Nissan Terrano model r20 series 2004. Instruction — part 34
IDLER GEAR END PLAY
I
Tighten the holding bolts to the specification.
I
Measure the clearance between the gear plate and idler gear
using a feeler gauge.
Unit: mm (in)
Standard
Limit
Idler gear (A)
0.06 - 0.12
(0.0024 - 0.0047)
0.15 (0.0059)
Idler gear (B)
I
If it exceeds the limit, replace the idler gear, shaft, and gear
plate.
IDLER GEAR OIL CLEARANCE
I
Measure the inner diameter (d1) of the idler gear shaft.
Standard:
Idler gear (A)
43.000 - 43.020 mm (1.6929 - 1.6937 in) dia.
Idler gear (B)
28.600 - 28.620 mm (1.1260 - 1.1268 in) dia.
I
Measure the outer diameter (d2) of the idler shaft.
Standard:
Idler gear (A)
42.959 - 42.975 mm (1.6913 - 1.6919 in) dia.
Idler gear (B)
28.567 - 28.580 mm (1.1247 - 1.1252 in) dia.
I
Calculate the oil clearance.
Clearance = d1 − d2
Unit: mm (in)
Standard
Limit
Idler gear (A)
0.025 - 0.061
(0.0010 - 0.0024)
0.2 (0.0079)
Idler gear (B)
0.020 - 0.053
(0.0008 - 0.0021)
I
If it exceeds the limit, refer to each standard specification and
replace the idler gear and/or shaft.
BALANCER SHAFT END PLAY
I
Measure the clearance between the plate and gear using a
feeler gauge.
Standard: 0.07 - 0.22 mm (0.0028 - 0.0087 in)
I
If it exceeds the specification, replace the balancer shaft
assembly.
I
As the gears are press-fitted, there are no setting for individual
parts.
FEM037
FEM038
TIMING GEAR
ZD
Inspection (Cont’d)
EM-42
BALANCER SHAFT OIL CLEARANCE
Outer diameter of balancer shaft journal
Measure the outer diameter of the balancer shaft journal with a
micrometer.
Standard:
Front side
50.875 - 50.895 mm (2.0029 - 2.0037 in) dia.
Rear side
50.675 - 50.695 mm (1.9951 - 1.9959 in) dia.
Inner diameter of balancer shaft bearing
Measure the inner diameter of the balancer shaft bearing using a
bore gauge.
Standard:
Front side
50.940 - 51.010 mm (2.0055 - 2.0083 in) dia.
Rear side
50.740 - 50.810 mm (1.9976 - 2.0004 in) dia.
Oil clearance calculations
Oil clearance = Bearing inner diameter − Journal outer diameter
Standard: 0.045 - 0.135 mm (0.0018 - 0.0053 in)
Limit: 0.180 mm (0.0071 in)
BALANCER SHAFT BEARING REMOVAL AND
INSTALLATION
1. Remove balancer shaft front bearing.
FEM039
FEM040
SEM993BA
SEM380G
TIMING GEAR
ZD
Inspection (Cont’d)
EM-43
2. Using Tool, remove balancer shaft rear bearing from engine.
3. Install the rear and front balancer shaft bearings.
I
Install from the cylinder block hole to the rear journal and then
the front journal.
I
Install the groove of the balancer shaft bearing facing the front
and the under right direction.
(Align the guide plate and bar knock pin and then force in the
balancer shaft bearing.)
I
Align the balancer shaft bearing groove with the knock pin of
the bar (SST) and install the balancer shaft bearing.)
I
On rear journals, so the bearing does not get out of position,
wrap tape around the bar.
SEM381G
SEM382G
SEM383G
EMV0514D
TIMING GEAR
ZD
Inspection (Cont’d)
EM-44
I
Make an alignment mark 11.0±0.8 mm (0.433±0.031 in) from
the bar No. 2 engraved line with a marker pen. This alignment
mark
q
B
will be the point to where the rear bearing is pushed.
I
Insert the bar with the bearing installed into the cylinder block
and install the guide plate (SST).
I
Align the guide plate with the ZD engraving and install the bolts.
CAUTION:
Use a washer of the same thickness used on the front plate to
prevent the guide plate from bending.
I
Push the engraved bar alignment mark
q
B
to the same position
of the guide plate tip
q
A
.
I
After all the journals have been installed, make sure that all the
journal and cylinder block oil holes are aligned.
4. Install the front balancer shaft bearing.
I
Align the journal and cylinder block oil holes.
I
Use a drift (SST) to force in the tip of the journal to 8.0±0.3 mm
(0.315±0.012 in) inside the cylinder block.
I
After installing the journal, make sure that the journal and cyl-
inder block oil holes are aligned.
SEM385G
SEM384G
SEM386G
SEM380G
TIMING GEAR
ZD
Inspection (Cont’d)
EM-45
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