Camshaft Timing Chain Installation

Special Tools

• EN-952:  Fixing Pin
• EN-953-A:  Fixing Tool
• EN-955-1:  Fixing Pin from EN-955:  Kit

For equivalent regional tools, refer to Special Tools .

1. The engine should be adjusted to TDC.
2. The crankshaft should be locked with EN-952:  fixing pin.
3. The camshaft should be locked with EN-953-A:  fixing tool.
Fig 1: Timing Chain And Crankshaft Sprocket
Courtesy of GENERAL MOTORS CORP.
4. Install the timing chain (1) along with the crankshaft sprocket (2).
Fig 2: Timing Chain Tensioner Shoe And Bolt
Courtesy of GENERAL MOTORS CORP.
5. Install the timing chain tensioner shoe (1).
CAUTION: Refer to Fastener Caution .
6. Install the timing chain tensioner shoe bolt (2) and tighten to 20 N.m (15 lb ft).
Fig 3: Timing Chain Guide Right Side
Courtesy of GENERAL MOTORS CORP.
7. Install the timing chain guide right side (1).
8. Install the 2 timing chain guide right side bolts (2) and tighten to 8 N.m (71 lb in).
Fig 4: Timing Chain And Timing Chain Tensioner
Courtesy of GENERAL MOTORS CORP.
9. Push the timing chain (2) in direction to the timing chain tensioner (1) and Remove EN-955-1:  fixing pin (3).

The upper timing chain guide will be installed after the installation of the engine front cover and the fastening of the camshaft sprockets.