1991 LEXUS SC400 Service Repair Manual

Page 1489 of 4087

LEXUS SC400 1991  Service Repair Manual 
(d)  RH Cylinder Head:Install the bearing cap (mark ª11º) in position with the arrow
mark facing rearward.
(e)  LH Cylinder Head: Install the bearing cap (mark ª16º) in position with the arrow
ma

Page 1490 of 4087

LEXUS SC400 1991  Service Repair Manual 
(d)  Insert service bolt A into the service hole of the camshaftsub±gear.
(e)  Using a screwdriver, align the holes of the camshaft drive
gear and sub±gear by turning camshaft subgear clockwise,
an

Page 1491 of 4087

LEXUS SC400 1991  Service Repair Manual 
(f)  Install the other 4 bearing caps in the sequence shown withthe arrow marks facing rearward.
HINT: Align the arrow marks at the front and rear of the cylin-
der head with the mark on the bearing

Page 1492 of 4087

LEXUS SC400 1991  Service Repair Manual 
(b)  Apply MP grease to the thrust portion of the exhaustcamshaft.
(c)  Align the timing marks (1 dot mark) of the  camshaft drive and
driven gears.
(d)  Place the exhaust camshaft on the cylinder he

Page 1493 of 4087

LEXUS SC400 1991  Service Repair Manual 
(j)  Uniformly tighten the 8 bolts on the bearing caps of theexhaust  camshaft in several passes, in the sequence shown.
Torque: 16 N Vm (160 kgf Vcm, 12 ft Vlbf)
(k)  Alternately  tighten the 2 bolt

Page 1494 of 4087

LEXUS SC400 1991  Service Repair Manual 
(e)  Install the front bearing cap (mark ª11º) with the arrow markfacing forward.
HINT:
wInstalling the front bearing cap will determine the thrust
portion of the camshaft.
w Align  the allow marks

Page 1495 of 4087

LEXUS SC400 1991  Service Repair Manual 
D. Install exhaust camshaft to LH cylinder head
(a)  Set the timing mark (2 dot marks) of the camshaft drive gearat 15  angle by turning the hexagon wrench head portion of
the intake camshaft with a

Page 1496 of 4087

LEXUS SC400 1991  Service Repair Manual 
(h)  Apply a light coat of engine oil on the threads and under theheads of the bearing cap bolts.
(i)  Install the oil feed pipe and 10 bolts.
HINT: Use bearing cap bolts 38 mm (1.50 in.) and 52 mm
(