Nissan Pathfinder. Manual — part 570
CYLINDER BLOCK
EM-119
< UNIT DISASSEMBLY AND ASSEMBLY >
C
D
E
F
G
H
I
J
K
L
M
A
EM
N
P
O
11. Install the connecting rod bearings to the connecting rod and the
connecting rod cap.
• When installing the connecting rod bearings, apply engine oil
to the bearing surface (crankshaft side). Do not apply engine
oil to the back surface (connecting rod and cap side), but thor-
oughly clean it.
• When installing, align the connecting rod bearing protrusion
with the notch of the connecting rod to install.
• Check that the oil holes on the connecting rod and on the cor-
responding bearing are aligned.
12. Install the piston and connecting rod assembly into the corre-
sponding cylinder.
• Position the crankshaft pin corresponding to the connecting
rod to be installed onto the bottom dead center.
• Apply engine oil sufficiently to the cylinder bore, piston, and
crankshaft pin.
• Match the cylinder position with the cylinder No. (B) on the
connecting rod to install.
• Install the piston with the piston front mark (A) on the crown
facing the front of the engine (
) using a suitable tool.
CAUTION:
Be careful not to damage the crankshaft pin and cylinder wall, resulting from interference of the
connecting rod big end.
13. Install the connecting rod cap.
• Match the stamped cylinder number marks on the connecting
rod with those on the cylinder cap for installation.
• Install the piston connecting rod assembly and cap so that the
front mark on the cap and piston are facing the front of the
engine.
• Lubricate the threads and seat surfaces with new engine
oil.
14. Check the connecting rod cap bolts before reusing, then install
in their original position in the connecting rod. The bolts should
screw in smoothly by hand.
• Measure the outer diameter of the connecting rod cap bolt as
shown.
15. Tighten the connecting rod nuts in two stages using Tool:
PBIC0266E
(C)
: Oil hole
AWBIA0029ZZ
SEM457G
Outer diameter (d) of the connecting rod bolt
Standard
: 7.90 - 8.00 mm (0.3110 - 0.3150 in)
Limit
: 7.75 mm (0.3051 in)
SEM538G
EM-120
< UNIT DISASSEMBLY AND ASSEMBLY >
CYLINDER BLOCK
CAUTION:
Measure the tightening angle using Tool. Do not measure
visually.
• Apply engine oil to the threads and seats of the connecting rod
bolts and nuts.
• After tightening the nuts, make sure that the crankshaft rotates
smoothly.
• Check the connecting rod side clearance. If beyond the limit, replace the connecting rod and/or crank-
shaft.
16. Install the baffle plate to the main bearing beam.
17. Install the knock sensor.
• Make sure that there is no foreign material on the cylinder
block mating surface and the back surface of the knock sen-
sor.
• Install the knock sensor with the connector facing the rear of
the engine.
• Do not tighten the bolts while holding the connector.
• Make sure that the knock sensor does not interfere with other
parts.
CAUTION:
If any impact by dropping occurs to the knock sensor,
replace it with new one.
18. Install the cylinder head. Refer to
EM-89, "Removal and Installation"
19. Install the timing chain. Refer to
EM-62, "Removal and Installation"
20. Install the oil pan. Refer to
EM-37, "Removal and Installation (Upper Oil Pan)"
21. Remove engine from the stand.
22. Install the pilot converter with its chamfer facing crankshaft as
shown.
Stage 1
: 19 - 21 N·m (1.9 - 2.1 kg-m, 14 - 15 ft-lb)
Stage 2
: 90
° - 95° degrees clockwise
Tool number
: KV10112100 (BT-8653-A)
Connecting rod side clearance:
Standard
: 0.20 - 0.35 mm (0.0079 - 0.0138 in)
Limit
: 0.40 mm (0.0157 in)
: Crankshaft side
SEM953E
PBIC0810E
JPBIA0210ZZ
CYLINDER BLOCK
EM-121
< UNIT DISASSEMBLY AND ASSEMBLY >
C
D
E
F
G
H
I
J
K
L
M
A
EM
N
P
O
23. Install the rear oil seal retainer using Tool (A).
a. Loosen the wing nut (B) on the end of the Tool (A).
b. Insert the arbor (D) into the crankshaft pilot hole until the outer
lip (C) of the Tool (A) covers the edge of the crankshaft sealing
surface.
c. Tighten the wing nut (B) to secure the Tool (A) to the crankshaft.
d. Apply sealant to rear oil seal retainer as shown.
Use Genuine Silicone RTV Sealant, or equivalent. Refer to
GI-22, "Recommended Chemical Products and Sealants"
.
CAUTION:
• Installation should be done within 5 minutes after apply-
ing liquid gasket.
• Do not fill the engine with engine oil for at least 30 min-
utes after the components are installed to allow the seal-
ant to cure.
e. Lubricate the sealing surface of the new rear main seal with new engine oil.
f.
Slide the new rear main seal (1) over the Tool (A) and onto the
crankshaft.
g. Loosen the wing nut and push the threaded rod into the handle
to remove the Tool (A).
h. Tighten the rear oil seal retainer bolts to specification. Refer to
EM-87, "Removal and Installation of Rear Oil Seal"
24. Install the drive plate. Refer to
.
25. Install the engine assembly into the vehicle. Refer to
EM-102, "2WD : Removal and Installation"
(2WD) or
EM-107, "4WD : Removal and Installation"
(4WD).
Inspection
INFOID:0000000009177946
PISTON AND PISTON PIN CLEARANCE
Inner Diameter of Piston Pin Hole
• Measure the inner diameter of piston pin hole (dp).
Outer Diameter of Piston Pin
Tool number
: — (J-47128)
ALBIA0652ZZ
AWBIA0028ZZ
ALBIA0653ZZ
Standard diameter (dp)
Grade No. 0
: 21.993 – 21.999 mm (0.8659 – 0.8661 in)
Grade No. 1
: 21.999 – 22.005 mm (0.8661 – 0.8663 in)
AEM023
EM-122
< UNIT DISASSEMBLY AND ASSEMBLY >
CYLINDER BLOCK
• Measure outer diameter of piston pin (Dp).
Piston and Piston Pin Interference Fit
Standard Interference Fit = (Dp) – (dp)
• If clearance is exceeds specification, replace either or both of piston/piston pin assembly and connecting rod
assembly with reference to specification of each part.
PISTON RING SIDE CLEARANCE
• Measure side clearance of piston ring and piston ring groove with
feeler gauge.
• If out of specification, replace piston ring assembly. If clearance exceeds maximum limit with new rings,
replace piston.
PISTON RING END GAP
Standard diameter (Dp)
Grade No. 0
: 21.989 – 21.995 mm (0.8657 – 0.8659 in)
Grade No. 1
: 21.995 – 22.001 mm (0.8659 – 0.8662 in)
AEM024
: Engine front
(A)
: Piston grade No.
(B)
: Piston front mark
(C)
: Oil hole
(D)
: Connecting rod front mark
(E)
: Cylinder No.
(F)
: Pin grade No.
(G)
: Crown I.D. code
AWBIA1399ZZ
Standard
: 0.002 – 0.010 mm (0.0001 – 0.0004 in)
Standard Side Clearance
Top ring
: 0.045 - 0.080 mm (0.0018 - 0.0031 in)
2nd ring
: 0.030 - 0.070 mm (0.0012 - 0.0028 in)
Oil ring
: 0.045 - 0.125 mm (0.0018 - 0.0049 in)
Maximum Limit
Top ring
: 0.11 mm (0.0043 in)
2nd ring
: 0.1 mm (0.004 in)
Oil ring
: —
SEM024AA
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст