2001 NISSAN PICK-UP Repair Manual

14. Tighten connecting rod nuts according to the following pro-
cedure:
a. Apply engine oil on bolt threads and seat surface of nuts.
b. Tighten to 29 to 30 Nzm (2.9 to 3.1 kg-m, 21 to 22 ft-lb).
c. Loosen completely to 0 Nzm (0 kg-m, 0 in-lb).
d. Tighten to 19 to 20 Nzm (1.9 to 2.1 kg-m, 14 to 15 ft-lb).
e. Tighten 120É to 125É [target: 120É]. (angular tightening)
+Always use either an angle wrench (SST) or protractor
during angular tightening. Avoid tightening based on
visual checks alone.
+After tightening nuts, check that crankshaft rotates smoothly.
+Check connecting rod side clearance. Refer to EM-3070,
ªCONNECTING ROD SIDE CLEARANCEº.
15. Force fit rear oil seal into rear oil seal retainer.
+Using a drift [105 mm (4.13 in) dia.], force fit so that the
dimension is as specified in the figure.
+Avoid inclined fitting. Force fit perpendicularly.
16. Install rear oil seal retainer.
+Apply a continuous bead of specified liquid gasket (Refer to
EM-3003, ªLiquid Gasket Application Procedureº.) on loca-
tions shown in the figure.
17. Install pilot bushing.
+Force fit with the drift [approx. 19 mm (0.75 in) dia.].
18. Install fuel injection pump bracket.
+Align the bracket with the dowel pins on the block to install.
+The two bolts used for dowel pins have a longer shanks than
the other two.
+Check the protruding distance of the dowel pin for fuel injec-
tion pump.
Standard: 13.0 - 15.0 mm (0.512 - 0.591 in)
19. Install parts to the engine in the reverse order of disassem-
bly.
+Tighten bolts securing brackets of auxiliary components (A/C
compressor, alternator) to the specified torque.
:57-65Nzm (5.8 - 6.7 kg-m, 42 - 48 ft-lb)
JEM231G
JEM232G
JEM233G
JEM234G
SEM898G
CYLINDER BLOCKYD25DDTi
Assembly (Cont'd)
EM-3084

20. Remove engine from engine stand in the reverse order of
assembly.
21. Install flywheel.
+Holding ring gear with ring stopper (SST), tighten securing
bolts with TORX-socket (size: Q8 E20, Commercial Service
Tool).
+Tighten bolts uniformly in a crisscross manner.
REPLACEMENT OF PILOT BUSHING
1. Remove pilot bushing using tool or suitable tool.
2. Install pilot bushing as shown.
SEM500G
SEM275GA
CYLINDER BLOCKYD25DDTi
Assembly (Cont'd)
EM-3085

Inspection and Adjustment
VALVE
Valve clearance adjustment
Unit: mm (in)
Valve clearance (Hot)
Intake 0.31 - 0.39 (0.012 - 0.015)
Exhaust0.33 - 0.41 (0.013 - 0.016)
(Except for Europe)
0.39 - 0.47 (0.015 - 0.019) (For Europe)
CAMSHAFT AND CAMSHAFT BEARING
SEM568AEM120
Unit: mm (in)
Standard Limit
Cam height (A)Intake 42.505 - 42.695 (1.673 - 1.681) Ð
Exhaust 40.905 - 41.095 (1.610 - 1.618) Ð
Wear limit of cam height Ð 0.2 (0.008)
Camshaft journal to bearing clearance 0.045 - 0.090 (0.0018 - 0.0035) 0.12 (0.0047)
Inner diameter of camshaft bearing#1 to #5
journals28.000 - 28.025 (1.1024 - 1.1033) Ð
Outer diameter of camshaft journal (D)#1 to #5
journals27.935 - 27.955 (1.0998 - 1.1006) Ð
Camshaft runout* Less than 0.02 (0.0008) 0.04 (0.0016)
Camshaft end play 0.070 - 0.148 (0.0028 - 0.0058) 0.2 (0.008)
Valve timing (Degree on crankshaft)Except for Europe For Europe
Ð
a 216 224
b 232 224 Ð
cþ1 þ1 Ð
d53 45 Ð
e4 7 Ð
f32 37 Ð
* Total indicator reading
SERVICE DATA AND SPECIFICATIONS (SDS)KA24DE
EM-3086

PISTON, PISTON RING AND PISTON PIN
Piston ring
Unit: mm (in)
Standard Limit
Side
clearanceTop0.040 - 0.080
(0.0016 - 0.0031)0.1 (0.004)
2nd0.030 - 0.070
(0.0012 - 0.0028)0.1 (0.004)
Oil0.065 - 0.135
(0.0026 - 0.0053)0.1 (0.004)
Ring gapTop0.28 - 0.52
(0.0110 - 0.0205)1.0 (0.039)
2nd0.45 - 0.69
(0.0177 - 0.0272)1.0 (0.039)
Oil
(rail ring)0.20 - 0.69
(0.0079 - 0.0272)1.0 (0.039)
SERVICE DATA AND SPECIFICATIONS (SDS)KA24DE
Inspection and Adjustment (Cont'd)
EM-3087

General Specifications
Cylinder arrangementIn-line 4
Displacement cm
3(cu in) 2,488 (151.82)
Bore and stroke mm (in) 89.0 x 100 (3.504 x 3.937)
Valve arrangement DOHC
Firing order 1-3-4-2
Number of piston rings Compression 2
Oil
1
Number of main bearings 5
Compression ratio 18.0
Compression Pressure
Unit: kPa (bar, kg/cm2, psi)/200 rpm
Compression pressureStandard 3,100 (31.00, 31.6, 45.0)
Minimum 2,500 (25.00, 25.5, 363)
Differential limit between cylinders 490 (4.90, 5.0, 71)
Cylinder Head
Unit: mm (in)
Standard Limit
HeadsurfacedistortionLessthan0.03(0.0012)0.1 (0.004)
JEM204G
SERVICE DATA AND SPECIFICATIONS (SDS)YD25DDTi
EM-3088

Valve
VALVE
Unit: mm (in)
SEM188
Valve head diameter ªDºIntake 28.0 - 28.3 (1.102 - 1.114)
Exhaust 26.0 - 26.3 (1.024 - 1.035)
Valve length ªLºIntake 106.72 (4.2016)
Exhaust 106.36 (4.1874)
Valve stem diameter ªdºIntake 5.965 - 5.980 (0.2348 - 0.2354)
Exhaust 5.945 - 5.960 (0.2341 - 0.2346)
Valve seat angle ªaºIntake
45É15¢- 45É45¢
Exhaust
Valve margin ªTºIntake 1.38 (0.0543)
Exhaust 1.48 (0.0583)
Valve margin ªTº limitMore than 1.0 (0.039)
Valve stem end surface grinding limitLess than 0.2 (0.008)
VALVE CLEARANCE
Unit: mm (in)
Cold Hot* (reference data)
Intake 0.24 - 0.32 (0.009 - 0.013) 0.29 - 0.37 (0.011 - 0.015)
Exhaust 0.26 - 0.34 (0.010 - 0.013) 0.33 - 0.41 (0.013 - 0.016)
*: Approximately 80ÉC (176ÉF)
AVAILABLE SHIMS
Thickness mm (in) Identification mark
2.10 (0.0827) 2.10
2.12 (0.0835) 2.12
2.14 (0.0843) 2.14
2.16 (0.0850) 2.16
2.18 (0.0858) 2.18
2.20 (0.0866) 2.20
2.22 (0.0874) 2.22
2.24 (0.0882) 2.24
2.26 (0.0890) 2.26
2.28 (0.0898) 2.28
2.30 (0.0906) 2.30
2.32 (0.0913) 2.32
2.34 (0.0921) 2.34
SERVICE DATA AND SPECIFICATIONS (SDS)YD25DDTi
EM-3089

2.36 (0.0929) 2.36
2.38 (0.0937) 2.38
2.40 (0.0945) 2.40
2.42 (0.0953) 2.42
2.44 (0.0961) 2.44
2.46 (0.0969) 2.46
2.48 (0.0976) 2.48
2.50 (0.0984) 2.50
2.52 (0.0992) 2.52
2.54 (0.1000) 2.54
2.56 (0.1008) 2.56
2.58 (0.1016) 2.58
2.60 (0.1024) 2.60
2.62 (0.1031) 2.62
2.64 (0.1039) 2.64
2.66 (0.1047) 2.66
2.68 (0.1055) 2.68
2.70 (0.1063) 2.70
2.72 (0.1071) 2.72
2.74 (0.1079) 2.74
SEM512G
VALVE SPRING
Free height mm (in) Outer 43.7 (1.720)
Pressure N (kg, lb) at height mm (in) Outer 320 - 360 (32.6 - 36.7, 71.9 - 80.9) at 24.82 (0.9772)
Out-of-square mm (in) Outer Limit 1.9 (0.075)
VALVE LIFTER
Unit: mm (in)
Valve lifter outer diameter 29.960 - 29.975 (1.1795 - 1.1801)
Lifter guide inner diameter 30.000 - 30.021 (1.1181 - 1.1819)
Clearance between lifter and lifter guide 0.025 - 0.061 (0.0010 - 0.0024)
SERVICE DATA AND SPECIFICATIONS (SDS)YD25DDTi
Valve (Cont'd)
EM-3090

VALVE GUIDE
Unit: mm (in)
JEM156G
Standard Service
Valve guide Outer diameter 10.023 - 10.034 (0.3946 - 0.3950) 10.223 - 10.234 (0.4025 - 0.4029)
Valve guide 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)
Standard Limit
Stem to guide clearanceIntake 0.020 - 0.053 (0.0008 - 0.0021) 0.08 (0.0031)
Exhaust 0.040 - 0.073 (0.0016 - 0.0029) 0.1 (0.004)
Valve deflection limit0.15 (0.0059)
Projection length10.4 - 10.6 (0.409 - 0.417)
SERVICE DATA AND SPECIFICATIONS (SDS)YD25DDTi
Valve (Cont'd)
EM-3091