Toyota Supra 1990 Manual page 62

EM-30
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Matchmark
ENGINE MECHANICAL - Timing Belt
Tension
EM2916
EM3005
EM2916
EM3018
EM3045
10. INSTALL TIMING BELT
(a) Install the timing belt to the intake camshaft timing
pulley, the exhaust camshaft timing pulley and then
the idler pulley.
(b) Check that the belt has tension as shown in the
illustration.
(c) Loosen the idler pulley mount bolt until the pulley is
moved slightly by the spring tension.
(d) Torque the idler pulley mount bolt.
Torque: 500 kg-em (36 ft-Ib, 49 Nom)
HINT: Check that the timing belt tension at A is equal to
that at B.
If not, readjust with the idler pulley.
(e) Turn the crankshaft pulley two revolutions clockwise
from TOC to TOC.
(f)
Check that the matchmarks on the camshaft timing
pulleys are aligned with those on the No.2 timing belt
cover.
If the marks do not aligh, remove the timing belt and rein-
stall it.
11. CHECK TIMING BELT TENSION
(a) Turn both the intake and exhaust camshaft pulleys
inward at the same time to slacken the timing belt at
position A.