Nissan Titan A60. Manual — part 478
ENGINE UNIT
EM-97
< UNIT DISASSEMBLY AND ASSEMBLY >
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• Move the crankshaft fully forward and backward and measure the
clearance between the thrust bearings and crankshaft arm using
suitable tool.
• If measured value exceeds the repair limit, replace the thrust bear-
ings, and measure again. If it still exceeds the repair limit, replace
crankshaft also.
CONNECTING ROD SIDE CLEARANCE
• Measure side clearance between the connecting rod and crank-
shaft arm using suitable tool.
• If measured value exceeds the repair limit, replace the connecting
rod bearings, and measure again. If it still exceeds the repair limit,
replace the crankshaft also.
PISTON AND PISTON PIN CLEARANCE
Piston Pin Hole Diameter
• Measure diameter of piston pin hole using suitable tool.
Piston Pin Diameter
• Measure diameter of piston pin using suitable tool.
Piston and Piston Pin Clearance
Standard
: 0.10 - 0.26 mm (0.0039 - 0.0102 in)
Limit
: 0.30 mm (0.0118 in)
PBIC0114E
Standard
: 0.20 - 0.40 mm (0.0079 - 0.0157 in)
Limit
: 0.40 mm (0.0157 in)
PBIC0115E
Standard
: 21.993 - 21.999 mm (0.8659 - 0.8661 in)
PBIC0116E
Standard
: 21.989 - 21.995 mm (0.8657 - 0.8659 in)
PBIC0117E
EM-98
< UNIT DISASSEMBLY AND ASSEMBLY >
ENGINE UNIT
(Piston pin clearance) = (Piston pin hole diameter) – (Piston pin
diameter)
• If clearance exceeds specification, replace either or both the pis-
ton/piston pin assembly and the connecting rod assembly with ref-
erence to the specification of each part.
• Use the piston selection table to replace piston/piston pin assem-
bly. Refer to
EM-107, "How to Select Piston and Bearing"
• Use the connecting rod bearing selection table to replace connect-
ing rod. Refer to
EM-107, "How to Select Piston and Bearing"
NOTE:
The connecting rod small end grade and piston pin hole (piston
pin) grade are provided only for the parts installed at the plant. For
service parts, no grades can be selected (only 0 grade is avail-
able).
• Follow "Connecting Rod Bushing Oil Clearance (Small End)" for
the values for each grade at the plant.
PISTON RING SIDE CLEARANCE
• Measure side clearance of the piston ring and piston ring groove
using suitable tool.
• If out of specification, replace piston and/or piston ring assembly.
PISTON RING END GAP
• Check if the diameter of the cylinder bore is within specification.
• Insert the piston ring into the middle of the cylinder using the pis-
ton, and measure the gap.
• If out of specification, replace piston ring.
Standard
: 0.002 - 0.006 mm (0.0001 - 0.0002 in)
KBIA2496E
KBIA2536E
Standard:
Top ring
: 0.035 - 0.085 mm (0.0014 - 0.0033 in)
2nd ring
: 0.030 - 0.070 mm (0.0012 - 0.0028 in)
Oil ring
: 0.015 - 0.185 mm (0.0006 - 0.0073 in)
Limit:
Top ring
: 0.11 mm (0.0043 in)
2nd ring
: 0.10 mm (0.0039 in)
SEM024AA
Standard
Top ring
: 0.23 - 0.33 mm (0.0091 - 0.0130 in)
2nd ring
: 0.25 - 0.40 mm (0.0098 - 0.0157 in)
Oil ring
: 0.20 - 0.60 mm (0.0079 - 0.0236 in)
Limit:
Top ring
: 0.56 mm (0.0220 in)
2nd ring
: 0.52 mm (0.0205 in)
Oil ring
: 0.96 mm (0.0378 in)
PBIC0118E
ENGINE UNIT
EM-99
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CONNECTING ROD BEND AND TORSION
• Check connecting rod alignment using suitable tool.
• If measurement exceeds the limit, replace connecting rod assem-
bly.
CONNECTING ROD BEARING (BIG END)
• Install the connecting rod cap without the connecting rod bearing
installed. After tightening the connecting rod bolt to the specified
torque, measure the connecting rod large end inside diameter.
EM-89, "Disassembly and Assembly"
.
• If measurement exceeds the standard, replace connecting rod.
CONNECTING ROD BUSHING OIL CLEARANCE (SMALL END)
Connecting Rod Inside Diameter (Small End)
• Measure inside diameter of bushing using suitable tool.
Piston Pin Diameter
Limit:
Bend
: 0.15 mm (0.0059 in) per 100 mm (3.94 in) length
Torsion
: 0.30 mm (0.0118 in) per 100 mm (3.94 in) length
SEM003F
SEM038F
Standard
: 57.000 - 57.013 mm (2.2441 - 2.2446 in)
PBIC1641E
Standard
: 22.000 - 22.006 mm (0.8661 - 0.8664 in)
PBIC0120E
EM-100
< UNIT DISASSEMBLY AND ASSEMBLY >
ENGINE UNIT
• Measure diameter of piston pin using suitable tool.
Connecting Rod Bushing Oil Clearance (Small End)
(Connecting rod small end oil clearance) = (Inside diameter of con-
necting rod small end) – (Piston pin diameter)
• If measured value exceeds the standard, replace the connecting
rod assembly and/or piston and piston pin assembly.
• If replacing the piston and piston pin assembly, use the Table for
Selective Fitting for Piston to select the piston corresponding to the
applicable bore grade of the cylinder block to be used. Refer to
EM-107, "How to Select Piston and Bearing"
Factory installed parts grading:
• Only grade 0 is available.
Unit: mm (in)
CYLINDER BLOCK DISTORTION
• Remove any oil, scale, gasket, sealant and carbon deposits from the cylinder block surface.
CAUTION:
Do not allow any debris to enter the oil or coolant passages.
• Measure block upper face for distortion in six directions as shown.
• If measurement exceeds the limit, replace cylinder block.
MAIN BEARING HOUSING INSIDE DIAMETER
Standard
: 21.989 - 21.995 mm (0.8657 - 0.8659 in)
PBIC0117E
Standard
: 0.005 - 0.017 mm (0.0002 - 0.0007 in)
KBIA2536E
Grade
0
Connecting rod bushing inside diameter
22.000 - 22.006
(0.8661 - 0.8664)
Piston pin diameter
21.989 - 21.995
(0.8657 - 0.8659)
Piston pin hole diameter
21.993 - 21.999
(0.8659 - 0.8661)
KBIA2496E
Standard
: 0.03 mm (0.0012 in)
Limit
: 0.1 mm (0.004 in)
SEM123C
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