Tools Required
ā¢ | J 41558 Crankshaft
Sprocket Remover |
ā¢ | J 41665 Crankshaft
Balancer and Sprocket Installer |
Removal Procedure
- Remove the oil pump. Refer
to
Oil Pump, Screen, and Crankshaft Oil Deflector Replacement
.
- Rotate the crankshaft until the timing marks on the crankshaft
and the camshaft sprockets are aligned.
Notice: Do not turn the crankshaft assembly after the timing chain has been
removed in order to prevent damage to the piston assemblies or the valves.
- Remove the camshaft sprocket bolts.
- Remove the camshaft sprocket and timing chain.
- Use the J 8433
, the J 41816-2
and the J 41558
in order to remove the crankshaft sprocket.
- Remove the crankshaft
sprocket.
- Remove the crankshaft
sprocket key, if required.
- Clean and inspect the timing chain and sprockets. Refer to
Camshaft Timing Chain and Sprocket Cleaning and Inspection
in Engine Mechanical - 4.8L, 5.3L, and 6.0L Unit Repair.
Installation Procedure
- Install the key into the
crankshaft keyway, if previously removed.
- Tap the key (1) into the
keyway until both ends of the key bottom onto the crankshaft.
- Install the crankshaft
sprocket onto the front of the crankshaft. Align the crankshaft key with the
crankshaft sprocket keyway.
- Use the J 41665
in order to install the crankshaft sprocket.
Install the sprocket onto the crankshaft until fully seated against
the crankshaft flange.
- Rotate the crankshaft sprocket until the alignment mark is in
the 12 o'clock position.
Important:
ā¢ | Properly locate the camshaft sprocket locating pin with the camshaft
sprocket alignment hole. |
ā¢ | The sprocket teeth and timing chain must mesh. |
ā¢ | The camshaft and the crankshaft sprocket alignment marks MUST
be aligned properly. |
| Locate the camshaft sprocket alignment mark in the 6 o'clock position. |
- Install the camshaft sprocket and timing chain.
- If necessary, rotate the
camshaft or crankshaft sprockets in order to align the timing marks.
Notice: Use the correct fastener in the correct location. Replacement fasteners
must be the correct part number for that application. Fasteners requiring
replacement or fasteners requiring the use of thread locking compound or sealant
are identified in the service procedure. Do not use paints, lubricants, or
corrosion inhibitors on fasteners or fastener joint surfaces unless specified.
These coatings affect fastener torque and joint clamping force and may damage
the fastener. Use the correct tightening sequence and specifications when
installing fasteners in order to avoid damage to parts and systems.
- Install the camshaft sprocket bolts.
Tighten
Tighten the camshaft sprocket bolts to 35 NĀ·m (26 lb ft).
- Install the oil pump. Refer to
Oil Pump, Screen, and Crankshaft Oil Deflector Replacement
.