Exhaust Camshaft Replacement
Special Tools
EN-50433 Adaptor - Exhaust Camshaft Sprocket Fixing
For equivalent regional tools, refer to Special Tools .
Removal Procedure
- Remove the engine front cover. Refer to Engine Front Cover Replacement .
- Remove the camshaft bearing rear cap. Refer to Camshaft Bearing Cap Removal - Rear .
- Set crankshaft 90° beyond TDC of combustion stroke of cylinder 1. The arrows on the camshaft sprockets must match as shown (1).
- Fix the exhaust camshaft sprocket with the EN-50433 sprocket fixing (2).
Note: Take extreme care to prevent any scratches or damage to the camshaft and the bearing surfaces. Set the camshaft guides aside in order as removed.
Note: Remove camshaft seat guide cap from cylinder 2 at least.
- Remove 4 camshaft seat guide cap retaining bolts (2).
- Remove the camshaft seat guide cap (1).
- Remove 8 camshaft seat guide cap retaining bolts (3).
- Remove 4 camshaft seat guide caps.
- Remove the exhaust camshaft (4).
Installation Procedure
- Ensure that the crankshaft is 90° beyond TDC of combustion stroke of cylinder 1.
Note: Take extreme care to prevent any scratches or damage to the camshaft and the bearing surfaces. Install the camshaft guides in order as removed.
Note: Clean the contact surfaces from camshaft, camshaft sprocket and camshaft sprocket bolt.
- Coat camshaft bearing surfaces with engine oil.
- Install the exhaust camshaft (4).
Note: Tighten the camshaft seat guide cap from cylinder 2 at first.
- Install 4 camshaft seat guide caps.
Caution: Refer to Fastener Caution in the Preface section.
- Install 8 camshaft seat guide cap retaining bolts (3) and tighten to 10 N·m (89 lb in).
- Install the camshaft seat guide cap (1).
- Install 4 camshaft seat guide cap retaining bolts (2) and tighten to 25 N·m (18 lb ft).
- The arrows on the camshaft sprockets must match as shown (1).
- Remove the EN-50433 sprocket fixing (2) from the exhaust camshaft sprocket.
- Rotate the engine 2 revolutions clockwise.
- Set crankshaft 90° beyond TDC of combustion stroke of cylinder 1.
• | The arrow on the inlet camshaft gear (1) must match with the arrow on the exhaust camshaft gear (2). |
• | The notch in the camshaft sprocket (4) must match with mark on the engine block (3) |
- Install the camshaft bearing rear cap removal. Refer to Camshaft Bearing Cap Installation - Rear .
- Remove the engine front cover. Refer to Engine Front Cover Replacement .
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© Copyright Chevrolet. All rights reserved |