Chevrolet Trax: Drive belt removal

Special Tools

• EN-955 Locking Pins
• EN-48488 Holding Wrench

For equivalent regional tools, refer to Special Tools.

Fig. 474: Locking Pin And Wrench

1. Install EN-48488 wrench (1) to the drive belt tensioner.

NOTE: The drive belt tensioner must always be in a pre-tensioned state.

2. Move the drive belt tensioner clockwise until the drive belt tensioner can be fixed with the EN-955-20 locking pin (2).
3. Remove the drive belt.

AUTOMATIC TRANSMISSION FLEX PLATE REMOVAL

Special Tools

EN-652 Flywheel Holder

For equivalent regional tools, refer to Special Tools.

Fig. 475: Automatic Transmission Flex Plate

1. Install the EN-652 flywheel holder (1) in order to fix the automatic transmission flex plate (2).

Fig. 476: Automatic Transmission Flex Plate And Bolts

2. Remove and DISCARD the 6 automatic transmission flex plate bolts (2).
3.  Remove the automatic transmission flex plate (1).

ENGINE BLOCK CLEANING AND INSPECTION

Special Tools

EN-8087 Cylinder Bore Gauge

For equivalent regional tool, refer to Special Tools.

Cleaning Procedure

1. Remove any old thread sealant, gasket material or sealant.
2. Clean all the following areas with solvent:

• Sealing surfaces
• Cooling passages
• Oil passages

3. Clean all threaded and through holes with solvent.

WARNING: Wear safety glasses when using compressed air in order to prevent eye injury.

4. Dry the engine block with compressed air.

Visual Inspection

1. Inspect the crankshaft bearings journals for damage or spun bearings. The crankshaft bearing journals are not repairable, if the crankshaft bearing journals are damaged the engine block assembly must be replaced.
2. Inspect all sealing and mating surfaces for damage, repair or replace the engine block assembly if necessary.
3. Inspect all threaded and through holes for damage or excessive debris.
4. Inspect all bolts for damage, if damaged replace with NEW bolts only.
5. Inspect the cylinder walls for cracks or damage. The cylinder sleeves are not serviced separately, if the cylinders are damaged the cylinder block assembly must be replaced.
6. Inspect the engine block for cracks. Do not repair any cracks. If cracks are found, the cylinder block assembly must be replaced.

Measuring Procedure

Engine Block Flatness Inspection

Fig. 477: Inspecting Engine Block For Distortion Using Straight Edge

1. Inspect the engine block as shown for distortion. Use a straightedge (1).

Fig. 478: Inspecting Engine Block For Deflection Using Straight Edge

2. Inspect the engine block as shown for deflection. Use a straightedge (1).

Cylinder bore and crankshaft bearing bore

NOTE: Old bolts can be used for the measuring procedure.

1. Install the crankshaft bearing cap tie plate and tighten.

Fig. 479: Measuring Bearing Bore Concentricity And Alignment Using Gauge Tool

2. Inspect the crankshaft main bearing bores. Use the EN-8087 gauge (1) to measure the bearing bore concentricity and alignment. Refer to Engine Mechanical Specifications to find the permitted values.
3. Replace the engine block and crankshaft bearing cap tie plate if the crankshaft bearing bores are out of specification.

Fig. 480: Inspecting Cylinder Bore

4. Inspect the cylinder bores using the EN-8087 gauge (1). Inspect for the following items:

• Wear
• Taper
• Runout
• Ridging

5. Refer to Engine Mechanical Specifications to find the permitted values.
6. If the cylinder bores are out of specification, replace the engine block.
7. Remove the crankshaft bearing cap tie plate.

AUTOMATIC TRANSMISSION FLEX PLATE INSTALLATION

Special Tools

EN-652 Flywheel Holder

For equivalent regional tools, refer to Special Tools

1. Clean the 6 screw bores. Rework if necessary.

Fig. 481: Automatic Transmission Flex Plate And Bolts

2. Install the automatic transmission flex plate (1).
3. Install 6 NEW automatic transmission flex plate bolts (2).

Fig. 482: Automatic Transmission Flex Plate

4. Install EN-652 flywheel holder (1) in order to fix the automatic transmission flex plate (2).

CAUTION: Refer to Fastener Caution .

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

5. Tighten the 6 automatic transmission flex plate bolts in a cross sequence to 35 N.m(26 lb ft).
6. Tighten the 6 automatic transmission flex plate bolts in a cross sequence to an additional 30º.
7. Tighten the 6 automatic transmission flex plate bolts in a cross sequence to an additional 15º.

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