Nissan Note E12. Instruction — part 277
EM-108
< UNIT DISASSEMBLY AND ASSEMBLY >
[HR16DE]
CYLINDER BLOCK
CAUTION:
Do not rotate crankshaft.
• Remove main bearing cap and bearings, and using the scale (A)
on the plastigage bag, measure the plastigage width.
NOTE:
The procedure when the measured value exceeds the limit is
same as that described in the “Method by Calculation”.
MAIN BEARING CRUSH HEIGHT
• When main bearing cap is removed after being tightened to the
specified torque with main bearings (1) installed, the tip end of
bearing must protrude (B). Refer to
• If the standard is not met, replace main bearings.
CONNECTING ROD BEARING CRUSH HEIGHT
• When connecting rod cap is removed after being tightened to the
specified torque with connecting rod bearings (1) installed, the tip
end of bearing must protrude (B). Refer to
.
• If the standard is not met, replace connecting rod bearings.
MAIN BEARING CAP BOLT OUTER DIAMETER
• Measure the outer diameters (d
1
) and (d
2
) at two positions as
shown.
• If reduction appears in places other than (B) range, regard it as
(d
2
).
• If it exceeds the limit (a large difference in dimensions), replace
main bearing cap bolt with a new one.
CONNECTING ROD CAP BOLT OUTER DIAMETER
PBIC3278J
(A)
: Example
Standard
: There must be crush height.
PBIC3279J
(A)
: Example
Standard
: There must be crush height.
PBIC3279J
(A)
: (d1) measuring position
(B)
: (d2) measuring position
Limit [(d
1
) – (d
2
)]: 0.2 mm (0.0078 in)
PBIC4015E
CYLINDER BLOCK
EM-109
< UNIT DISASSEMBLY AND ASSEMBLY >
[HR16DE]
C
D
E
F
G
H
I
J
K
L
M
A
EM
N
P
O
• Measure the outer diameter (d) at position as shown.
• If reduction appears in a position other than (d), regard it as (d).
• When (d) is less than the limit (when it becomes thinner), replace
connecting rod cap bolt with a new one.
FLYWHEEL DEFLECTION (M/T models)
• Measure the deflection of flywheel contact surface to torque with a
suitable tool (A).
• Measure the deflection at 210 mm (8.27 in) diameter.
• If measured value is out of the standard, replace flywheel.
• If a trace of burn or discoloration is found on the surface, clean it
with sandpaper.
CAUTION:
When measuring, keep magnetic fields (such as dial indicator
stand) away from signal plate of the rear end of crankshaft.
Limit: 7.75 mm (0.3051 in)
PBIC4016E
Limit : 0.45 mm (0.0177 in) or less.
PBIC4006E
EM-110
< UNIT DISASSEMBLY AND ASSEMBLY >
[HR16DE]
HOW TO SELECT PISTON AND BEARING
HOW TO SELECT PISTON AND BEARING
Description
INFOID:0000000009444880
• The identification grade stamped on each part is the grade for the dimension measured in new condition.
This grade cannot apply to reused parts.
• For reused or repaired parts, measure the dimension accurately. Determine the grade by comparing the
measurement with the values of each selection table.
• For details of the measurement method of each part, the reuse standards and the selection method of the
selective fitting parts, refer to the text for the appropriate part.
Connecting Rod Bearing
INFOID:0000000009444881
WHEN NEW CONNECTING ROD AND CRANKSHAFT ARE USED
1. Apply connecting rod big end diameter grade stamped (C) on
connecting rod side face to the row in the “Connecting Rod
Bearing Selection Table”.
2. Apply crankshaft pin journal diameter grade stamped on crank-
shaft front side to the column in the “Connecting Rod Bearing
Selection Table”.
3. Read the symbol at the cross point of selected row and column in the “Connecting Rod Bearing Selection
Table”.
4. Apply the symbol obtained to the “Connecting Rod Bearing Grade Table” to select connecting rod bearing.
WHEN CONNECTING ROD AND CRANKSHAFT ARE REUSED
1. Measure the dimensions of the connecting rod big end diameter and crankshaft pin journal diameter indi-
vidually. Refer to
Selection points
Selection parts
Selection items
Selection methods
Between cylinder block and
crankshaft
Main bearing
Main bearing grade (bearing
thickness)
Determined by match of cylin-
der block bearing housing
grade (inner diameter of hous-
ing) and crankshaft journal
grade (outer diameter of jour-
nal)
Between crankshaft and con-
necting rod
Connecting rod bearing
Connecting rod bearing grade
(bearing thickness)
Combining service grades for
connecting rod big end diame-
ter and crankshaft pin outer di-
ameter determine connecting
rod bearing selection.
(A)
: Oil hole
(B)
: Cylinder number
(D)
: Front mark
PBIC3756E
(A) : Main journal diameter grade (No. 1 to 5 from left)
(B) : Crankshaft pin journal diameter grade (No. 1 to 4 from left)
PBIC3757E
HOW TO SELECT PISTON AND BEARING
EM-111
< UNIT DISASSEMBLY AND ASSEMBLY >
[HR16DE]
C
D
E
F
G
H
I
J
K
L
M
A
EM
N
P
O
2. Apply the measured dimension to the “Connecting Rod Bearing Selection Table”.
3. Read the symbol at the cross point of selected row and column in the “Connecting Rod Bearing Selection
Table”.
4. Apply the symbol obtained to the “Connecting Rod Bearing Grade Table” to select connecting rod bearing.
Connecting Rod Bearing Selection Table
Connecting Rod Bearing Grade Table
Undersize Bearings Usage Guide
• When the specified connecting rod bearing oil clearance is not obtained with standard size connecting rod
bearings, use undersize (US) bearings.
• When using undersize (US) bearing, measure the connecting rod bearing inner diameter with bearing
installed, and grind the crankshaft pin so that the connecting rod bearing oil clearance satisfies the standard.
CAUTION:
JPBIA4823GB
Connecting Rod Bearing Grade Table
: Refer to
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст