Chevrolet Trax: Camshaft timing chain installation

Special Tools

• EN-952 Fixing Pin
• EN-953-A Fixing Tool
• EN-955-10 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. 412: Timing Chain And Crankshaft Sprocket

4. Install the timing chain (1) along with the crankshaft sprocket (2).

Fig. 413: Timing Chain Tensioner Shoe And Bolt

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. 414: Timing Chain Guide Right Side

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. 415: Timing Chain And Timing Chain Tensioner

9. Push the timing chain (2) in direction to the timing chain tensioner (1) and remove the EN-955-10 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.

ENGINE FRONT COVER AND OIL PUMP INSTALLATION

Special Tools

• EN-952 Fixing Pin
• EN-953-A Fixing Tool
• EN-49977-100 Transmitter Disc Fixation
• EN-49977-200 Fixing Tool

For equivalent regional tools, refer to Special Tools.

Fig. 416: M6, M10 Front Cover Bolts And Engine Front Cover

NOTE: Mind the guide sleeves when installing engine front cover.

1. Install the engine front cover (3).
2. Install the 13 engine front cover bolts M6 (1).
3. Install the 2 engine front cover bolts M10 (2).

CAUTION: Refer to Fastener Caution .

4. Tighten the 13 engine front cover bolts M6 to 8 N.m (71 lb in).
5. Tighten the 2 engine front cover bolts M10 to 35 N.m (26 lb ft).

Camshaft Sprocket Fastening

Fig. 417: Intake Camshaft Sprocket Gearing And Special Tool

NOTE: Push the fixing tool in the direction of the arrow to ensure it fully engages.

1. Install EN-49977-200 fixing tool (2) and ensure that the gearing of the fixing tool engages with the intake camshaft sprocket gearing (1).

Fig. 418: Adjuster Bolt And Fastening Bolts

2. Tighten the 2 fastening bolts (1) of EN-49977-200 fixing tool while pushing the fixing tool in direction of the arrow.
3. Tighten the adjuster bolt (2).

Fig. 419: Fastening Bolts And Fixation Tool

NOTE: A wrong installation position is possible. Make sure that the holding tool is fully installed to the cylinder head in areas (3) and (5).

4. Install EN-49977-100 transmitter disc holder (2) to find and hold the correct position of the camshaft position exciter wheels.
5. Tighten the fastening bolts (6) of EN-49977-100 transmitter disc holder.

CAUTION: Refer to Fastener Caution .

CAUTION: Refer to Torque-to-Yield Fastener Caution .

6. Tighten the NEW intake camshaft sprocket bolt (4) while holding the hexagon (1) of the intake camshaft to 50 N.m (37 lb ft).
7. Tighten the intake camshaft sprocket bolt (4) while holding the hexagon (1) of the intake camshaft to an additional 60 degrees.
8. Tighten the NEW exhaust camshaft sprocket bolt while holding the hexagon of the exhaust camshaft to 50 N.m (37 lb ft).
9. Tighten the exhaust camshaft sprocket bolt while holding the hexagon of the exhaust camshaft to an additional 60 degrees.
10.  Remove EN-49977-100 transmitter disc holder and EN-49977-200 fixing tool.

Upper Timing Chain Guide Installation

Fig. 420: Upper Timing Chain Guide And Bolts

1. Install the upper timing chain guide (2).
2. Install the 2 upper timing chain guide bolts (1) and tighten to 8 N.m (71 lb in).
3. Remove EN-953-A fixing tool and EN-952 fixing pin.
4. Install crankshaft bearing cap tie plate hole plug and seal ring and tighten to 50 N.m (37 lb ft).

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