Infiniti G37 Coupe. Manual — part 640
HOW TO SELECT PISTON AND BEARING
EM-135
< DISASSEMBLY AND ASSEMBLY >
C
D
E
F
G
H
I
J
K
L
M
A
EM
N
P
O
Main Bearing
INFOID:0000000001547571
WHEN NEW CYLINDER BLOCK AND CRANKSHAFT ARE USED
1.
“MAIN BEARING SELECTION TABLE” rows correspond to
bearing housing grade on rear side of cylinder block.
2.
“MAIN BEARING SELECTION TABLE” columns correspond to
journal diameter grade on front side of crankshaft.
3.
Select main bearing grade at the point where selected row and column meet in “MAIN BEARING SELEC-
TION TABLE”.
4.
Apply sign at crossing in above step 3 to “MAIN BEARING GRADE TABLE”.
NOTE:
• “MAIN BEARING GRADE TABLE” applies to all journals.
• Service parts are available as a set of both upper and lower.
WHEN CYLINDER BLOCK AND CRANKSHAFT ARE REUSED
1.
Measure cylinder block main bearing housing inner diameter and crankshaft main journal diameter. Refer
to
2.
Correspond the measured dimension in “Cylinder block main bearing housing inner diameter” row of
“MAIN BEARING SELECTION TABLE”.
3.
Correspond the measured dimension in “Crankshaft main journal diameter” column of “MAIN BEARING
SELECTION TABLE”.
4.
Follow step 3 and later in “When New Cylinder Block and Crankshaft are Used”.
Bearing undersize table
: Refer to
EM-148, "Connecting Rod Bearing"
.
A
: Bearing housing grade No. 1
B
: Bearing housing grade No. 2
C
: Bearing housing grade No. 3
D
: Bearing housing grade No. 4
E
: Cylinder bore grade No. 1
F
: Cylinder bore grade No. 2
G
: Cylinder bore grade No. 3
H
: Cylinder bore grade No. 4
I
: Cylinder bore grade No. 5
J
: Cylinder bore grade No. 6
K
: Identification code
: Engine front
JPBIA0268ZZ
A
: Journal diameter grade No. 1
B
: Journal diameter grade No. 2
C
: Journal diameter grade No. 3
D
: Journal diameter grade No. 4
E
: Pin diameter grade No. 1
F
: Pin diameter grade No. 2
G
: Pin diameter grade No. 3
H
: Pin diameter grade No. 4
I
: Pin diameter grade No. 5
J
: Pin diameter grade No. 6
K
: Identification code
JPBIA0269ZZ
EM-136
< DISASSEMBLY AND ASSEMBLY >
HOW TO SELECT PISTON AND BEARING
MAIN BEARING SELECTION TABLE
MAIN BEARING GRADE TABLE (ALL JOURNALS)
UNDERSIZE BEARING USAGE GUIDE
• When the specified main bearing oil clearance is not obtained with standard size main bearings, use under-
side (US) bearing.
• When using undersize (US) bearing, measure the main bearing inner diameter with bearing installed, and
grind main journal so that the main bearing oil clearance satisfies the standard.
CAUTION:
In grinding crankshaft main journal to use undersize bearings,
keep the fillet R (A) [1.5 - 1.7 mm (0.059 - 0.067 in)].
JPBIA0264ZZ
Main bearing grade table (All journals)
: Refer to
JPBIA0216ZZ
HOW TO SELECT PISTON AND BEARING
EM-137
< DISASSEMBLY AND ASSEMBLY >
C
D
E
F
G
H
I
J
K
L
M
A
EM
N
P
O
Bearing undersize table
: Refer to
.
EM-138
< SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
General Specification
INFOID:0000000001547539
GENERAL SPECIFICATIONS
Drive Belt
INFOID:0000000001547540
DRIVE BELT
Spark Plug
INFOID:0000000001547541
SPARK PLUG
Unit: mm (in)
Cylinder arrangement
V-6
Displacement
cm
3
(cu in)
3,696 (225.53)
Bore and stroke
mm (in)
95.5 x 86.0 (3.76 x 3.386)
Valve arrangement
DOHC
Firing order
1-2-3-4-5-6
Number of piston rings
Compression
2
Oil
1
Number of main bearings
4
Compression ratio
11
Compression pressure
kPa (kg/cm
2
, psi)/200 rpm
Standard
1,667 - 2,354 (17 - 24, 242 - 341)
Minimum
1,226 (12.5, 178)
Differential limit between cylinders
98 (1.0, 14)
Cylinder number
Unit: degree
Valve timing
Intake valve open (BTDC)
63 -
−
64
Intake valve close (ABDC)
−
73 - 82
Exhaust valve open (BBDC)
64
Exhaust valve close (ATDC)
12
SEM713A
Tension of drive belt
Belt tension is not necessary, as it is automatically adjusted by drive belt auto-tensioner.
Make
DENSO
Standard type
FXE24HR11
Gap (Nominal)
1.1 (0.043)
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст