B2300 SE Regular Cab 2WD L4-2.3L VIN A (1997)
Timing Belt: Service and Repair
Camshaft Timing Check and Adjustment
Checking camshaft timing:
Note: Two access plugs are provided in the timing belt outer cover so that camshaft timing can be checked without removal of the cover or any other
parts.
1. Remove the access plugs from the timing belt outer cover if necessary.
2. Rotate the crankshaft so that the No.1 piston is rising on compression stroke.
3. Set the crankshaft to TDC by aligning the circular timing mark on the timing belt pulley with the TDC mark on the engine front cover with the
crankshaft key pointing straight up.
Caution: Always turn the engine in the direction of normal rotation (clockwise, as viewed from the front). Backward rotation may cause the
timing belt to jump time, due to the arrangement of the belt tensioner.
4. Look through the access hole in the timing belt outer cover, to make sure that the triangular timing mark on the camshaft pulley is lined up with the
triangle on the timing belt inner cover and that the diamond on the oil pump pulley aligns with the diamond on the timing belt inner cover.
5. If the marks on the camshaft pulley and timing belt pulley are not visible, rotate the crankshaft 360 degrees, align the marks and check again.
6. If necessary, adjust the camshaft timing. (See below.)
7. Install the access plugs.
Adjusting camshaft timing:
1. Remove the timing belt outer cover.
2. If belt timing is incorrect, loosen the belt tensioner spring bolt and the adjustment bolt. Position the SST on the tension spring roll pin, and retract
the belt tensioner. Tighten the adjustment bolt to hold the tensioner in the retracted position.
Note: SST 49 UN01 067 Camshaft Belt Tensioner Tool
3. Remove the bolt, washer and the crankshaft pulley.
4. Remove the timing belt and inspect it for wear or damage. If the timing belt is damaged, replace it.
5. Remove one spark plug from each cylinder and mark locations to ease installation.