Nissan Primera P11. Manual — part 424
Example
Unit: mm (in)
Step
Cylinder No.
Item
1
2
3
4
1.
Measured
value
M1
M2
M3
M4
M1
M2
M3
M4
M1
M2
M3
M4
M1
M2
M3
M4
0.53
(0.0209)
0.56
(0.0220)
0.53
(0.0209)
0.56
(0.0220)
0.59
(0.0232)
0.55
(0.0217)
0.59
(0.0232)
0.55
(0.0217)
0.53
(0.0209)
0.58
(0.0228)
0.57
(0.0224)
0.54
(0.0213)
0.58
(0.0228)
0.51
(0.0201)
0.52
(0.0205)
0.57
(0.0224)
2.
Average value
of each piston
0.545
(0.0215)
0.570
(0.0224)
0.555
(0.0219)
0.545
(0.0215)
3.
Average value
of all pistons
0.55375 (0.02180)
4.
Round off
value
0.554 (0.0218)*1
5.
Determined
gasket thick-
ness (Tempo-
rarily)
1.20 (0.0472) (Grade 2)
6.
X: Maximum value of standard projection of selected gasket . . . 0.555 (0.0219) (in chart A) + 0.05 (0.0020) = 0.605 (0.0238)
Y: Maximum value in step 2 = 0.57 (0.0224)
The relationship between X and Y is “X > Y”. *2
7.
Determined
gasket thick-
ness (Finally)
1.20 (0.0472) (Grade 2)*2
*1: If the average value of projections for all pistons is, for example, 0.553 (7) 5, as shown in the table above, it should be rounded off as fol-
lows:
If the digit in the fourth decimal place (which is enclosed by a circle in this case) is smaller than 5, the average value should be regarded
as 0.553 mm (0.0218 in); if it is larger than 5, the average value should be regarded as 0.554 mm (0.0218 in).
*2: If X < Y, then the thicker grade 3 gasket must be used.
CYLINDER HEAD
CD20T
Installation (Cont’d)
EM-155
Removal
1.
Disconnect radiator lower hose and drain coolant.
2.
Drain coolant from cylinder block.
3.
Remove engine under cover.
4.
Remove front exhaust tube.
5.
Remove air inlet hose from turbocharger unit.
6.
Remove connector bolts of turbocharger oil feed tube and
hoses for turbocharger water feed and return tubes.
7.
Remove EGR tube.
8.
Remove exhaust manifold cover.
9.
Remove insulator.
10. Remove turbocharger oil return hose from oil pan.
11. Remove exhaust manifold fixing nuts and bolts.
NEM204
.
Turbocharger water
return tube
.
Turbocharger water
feed tube
.
Turbocharger oil
feed tube
NEM202
Exhaust
manifold
cover
Air inlet
hose
EGR
tube
Insulator
.
NEM203
.
Turbocharger
oil return hose
.
Oil pan
NEM205
Loosen in numerical order
p
1
p
2
p
3
p
4
TURBOCHARGER
CD20T
Removal
EM-156
12. Remove exhaust manifold with turbocharger unit.
Disassembly
1.
Remove oil tubes and water tubes. Before removing tubes, put
mating marks on tube connectors and turbocharger.
2.
Unbend locking plates for turbocharger unit fastening nuts.
3.
Remove exhaust outlet cover, exhaust outlet, and heat insula-
tor brackets.
4.
Remove exhaust manifold from turbocharger unit.
NEM206
Exhaust
manifold
Turbocharger
NEM207
Turbocharger
water return
tube
Turbocharger
oil feed tube
Turbo-
charger
water
feed tube
Turbocharger
oil return tube
SEM367F
Exhaust manifold side
Turbocharger side
SEM026F
NEM208
TURBOCHARGER
CD20T
Removal (Cont’d)
EM-157
Inspection
Perform the following checks. If NG, replace turbocharger unit.
OIL AND WATER TUBES
Check tubes for clogging.
ROTOR SHAFT
1.
Check rotor shaft for smooth rotation.
SEM366F
Check for cracks
Wastegate valve actuator
Compressor wheel
Compressor housing
Center housing
Check for leaks
Check for leaks
Turbine housing
Turbine wheel
Check for leaks
Wastegate valve
Actuator rod
SEM029F
SEM030F
TURBOCHARGER
CD20T
Inspection
EM-158
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