Lexus LS400 (2000 year). Service manual — part 93
A02872
RH Cylinder Head
LH Cylinder Head
A
A
Z15621
90
°
Painted Mark
90
°
A02867
A02868
EM–60
–
ENGINE MECHANICAL
CYLINDER HEAD
1242
NOTICE:
Do not drop the plate washer for cylinder head bolt into por-
tion A of the cylinder head. If dropped into portion A, the
plate washer will pass through the cylinder head and cylin-
der block into the oil pan.
(d)
Mark the front of the cylinder head bolt head with paint.
(e)
Retighten the cylinder head bolts by 90
°
in the numerical
order shown.
(f)
Check that the painted mark is now at a 90
°
angle to front.
5.
INSTALL ENGINE WIRE
(a)
Install the ground cable to RH cylinder head with the bolt.
(b)
Install the engine wire protector to the LH cylinder head
with the bolt.
(c)
Install the ground cable to LH cylinder head with the bolt.
(d)
Connect the 2 heated oxygen sensor connectors.
6.
INSTALL SPARK PLUGS
A02888
A02861
A02859
A02889
Service Bolt
SST
Sub Gear
Main Gear
Turn
A03172
–
ENGINE MECHANICAL
CYLINDER HEAD
EM–61
1243
7.
ASSEMBLE EXHAUST CAMSHAFT
(a)
Install the camshaft gear spring.
(b)
Install the camshaft sub–gear.
HINT:
Attach the pins on the gears to the gear spring ends.
(c)
Install the wave washer.
(d)
Using snap ring pliers, install the snap ring.
(e)
Mount the hexagon wrench head portion of the camshaft
in a vise.
NOTICE:
Be careful not to damage the camshaft.
(f)
Using SST, align the holes of the camshaft main gear and
sub–gear by turning camshaft sub–gear counterclock-
wise, and temporarily install a service bolt.
SST
09960–10010 (09962–01000, 09963–00500)
(g)
Align the gear teeth of the main gear and sub–gear, and
tighten the service bolt.
8.
INSTALL CAMSHAFT TIMING TUBES
(a)
Place a new oil seal to the timing tube.
NOTICE:
Be careful installation direction.
A03223
Align
1
2
3
4
A03173
A03174
Align
A02863
A02890
Seal Packing
EM–62
–
ENGINE MECHANICAL
CYLINDER HEAD
1244
(b)
Align the timing tube knock pin with the knock pin groove
of the camshaft drive gear, and temporarily install the
camshaft drive gear with the 4 bolts.
(c)
Using a 5 mm hexagon wrench, uniformly tighten the 4
bolts.
Torque: 7.5 N·m (80 kgf·cm, 66 in.·lbf)
NOTICE:
Be careful not to damage the camshaft timing tube.
(d)
Mount the hexagon wrench head portion of the intake
camshaft in a vise.
NOTICE:
Be careful not to damage the camshaft.
(e)
Align the camshaft knock pin with the camshaft timing
tube, and push the camshaft timing tube by hand until you
feel it touch the bottom.
(f)
Using a 10 mm hexagon wrench, install the set bolt.
Torque: 78 N·m (790 kgf·cm, 58 ft·lbf)
(g)
Install the seal washer and straight screw plug.
Torque: 15 N·m (150 kgf·cm, 11 ft·lbf)
9.
INSTALL CAMSHAFT HOUSING PLUGS
(a)
Remove any old packing (FIPG) material.
(b)
Apply seal packing to the camshaft housing plug grooves.
Seal packing:
Part No. 08826–00080 or equivalent
A03185
RH Cylinder Head
LH Cylinder Head
Front
A01874
Timing
Mark
No.2 Idler Pulley Bolt
Turn
A03178
Approx. 10
°
–
ENGINE MECHANICAL
CYLINDER HEAD
EM–63
1245
(c)
Install the 2 camshaft housing plugs to the cylinder heads.
10.
INSTALL CAMSHAFTS
NOTICE:
Since the thrust clearance of the camshaft is small, the
camshaft must be kept level while it is being installed. If the
camshaft is not kept level, the portion of the cylinder head
receiving the shaft thrust may crack or be damaged, caus-
ing the camshaft to seize or break. To avoid this, the follow-
ing steps should be carried out.
(a)
Set the crankshaft pulley position.
Turn the crankshaft pulley clockwise or counterclockwise,
and put the timing mark of the crankshaft pulley in line with
the centers of the crankshaft pulley bolt and idler pulley
bolt.
NOTICE:
Having the crankshaft pulley at the wrong angle can cause
the piston head and valve head to come into contact with
each other when you install the camshaft, causing dam-
age. So always set the crankshaft pulley at the correct
angle.
(b)
Install the RH camshafts.
(1)
Apply MP grease to the thrust portion of the intake
and exhaust camshafts.
(2)
Place the intake and exhaust camshafts.
(3)
Set the timing mark (1 dot mark) of the camshaft
main gear at approx. 10
°
angle.
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст