Crankshaft Pulley: Removal
WARNING: This page is about a different variant/trim than selected.
NOTE:
Do not loosen or remove the crankshaft pulley bolt without first installing the special tools as instructed in this procedure. The crankshaft pulley and the crankshaft timing sprocket are not keyed to the crankshaft. The crankshaft, the crankshaft sprocket and the pulley are fitted together by friction, using diamond washers between the flange faces on each part. For that reason, the crankshaft sprocket is also unfastened if the pulley bolt is loosened. Before any repair requiring loosening or removal of the crankshaft pulley bolt, the crankshaft and camshafts must be locked in place by the special service tools, otherwise severe engine damage can occur.
NOTE:
During engine repair procedures, cleanliness is extremely important. Any foreign material, including any material created while cleaning gasket surfaces, that enters the oil passages, coolant passages or the oil pan can cause engine failure.
- 1.
Remove the RH fender splash shield. REFER to Front End Body Panels .
- 3.
Remove the accessory drive belt. REFER to Accessory Drive
- 4.
Remove the brake vacuum pump. REFER to Power Brake Actuation .
- 5.
Remove the valve cover. Refer to Valve Cover .
- 7.
Using a wrench on the flats of the intake camshaft to prevent cam rotation, remove the brake vacuum pump adapter.
- 9.
Turn the crankshaft clockwise until the No. 1 piston is 45 degrees BTDC using the guide holes on the engine front cover and the crankshaft pulley.
- 13.
Rotate the crankshaft slowly clockwise until the crankshaft contacts the 303-507.
NOTE:
The engine front cover is shown removed in graphic for clarity.
NOTE:
The 303-507 will contact the crankshaft and prevent it from turning past TDC. However, the crankshaft can still be rotated in the counterclockwise direction. The crankshaft must remain at the TDC position during the crankshaft pulley removal and installation.
- 14.
Install the 303-1565 into the rear of the intake camshaft slot as shown.
NOTE:
The camshaft timing slots are offset. If the 303-1565 cannot be installed, remove the 303-507 and rotate the crankshaft three-fourths of a revolution clockwise and repeat the previous 2 steps of this procedure.
NOTE:
The 303-1565 is for camshaft alignment only. Using this tool to prevent engine rotation can result in engine damage.
- 15.
Use a strap wrench to hold the crankshaft pulley. Use an air impact wrench to remove the crankshaft pulley bolt.- Remove and discard the crankshaft pulley bolt and washer.
- Remove the crankshaft pulley.
NOTE:
The crankshaft sprocket diamond washer may come off with the crankshaft pulley.
NOTE:
The crankshaft must remain in the TDC position during removal of the pulley bolt or damage to the engine can occur. Therefore, the crankshaft pulley must be held in place with the Strap Wrench and the bolt should be removed using an air impact wrench (1/2-in drive minimum).
