Infiniti Q45. Manual — part 570
CYLINDER BLOCK
EM-97
C
D
E
F
G
H
I
J
K
L
M
A
EM
4.
Follow step 3 and later in “When New Cylinder Block and Crankshaft are Used:”.
Main Bearings Selection Table (No.1 and No.5 journal)
PBIC2375E
EM-98
CYLINDER BLOCK
Main Bearings Selection Table (No.2, 3 and 4 journal)
PBIC2376E
CYLINDER BLOCK
EM-99
C
D
E
F
G
H
I
J
K
L
M
A
EM
Main Bearings Grade Table (All Journals)
Unit: mm (in)
Use Undersize Bearing Usage Guide
●
Use undersize (US) bearing when oil clearance with standard size main bearing is not within specification.
●
When using undersize (US) bearing, measure main bearing inner diameter of bearing installed and grind
main journal until oil clearance falls within specification.
Bearing undersize table
Unit: mm (in)
CAUTION:
Do not damage fillet R [1.5 mm (0.059 in)] when grinding crank-
shaft main journal in order to use undersized bearing.
Grade number
Thickness
Identification color
Remarks
0
2.483 - 2.486 (0.0978 - 0.0979)
Black
Grade and color are the same
for upper and lower bearings.
1
2.486 - 2.489 (0.0979 - 0.0980)
Brown
2
2.489 - 2.492 (0.0980 - 0.0981)
Green
3
2.492 - 2.495 (0.0981 - 0.0982)
Yellow
4
2.495 - 2.498 (0.0982 - 0.0983)
Blue
5
2.498 - 2.501 (0.0983 - 0.0985)
Pink
6
2.501 - 2.504 (0.0985 - 0.0986)
Purple
7
2.504 - 2.507 (0.0986 - 0.0987)
White
8
2.507 - 2.510 (0.0987 - 0.0988)
Red
01
UPR
2.483 - 2.486 (0.0978 - 0.0979)
Black
Grade and color are different
for upper and lower bearings.
LWR
2.486 - 2.489 (0.0979 - 0.0980)
Brown
12
UPR
2.486 - 2.489 (0.0979 - 0.0980)
Brown
LWR
2.489 - 2.492 (0.0980 - 0.0981)
Green
23
UPR
2.489 - 2.492 (0.0980 - 0.0981)
Green
LWR
2.492 - 2.495 (0.0981 - 0.0982)
Yellow
34
UPR
2.492 - 2.495 (0.0981 - 0.0982)
Yellow
LWR
2.495 - 2.498 (0.0982 - 0.0983)
Blue
45
UPR
2.495 - 2.498 (0.0982 - 0.0983)
Blue
LWR
2.498 - 2.501 (0.0983 - 0.0985)
Pink
56
UPR
2.498 - 2.501 (0.0983 - 0.0985)
Pink
LWR
2.501 - 2.504 (0.0985 - 0.0986)
Purple
67
UPR
2.501 - 2.504 (0.0985 - 0.0986)
Purple
LWR
2.504 - 2.507 (0.0986 - 0.0987)
White
78
UPR
2.504 - 2.507 (0.0986 - 0.0987)
White
LWR
2.507 - 2.510 (0.0987 - 0.0988)
Red
Size
Thickness
US 0.25 (0.0098)
2.618 - 2.626 (0.1031 - 0.1034)
PBIC2373E
EM-100
CYLINDER BLOCK
Inspection After Disassembly
NBS001P4
CRANKSHAFT END PLAY
●
Using a dial indicator, measure the clearance between the thrust
bearings and the crankshaft arm when crankshaft is moved fully
forward or backward.
●
If the measured value exceeds the limit, replace the thrust bear-
ings, and measure again. If it still exceeds the limit, replace
crankshaft also.
CONNECTING ROD SIDE CLEARANCE
●
Measure the side clearance between connecting rod and crank-
shaft arm with a feeler gauge.
●
If the measured value exceeds the limit, replace connecting rod,
and measure again. If it still exceeds the limit, replace crank-
shaft also.
PISTON TO PISTON PIN CLEARANCE
Piston Pin Hole Diameter
Measure the inner diameter of piston pin hole with an insidemi-
crometer.
Piston Pin Outer Diameter
Measure the outer diameter of piston pin with a micrometer.
Standard
: 0.10 - 0.25 mm (0.0039 - 0.0098 in)
Limit
: 0.30 mm (0.0118 in)
PBIC2377E
Standard
: 0.20 - 0.35 mm (0.0079 - 0.0138 in)
Limit
: 0.40 mm (0.0157 in)
PBIC0115E
Standard
: 21.993 - 22.005 mm (0.8659 - 0.8663 in)
PBIC0116E
Standard
: 21.989 - 22.001 mm (0.8657 - 0.8662 in)
PBIC0117E
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст