (0.0005 - 0.0015)

Items

Cold

Hot* (reference data)

Intake

0.26 - 0.34 (0.010 - 0.013)

0.304 - 0.416 (0.012 - 0.016)

Exhaust

0.29 - 0.37 (0.011 - 0.015)

0.308 - 0.432 (0.012 - 0.017)

Identification (stamped) mark*

Thickness

788U

7.88 (0.3102)

790U

7.90 (0.3110)

792U

7.92 (0.3118)

794U

7.94 (0.3126)

796U

7.96 (0.3134)

798U

7.98 (0.3142)

800U

8.00 (0.3150)

802U

8.02 (0.3157)

804U

8.04 (0.3165)

806U

8.06 (0.3173)

808U

8.08 (0.3181)

810U

8.10 (0.3189)

812U

8.12 (0.3197)

814U

8.14 (0.3205)

816U

8.16 (0.3213)

818U

8.18 (0.3220)

EM-136

< SERVICE DATA AND SPECIFICATIONS (SDS) 

SERVICE DATA AND SPECIFICATIONS (SDS)

*: Always check with the Parts Department for the latest parts information.

Cylinder Head

INFOID:0000000009177954

CYLINDER HEAD

Unit: mm (in)

VALVE DIMENSIONS

820U

8.20 (0.3228)

822U

8.22 (0.3236)

824U

8.24 (0.3244)

826U

8.26 (0.3252)

828U

8.28 (0.3260)

830U

8.30 (0.3268)

832U

8.32 (0.3276)

834U

8.34 (0.3283)

836U

8.36 (0.3291)

838U

8.38 (0.3299)

840U

8.40 (0.3307)

Identification (stamped) mark*

Thickness

SEM758G

Items

Standard

Limit

Head surface distortion

Less than 0.03 (0.0012)

0.1 (0.004)

Normal cylinder head height (H)

126.3 - 126.5 (4.97 - 4.98)

—

Spark plug tube installation height

38.2 +0.9/- 0.5 (1.5 +0.035 / -0.020)

—

PBIC0924E

SERVICE DATA AND SPECIFICATIONS (SDS)

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Unit: mm (in)

Valve Oil Seal

Unit: mm (in)

VALVE GUIDE

Valve head diameter (D)

Intake

36.6 - 36.9 (1.441 - 1.453)

Exhaust

30.2 - 30.5 (1.189 - 1.201)

Valve length (L)

Intake

97.13 (3.8240)

Exhaust

94.67 (3.7272)

Valve stem diameter (d)

Intake

5.965 - 5.980 (0.2348 - 0.2354)

Exhaust

5.955 - 5.970 (0.2344 - 0.2350)

Valve seat angle 

α)

Intake

45

°15′ - 45°45′

Exhaust

Valve margin (T)

Intake

1.15 - 1.45 (0.0453 - 0.0571)

Exhaust

1.45 - 1.75 (0.0571 - 0.0689)

Valve margin (T) limit

More than 0.5 (0.020)

Valve stem end surface grinding limit

Less than 0.2 (0.008)

SEM188

Items

Standard

Height (H) (without valve spring installed)

14.300 - 14.900 (0.5630 - 0.5870)

WBIA0490E

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< SERVICE DATA AND SPECIFICATIONS (SDS) 

SERVICE DATA AND SPECIFICATIONS (SDS)

Unit: mm (in)

VALVE SEAT

Items

Standard

Oversize (Service) [0.2 (0.008)]

Valve guide

Outer diameter

10.023 - 10.034 (0.3946 - 0.3950) 10.223 - 10.234 (0.4025 - 0.4029)

Inner diameter (Finished size)

6.000 - 6.018 (0.2362 - 0.2369)

Cylinder head valve guide hole diameter

9.975 - 9.996 (0.3927 - 0.3935)

10.175 - 10.196 (0.4006 - 0.4014)

Interference fit of valve guide

0.027 - 0.059 (0.0011 - 0.0023)

Items

Standard

Limit

Valve guide clearance

Intake

0.020 - 0.053 (0.0008 - 0.0021)

0.08 (0.0031)

Exhaust

0.040 - 0.073 (0.0016 - 0.0029)

0.01 (0.004)

Valve deflection

Intake

—

0.24 (0.0094)

Exhaust

—

0.28 (0.0110)

Projection length (L)

12.6 - 12.8 (0.496 - 0.504)

SEM950E