Hyundai Sonata 1991 Shop Manual page 22

MAINTENANCE SERVICE
Measure the deflection of the V-belt at the point shown in the
illustration.
5. Remove the air filter element.
6. Set a new air filter element and clamp the' air filter cover.
V-belt deflection [under a tension of 10 kg (22 lb)) .
9.0-10.4 mm (0.35-0.41 in.)
Y10EEOA
The air filter will become dirty and loaded with dust during use
and the filtering effect will be substantially reduced. Replace
with a new one.
1. Remove the air intake hose and air duct.
2. Remove the connector for the air-flow sensor from the air
fi Iter cover.
3. Disconnect the air filter cover clip.
4. Remove the air filter cover.
REPLACEMENT OF THE AIR FILTER
CAUTION
The air filter cover should be removed carefully because
it includes the air-flow sensor.
CHECKING AND ADJUSTMENT OF V-BELT
TENSION
Vl0EDOA
COOLING SYSTEM
Y10EFOA
Check the cooling system for damaged hoses, loose or seeping
connections, or other possible causes of coolant leaks.
Antifreeze
The engine cooling system is provided with a mixture of 50%
ethylene glycol anti-freeze and 50% water at the time of
manufacture.
Since the cylinder head and water pump body are made of
aluminum alloy casting, be sure to use a 30 to 60% ethylene
glycol antifreeze coolant to provide corrosion protection and
freezing prevention.
CAUTION
If the concentration of the antifreeze is below 30%. the
anticorrosion property will be adversely affected. In addition.
if the concentration is above 60%. both the antifreezing and
engine cooling properties will decrease, adversely affecting
the engine. For these reasons. be sure to maintain the
concentration level within the specified range.
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