Illustrated Index - Honda Acura NSX 1991 Service Manual

Cylinder Head/Valve Train
Illustrated Index
CAUTION: To avoid damaging the cylinder head, wait
until the coolant temperature drops below 38OC (TOOoF)
before removing it.
NOTE:
l Replace rubber seals, if damaged or deteriorated.
layer of liquid gasket to the mating surface of the
cylinder head, cover and rubber seals to prevent the
rubber seal from failing off.
CAP NUT
6x 1.0 m m
CYLINDER HEAD
COVER
RUBER SEALS
Replace when damaged
or deteriorated
6x 1.0 mm
9 lb-ftl
\
TIMING BELT
REAR MIDDLE
COVER
TIMING BELT
FRONT MIDDLE
COVER
ADJUSTING BOLT
31 lb-ft)
For adjustment onl
CRANKSHAFT PULLEY
Remove any oil.
SPECIAL BOLT
16x 1.6 mm
181 lb-ft
Tightening torque for
a new crankshaft.
.
the bolt threads, but not
to the surface that
contacts the wahser.
specified level, run the engine for more than 3
minutes, then check for oil leakage.
@tighten hte crankshaft pulley bolt to 280 N.m (28
kg-m, 203 lb-ft), @ loosen it bolt, @I retighten it to
250 N-m (25 kg-m, 181 lb-ft).
CYLINDER
HEAD COVER
Remove any oil.
mm
6x 1.0
\
kg-m.
AIC BELT
9 lb-ftt Adjustment, Section 22
WASHER AND
GROMMET
I
RUBBER SEALS
Replace when damaged
or deteriorated.
TIMING BELT
inspection, page 6-22
Adjustment, page 6-22
Replacement, page 6-23
Replace every 90,000 miles
(144,000 km) o r 72 months.
surface facing in.
Remove any oil.
TIMING BELT
DRIVE PULLEY
Remove any oil.
with concave
surface facing out.
Remove any oil.
A/C ADJUSTING
PULLEY BRACKET
9 lb-ft)
6-3