1997 Hyundai Sonata Timing Belt Replacement
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Removal 1. Remove all drive belts. Remove crankshaft pulley and water pump pulley. Remove upper and lower timing belt covers, noting bolt lengths and locations. 2. Turn crankshaft clockwise and align timing marks so No. 1 cylinder is at TDC. Timing marks on camshaft sprockets should be aligned at upper surface of cylinder head. See Fig. 1 . Camshaft sprocket dowel pins should face upward. CAUTION: DO NOT rotate crankshaft counterclockwise (as viewed from timing belt end of engine). If reusing timing belt, mark direction of belt rotation before removing. 3. Remove timing belt automatic tensioner. See Fig. 2 . Mark timing belt to indicate original direction of rotation. Remove timing belt. 4. Remove balance shaft access plug from cylinder block.
Removal 1. Remove all drive belts. Remove crankshaft pulley and water pump pulley. Remove upper and lower timing belt covers, noting bolt lengths and locations. 2. Turn crankshaft clockwise and align timing marks so No. 1 cylinder is at TDC. Timing marks on camshaft sprockets should be aligned at upper surface of cylinder head. See Fig. 1 . Camshaft sprocket dowel pins should face upward. CAUTION: DO NOT rotate crankshaft counterclockwise (as viewed from timing belt end of engine). If reusing timing belt, mark direction of belt rotation before removing. 3. Remove timing belt automatic tensioner. See Fig. 2 . Mark timing belt to indicate original direction of rotation. Remove timing belt. 4. Remove balance shaft access plug from cylinder block.
Insert Phillips screwdriver to block left balance shaft. See Fig. 3 .
Balance shaft is correctly locked in place if screwdriver can be
inserted at least 2.36″ (60 mm). If not, rotate oil pump sprocket so screwdriver can be inserted to correct depth. 5. Loosen balance shaft belt tensioner bolt. Remove front crankshaft sprocket and flange. Remove balance shaft timing belt.
Inspection 1. Check belt teeth for damage and oil contamination.
Inspect belt for glossy, hardened or non-elastic surface. Ensure belt is
not cracked, separated or showing canvas fiber. 2. Inspect all sprockets
for damage. Check tensioner pulley and idler pulley for grease leakage
and roughness in rotation. Replace components if damaged.
3. Inspect automatic tensioner for leaks. Check rod end of automatic
tensioner for wear. Measure distance from tensioner rod end to tensioner
housing. Distance should be
.47″ (12 mm). If not, replace automatic tensioner. NOTE: If plug at
bottom of tensioner protrudes past tensioner housing, place a washer over plug to prevent contacting vise when pushing rod into tensioner housing. 4. Retract rod into tensioner housing
by placing automatic tensioner assembly in a soft-jawed vise. Close
vise SLOWLY to push rod back into tensioner. See Fig. 4 . 5. Replace
automatic tensioner assembly if rod can be easily pushed into automatic
tensioner. While automatic tensioner is in vise, align holes in end of
tensioner rod and housing. Install pin through holes to lock tensioner in position.
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