Timing Chain and Sprocket Removal (LS7)

Special Tools

• J 8433-1  Puller Bar
• J 41558  Crankshaft Sprocket Remover
• J-41558-10  Crankshaft Sprocket Remover Bolts
• J 41816-2  Crankshaft End Protector

For equivalent regional tools, refer to Special Tools

Fig 1: Crankshaft Gear & Timing Chain
Courtesy of GENERAL MOTORS COMPANY
CAUTION:

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.

1. Remove the camshaft sprocket bolts (206).
2. Remove the camshaft sprocket (205) and timing chain (208).
Fig 2: Timing Chain Dampener & Bolts
Courtesy of GENERAL MOTORS COMPANY
3. Remove the bolts (231) and chain dampener (232).
Fig 3: View Of Protector, Remover, And Crankshaft Sprocket Puller
Courtesy of GENERAL MOTORS COMPANY
4. Use the J 41816-2  protector (1), the J 41558  remover (2), the J-41558-10  bolts (3) and the J 41816-2  puller (4) in order to remove the crankshaft sprocket.
Fig 4: View Of Crankshaft Sprocket
Courtesy of GENERAL MOTORS COMPANY
5. Remove the crankshaft sprocket (207).
Fig 5: View Of Crankshaft Key & Keyway
Courtesy of GENERAL MOTORS COMPANY
6. Remove the crankshaft sprocket key, as required.