Timing chain replacement

Good afternoon,

Did the timing chains fail? If they did, good chance you have bent valves which will require removal of the heads for inspection. You may have bent valves or damaged pistons. This could result in replacing the engine.

https://www.2carpros.com/articles/how-a-timing-belt-works

I attached 2 youtube videos of the procedure for you.

As far as information, there is a lot. You can go to Alldata.com/diy and get a pass for the car so he can access all the pictures and procedures for the job including the engine if needed.

https://www.youtube.com/watch?v=aKIN8AR95C4

https://www.youtube.com/watch?v=v778P2gb7Dw

Roy

Hi,

There are three different chains on this engine. I will provide the directions for one at a time. I'm not sure what he is replacing. The attached pics correlate with these directions.

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Primary chain

2005 Cadillac Truck SRX 2WD V6-3.6L VIN 7
Primary Camshaft Drive Chain and Sprockets Replacement

Removal Procedure
1. Remove the engine front cover. See: Timing Cover > Service and Repair

2. Remove the right bank secondary camshaft drive chain tensioner. See: Engine Overhaul 22. Secondary Timing Chain Tensioner Removal - Right

3. Remove the right bank secondary camshaft drive chain shoe. See: Engine Overhaul 23. Secondary Camshaft Drive Chain Shoe Removal - Right

4. Remove the right bank secondary camshaft drive chain guide. See: Engine Overhaul 24. Secondary Timing Chain Guide Removal - Right

5. Remove the right bank secondary camshaft drive chain. See: Engine Overhaul 25. Secondary Camshaft Intermediate Drive Chain Removal - Right

6. Remove the primary camshaft drive chain tensioner. See: Engine > Overhaul 26. Primary Camshaft Intermediate Drive Chain Tensioner Removal

7. Remove the primary camshaft drive chain upper guide. See: Engine Overhaul 27. Primary Timing Chain Guide Removal - Upper

pic 1

8. Remove the primary camshaft timing chain. See: Engine > Overhaul > 29. Primary Camshaft Intermediate Drive Chain Removal

Installation Procedure

pic 2

1. Install the primary camshaft timing chain. See: Engine > Overhaul > 120. Primary Camshaft Intermediate Drive Chain Installation

2. Install the primary upper camshaft drive chain guide. See: Engine > Overhaul > 122. Primary Timing Chain Guide Installation - Upper

3. Install the primary camshaft drive chain tensioner. See: Engine > Overhaul > 123. Primary Camshaft Intermediate Drive Chain Tensioner Installation

4. Install the right bank secondary camshaft drive chain. See: Engine > Overhaul > 124. Secondary Camshaft Intermediate Drive Chain Installation - Right

5. Install the right bank secondary camshaft drive chain guide. See: Engine > Overhaul > 125. Secondary Timing Chain Guide Installation - Right

6. Install the right bank secondary camshaft drive chain shoe. See: Engine > Overhaul > 126. Secondary Camshaft Drive Chain Shoe Installation - Right

7. Install the right bank secondary camshaft drive chain tensioner. See: Engine > Overhaul > 127. Secondary Timing Chain Tensioner Installation - Right

8. Install the engine front cover. See: Timing Cover > Service and Repair

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Secondary Camshaft Chain left side

2005 Cadillac Truck SRX 2WD V6-3.6L VIN 7
Secondary Camshaft Intermediate Drive Chain Replacement - Left

Removal Procedure
1. Remove the engine front cover. See: Timing Cover > Service and Repair

2. Remove the right bank secondary camshaft drive chain tensioner. See: Engine Overhaul 22. Secondary Timing Chain Tensioner Removal - Right

3. Remove the right bank secondary camshaft drive chain shoe. See: Engine Overhaul 23. Secondary Camshaft Drive Chain Shoe Removal - Right

4. Remove the right bank secondary camshaft drive chain guide. See: Engine Overhaul 24. Secondary Timing Chain Guide Removal - Right

5. Remove the right bank secondary camshaft drive chain. See: Engine Overhaul 25. Secondary Camshaft Intermediate Drive Chain Removal - Right

6. Remove the primary camshaft drive chain tensioner. See: Engine Overhaul 26. Primary Camshaft Intermediate Drive Chain Tensioner Removal

7. Remove the primary upper camshaft drive chain guide. See: Engine Overhaul 27. Primary Timing Chain Guide Removal - Upper

8. Remove the primary camshaft drive chain. See: Engine Overhaul 29. Primary Camshaft Intermediate Drive Chain Removal

9. Remove the right bank camshaft intermediate drive chain idler. See: Engine Overhaul 30. Timing Chain Idler Sprocket Removal - Right

10. Remove the left bank secondary camshaft drive chain tensioner. See: Engine Overhaul 31. Secondary Timing Chain Tensioner Removal - Left

11. Remove the left bank secondary camshaft drive chain shoe. See: Engine Overhaul 32. Secondary Camshaft Drive Chain Shoe Removal - Left

12. Remove the left bank secondary camshaft drive chain guide. See: Engine Overhaul 33. Secondary Timing Chain Guide Removal - Left

13. Remove the left bank camshaft intermediate drive chain idler. See: Engine Overhaul 35. Timing Chain Idler Sprocket Removal - Left

pic 3

14. Remove the left bank secondary camshaft drive chain. See: Engine Overhaul 34. Secondary Camshaft Intermediate Drive Chain Removal - Left

15. Clean and inspect all of the camshaft timing drive components. Replace components as necessary. See: Engine Overhaul 70. Camshaft Timing Drive Components Clean and Inspect

Installation Procedure

pic 4

1. Install the left bank secondary camshaft drive chain. See: Engine Overhaul 115. Secondary Camshaft Intermediate Drive Chain Installation - Left

2. Install the left bank camshaft intermediate drive chain idler. See: Engine Overhaul 114. Timing Chain Idler Sprocket Installation - Left

3. Install the left bank secondary camshaft drive chain guide. See: Engine Overhaul 116. Secondary Timing Chain Guide Installation - Left

4. Install the left bank secondary camshaft drive chain shoe. See: Engine Overhaul 117. Secondary Camshaft Drive Chain Shoe Installation - Left

5. Install the left bank secondary camshaft drive chain tensioner. See: Engine Overhaul 118. Secondary Timing Chain Tensioner Installation - Left

6. Install the right bank camshaft intermediate drive chain idler. See: Engine Overhaul 119. Timing Chain Idler Sprocket Installation - Right

7. Install the primary camshaft drive chain. See: Engine Overhaul 120. Primary Camshaft Intermediate Drive Chain Installation

8. Install the primary upper camshaft drive chain guide. See: Engine Overhaul 122. Primary Timing Chain Guide Installation - Upper

9. Install the primary camshaft drive chain tensioner. See: Engine Overhaul 123. Primary Camshaft Intermediate Drive Chain Tensioner Installation

10. Install the right bank secondary camshaft drive chain. See: Engine Overhaul 124. Secondary Camshaft Intermediate Drive Chain Installation - Right

11. Install the right bank secondary camshaft drive chain guide. See: Engine Overhaul 125. Secondary Timing Chain Guide Installation - Right

12. Install the right bank secondary camshaft drive chain shoe. See: Engine Overhaul 126. Secondary Camshaft Drive Chain Shoe Installation - Right

13. Install the right bank secondary camshaft drive chain tensioner. See: Engine Overhaul 127. Secondary Timing Chain Tensioner Installation - Right

14. Install the engine front cover. See: Timing Cover Service and Repair

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Secondary Camshaft Right Side

2005 Cadillac Truck SRX 2WD V6-3.6L VIN 7
Secondary Camshaft Intermediate Drive Chain Replacement - Right

Removal Procedure

1. Remove the engine front cover. See: Timing Cover Service and Repair

2. Remove the right bank secondary camshaft drive chain tensioner. See: Engine Overhaul 22. Secondary Timing Chain Tensioner Removal - Right

3. Remove the right bank secondary camshaft drive chain shoe. See: Engine Overhaul 23. Secondary Camshaft Drive Chain Shoe Removal - Right

4. Remove the right bank secondary camshaft drive chain guide. See: Engine Overhaul 24. Secondary Timing Chain Guide Removal - Right

pic 5

5. Remove the right bank secondary camshaft drive chain. See: Engine Overhaul 25. Secondary Camshaft Intermediate Drive Chain Removal - Right

Installation Procedure

1. Ensure the stage 1 camshaft timing is correct. See: Timing Component Alignment Marks Procedures Timing Chain Alignment Diagram

pic 6

2. Install the right bank secondary camshaft drive chain. See: Engine Overhaul 124. Secondary Camshaft Intermediate Drive Chain Installation - Right

3. Install the right bank secondary camshaft drive chain guide. See: Engine Overhaul 125. Secondary Timing Chain Guide Installation - Right

4. Install the right bank secondary camshaft drive chain shoe. See: Engine Overhaul 126. Secondary Camshaft Drive Chain Shoe Installation - Right

5. Install the right bank secondary camshaft drive chain tensioner. See: Engine Overhaul 127. Secondary Timing Chain Tensioner Installation - Right

6. Install the engine front cover. See: Timing Cover Service and Repair

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Let me know if this helps or if you have other questions. I have to be honest, this isn't an easy job. I'm a bit concerned that your mechanic doesn't have access to this type of info if he is doing the job.

Feel free to let me know if you have other questions or need help.

Take care,
Joe