Crankshaft Gear/Sprocket: Service and Repair

SPECIAL TOOLS REQUIRED





REMOVAL
1. Remove camshaft timing chains and timing chain tensioners.
2. Remove crankshaft sprockets from crankshaft.
3. Remove camshaft sprocket retaining bolts, washers, camshaft sprockets and camshaft sprocket spacers.

NOTE: Cam Positioning Tool Adapters 303-413 and Cam Positioning Tool 303-380 must be installed on camshafts to prevent camshafts from rotating.

4. Inspect crankshaft sprockets and camshaft sprockets for wear or damage and replace as required.

CAUTION: Do not rotate crankshaft and/or camshafts or possible damage to engine may occur.

INSTALLATION
1. Position camshaft sprocket spacers and camshaft sprockets on camshafts.

NOTE: Cam Positioning Adapters 303-413 and Cam Positioning Tool 303-380 must be installed on camshafts to prevent camshafts from rotating.

2. Install washers and camshaft sprocket retaining bolts. Do not tighten at this time.








3. Install crankshaft sprockets onto crankshaft. Refer to the illustration for proper crankshaft sprocket installation.

NOTE: Crankshaft sprockets are identical. They may only be installed one way.

4. Install camshaft timing chains and timing chain tensioners.