Nissan Pathfinder. Manual — part 568
CYLINDER BLOCK
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UNIT DISASSEMBLY AND ASSEMBLY
CYLINDER BLOCK
Exploded View
INFOID:0000000009177944
AWBIA1354ZZ
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< UNIT DISASSEMBLY AND ASSEMBLY >
CYLINDER BLOCK
Disassembly and Assembly
INFOID:0000000009177945
CAUTION:
• Apply new engine oil to parts as marked in illustrations before installation.
• Place removed parts such as bearings and bearing caps in their proper order and direction.
• When installing the connecting rod nuts and main bearing cap bolts, apply new engine oil to the
threads and mating surfaces
• Do not allow any magnetic materials to contact the signal plate teeth on the drive plate.
DISASSEMBLY
1. Remove the engine assembly. Refer to
EM-102, "2WD : Removal and Installation"
(2WD) or
"4WD : Removal and Installation"
2. Remove the drive plate. Refer to
.
3. Remove pilot converter.
4. Cut away liquid gasket and remove rear oil seal retainer using
Tool. Refer to
EM-4, "Precaution for Liquid Gasket"
.
CAUTION:
• Be careful not to damage mount surface.
• If rear oil seal retainer is removed, replace it with a new
one.
NOTE:
Rear oil seal and retainer form a single part and are replaced as
an assembly.
1.
Reinforcement plate
2.
Drive plate
3.
Rear oil seal retainer
4.
Rear oil seal
5.
Sub harness
6.
Knock sensor
7.
Cylinder block
8.
Thrust bearing (upper)
9.
Main bearing (upper)
10. Crankshaft
11. Crankshaft key
12. Thrust bearing (lower)
13. Main bearing (lower)
14. Main bearing cap
15. Main bearing cap bolt
16. Main bearing beam
17. Baffle plate
18. Connecting rod bolt
19. Connecting rod bearing cap
20. Connecting rod bearing
21. Connecting rod
22. Snap ring
23. Piston pin
24. Piston
25. Oil ring
26. Second ring
27. Top ring
28. Pilot converter
29. Oil jet
30. Gasket (for Canada)
31. Cylinder block heater (for Canada)
A.
Crankshaft side
B.
Chamfered
C.
Follow the assembly procedure
D.
Front mark
Tool number
: ST16610001 (J-23907)
SEM005G
Tool number
: KV10111100 (J-37228)
SEM830E
CYLINDER BLOCK
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5. Install the engine on engine stand. Any commercially available
engine stand can be used.
CAUTION:
• Use an engine stand that has a load capacity [approxi-
mately 240kg (529 lb) or more] large enough for support-
ing the engine weight.
• Before removing the hanging chains, make sure the
engine stand is stable and there is no risk of overturning.
6. Remove the knock sensor.
CAUTION:
Carefully handle sensor to avoid shocking it.
7. Drain the engine of all engine coolant and engine oil.
8. Remove the oil pan. Refer to
EM-37, "Removal and Installation (Upper Oil Pan)"
.
9. Remove the timing chain. Refer to
EM-62, "Removal and Installation"
10. Remove the cylinder head. Refer to
EM-89, "Removal and Installation"
.
11. Remove the piston and connecting rod assemblies.
a. Position the crankshaft pin corresponding to the connecting rod
to be removed onto the bottom dead center.
b. Remove the connecting rod cap.
c. Using a hammer handle or similar tool, push the piston and con-
necting rod assembly out to the cylinder head side.
• Before removing the piston and connecting rod assembly,
check the connecting rod side clearance. Refer to
12. Remove the connecting rod bearings.
CAUTION:
• When removing the connecting rod side bearings, note the installation position. Keep them in
the correct order.
13. Remove the piston rings from the piston.
• Use a piston ring expander.
CAUTION:
• When removing the piston rings, be careful not to damage
the piston. Do not expand the rings excessively.
• Be careful to mark the rings if they are to be reused so
they are installed in their original position.
• Before removing the piston rings, check the piston ring side clear-
ance. Refer to
.
14. Remove the piston from the connecting rod as follows.
a. Using a snap ring pliers, remove the snap ring.
CAUTION:
Do not reuse snap rings, always replace with new ones.
PBIC0085E
PBIC0086E
PBIC0087E
PBIC0260E
EM-114
< UNIT DISASSEMBLY AND ASSEMBLY >
CYLINDER BLOCK
b. Heat the pistons to 60
° - 70°C (140° - 158°F).
WARNING:
Pistons contain heat. When working, wear protective equip-
ment to avoid getting burned.
c.
Push out the piston pin with a suitable tool with an outer diame-
ter of approximately 20 mm (0.8 in).
15. Remove the baffle plate from the main bearing beam.
16. Loosen the bolts in the reverse order shown and remove the
main bearing beam, bearing caps and crankshaft.
• Before loosening the main bearing cap bolts, measure the
crankshaft side clearance.
Refer to
.
17. Remove the oil jets and dowel pins.
18. Remove the main bearings and thrust bearings from the cylinder
block and main bearing caps.
• When removing them, note the direction and position. Keep
them in the correct order for installation.
ASSEMBLY
1. Blow out the engine coolant and engine oil passages and cylinder bore to remove any foreign materials.
CAUTION:
Use goggles to protect your eyes.
SEM965A
PBIC0262E
: Engine front
JPBIA0439ZZ
PBIC0898E
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