Frontier SC King Cab 2WD V6-3.3L SC (VG33ER) (2002)
Timing Belt: Adjustments
After Engine Overhaul or Engine Reassembly
Tension Adjustment
AFTER BELT REPLACEMENT
If the timing belt was replaced (or to adjust tension on a used belt), follow the steps below.
1. Loosen tensioner lock nut, then turn tensioner clockwise and counterclockwise with hexagon wrench at least 2 times.
2. Tighten tensioner lock nut.
3. Turn crankshaft clockwise at least 2 times, then slowly set No. 1 piston at TDC on its compression stroke.
4. Measure deflection of timing belt midway between camshaft pulleys while pushing with 98 N (10 kg, 22 lb) force.
Belt deflection when engine is cold (Reference value): 13 - 15 mm (0.51 - 0.59 inch)/98 N (10 kg, 22 lb)
5. If belt deflection is not within specification, return to step 1 and repeat procedure.
Tension Adjustment
AFTER ENGINE OVERHAUL OR ENGINE REASSEMBLY (WITH ROCKER COVERS REMOVED)
If the engine was overhauled or previously disassembled (i.e. intake manifold and/or cylinder head were removed), follow the steps below.
1. Loosen rocker shaft bolts to relieve belt tension caused by the camshafts.
2. Loosen tensioner lock nut, keeping tensioner steady with hexagon wrench.
3. Turn tensioner 70 to 80 degrees clockwise with hexagon wrench to release belt tension, and temporarily tighten lock nut.
4. Turn crankshaft clockwise at least two times, then slowly set No. 1 piston at TDC on its compression stroke.