1D-58 Engine Mechanical: For M16A Engine with VVT
4) Tighten main bearing cap No.1 bolts (1) – (10) and
main bearing cap No.2 bolts (11) – (20) gradually as
follows.
NOTE
If main bearing cap No.1 bolt is reused, make
sure to check main bearing cap No.1 bolt for
deformation referring to “Main Bearing Cap
No.1 Bolt” under “Main Bearings Inspection:
For M16A Engine with VVT”.
a) Tighten bolts (1) – (10) to 30 N
⋅
m (3.0 kgf-m,
22.0 lb-ft) according to numerical order in the
figure.
b) In the same manner as in Step a), tighten them
to 50 N
⋅
m (5.0 kgf-m, 36.5 lb-ft).
c) In the same manner as in Step a), retighten them
to 60
°
.
d) Tighten bolts (11) – (20) to 25 N
⋅
m (2.5 kgf-m,
18.0 lb-ft) according to numerical order in the
figure.
Tightening torque
Main bearing cap No.1 bolt ((1) – (10)): 30
Nm (3.0 kgf-m, 22.0 lb-ft), 50 Nm (5.0 kgf-m,
36.5 lb-ft) and then retighten by turning
through 60
°
Main bearing cap No.2 bolt ((11) – (20)): 25
N·m (2.5 kgf-m, 18.0 lb-ft)
5) Remove bearing caps and using scale (1) on
gauging plastic envelop (2), measure gauging plastic
width at its widest point. If clearance exceeds its
limit, replace bearing. Always replace both upper
and lower inserts as a unit.
A new standard bearing may produce proper
clearance. If not, it will be necessary to regrind
crankshaft journal for use of 0.25 mm undersize
bearing.
After selecting new bearing, recheck clearance.
Main bearing clearance
Standard: 0.021 – 0.041 mm (0.0008 – 0.0016 in.)
Limit: 0.054 mm (0.0021 in.)
Selection of Main Bearings
Standard bearing
If bearing is in malcondition, or bearing clearance is out
of specification, select a new standard bearing according
to the following procedure and install it.
1) First check journal diameter. As shown in the figure,
crank web No.2 has stamped numbers.
Three kinds of numbers (“1”, “2” and “3”) represent
the following journal diameters.
Stamped numbers on crank web No.2 represent
journal diameters marked with an arrow in the figure
respectively. For example, stamped number “1”
indicates that corresponding journal diameter is
51.9940 – 52.0000 mm (2.0471 – 2.0472 in.).
Crankshaft journal diameter
I2RH0B140137-01
Stamped
numbers
Journal diameter
1
51.9940 – 52.0000 mm
(2.0471 – 2.0472 in.)
2
51.9880 – 51.9939 mm
(2.0468 – 2.0470 in.)
3
51.9820 – 51.9879 mm
(2.0465 – 2.0467 in.)
I2RH0B140141-01
I2RH0B140142-01
www.CarGarage.ir
www.CarGarage.ir
www.CarGarage.ir
