Inspection; Tension Adjustment - Honda Acura NSX 1991 Service Manual

Timing Belt

Inspection

1 . Remove the ignition coil covers and harness clamps.
2 . Disconnect the connectors, then remove the ignition
coils.
NOTE:
3. Remove the cylinder head covers.
4 . Inspect the timing belt for cracks and oil soaking.
NOTE:
Inspect this area
for wear.
Rotate pulley and
Inspect belt.
6-22
CAUTION:
l Always adjust timing belt tension with the engine cold.
Do not rotate the crankshaft when adjusting bolt is
l
loose (the timing belt will skid over the teeth of the
rear intake cam pulley).
than when the belt is removed for belt or parts
replacement.
NOTE:
l Tensioner is spring-loaded to apply proper tension to
the belt automatically after making the following ad-
justment.
tension.
Always rotate the crankshaft clockwise. Rotating it
l
counterclockwise may result
of the belt tension.
1.
Install the timing belt with the No. 1 piston at TDC
(page 6-25, 26).
of 0, @I, 0, and @I by turning each cam pulley.
3 . Loosen the timing belt adjusting bolt 1 80° (the slack
at @ should be eliminated).
Then, tighten the timing belt adjusting bolt.
Set the No. 1 piston at TDC (page 6-26)
5. Rotate the crankshaft clockwise g-teeth on camshaft
pulley (The blue mark on crankshaft pulleys should
be line up with the pointer on lower cover).
6. Loosen the timing belt adjusting bolt.
7 . Retighten the adjusting bolt torque to 43 N.m (4.3
kg-m, 31 lb-ft).
POINTER ON
LOWER COVER
in improper adjustment
ADJUSTING BOLT