Summit L4-1597cc 1.6L DOHC (1990)
Fig. 23 Checking Timing Belt Tension
9.
Adjust timing belt tension as follows:
a. Rotate crankshaft 1/4 turn counterclockwise, then rotate clockwise to move No. 1 cylinder to top dead center.
b. Loosen tensioner pulley center bolt, then using wrench tool No. MD998752 or equivalent, and a torque wrench, apply a torque of 1.88 - 2.03
lb-ft, Fig. 21. Use a torque wrench capable of measurement within a range of 0-2.2 lb-ft. If vehicle body interferes with torque wrench, use a
jack to slightly raise engine.
c. Holding tensioner pulley with the tool, tighten tensioner pulley center bolt.
d. Screw set screw tool No. MD998738 or equivalent, into left engine support bracket until end of tool makes contact with tensioner arm, Fig. 22.
Turn the tool enough to relieve tension on auto tensioner rod, then remove set wire previously installed in auto tensioner.
e. Remove set screw tool.
f.
Rotate crankshaft clockwise two complete turns, then let sit for 15 minutes.
g. Measure clearance (A) between tensioner arm and auto tensioner body, Fig. 23. If clearance is not 0.15 - 0.18 inch (3.8 - 4.5 mm), repeat steps
a-g until clearance is correct.
h. If clearance (A) cannot be measured with engine in vehicle, screw in set screw tool No. MD998738 or equivalent, until end of tool makes
contact with tensioner arm.
i.
Starting in this position, count the number of turns of the tool required to bring tensioner arm in contact with auto tensioner body. Ensure
contact is made within 2.5-3 turns.
j.
Install rubber plug into timing belt rear cover.
10.
Reverse procedure to install remaining components, noting the following:
a. When installing rocker cover, apply sealant No. 4318034 or equivalent to semi-circular packing.
