Water Pump: Service and Repair

Coolant Pump - 3.5L Ti-VCT

Special Tool(s)






Material(s)






Exploded View










Removal

1. NOTICE: During engine repair procedures, cleanliness is extremely important. Any foreign material, including any material created while cleaning gasket surfaces, that enters the oil passages, coolant passages or the oil pan can cause engine failure.

Drain the cooling system. REFER to Cooling System Draining, Filling and Bleeding - 3.5L Ti-VCT .

2. Remove the engine front cover. REFER to Engine Front Cover .

3. Rotate the crankshaft clockwise and align the timing marks on the intake VCT (Variable Camshaft Timing) assemblies as shown.





4. Remove the 3 bolts and the LH (Left Hand) valve train oil tube.





5. NOTE: 303-1248 will hold the camshafts in the TDC (Top Dead Center) position.
Install 303-1248 onto the flats of the LH (Left Hand) camshafts.





6. Remove the 3 bolts and the RH (Right Hand) valve train oil tube.





7. NOTE: 303-1248 will hold the camshafts in the TDC (Top Dead Center) position.
Install 303-1248 onto the flats of the RH (Right Hand) camshafts.





8. NOTE: The 3 steps are for primary timing chains which have colored links that are not visible.
Mark the timing chain link that aligns with the timing mark on the LH (Left Hand) intake VCT (Variable Camshaft Timing) assembly as shown.





9. Mark the timing chain link that aligns with the timing mark on the RH (Right Hand) intake VCT (Variable Camshaft Timing) assembly as shown.





10. NOTE: The crankshaft sprocket timing mark should be between the 2 colored links.
Mark the 2 timing chain links that align with the timing mark on the crankshaft sprocket as shown.





11. Remove the 2 bolts and the primary timing chain tensioner.





12. Remove the primary timing chain tensioner arm.





13. Remove the 2 bolts and the primary timing chain tensioner arm.





14. NOTE: Removal of the VCT (Variable Camshaft Timing) oil control solenoid will aid in the removal of the primary timing chain.

NOTE: A slight twisting motion will aid in the removal of the VCT (Variable Camshaft Timing) oil control solenoid.

NOTE: Keep the VCT (Variable Camshaft Timing) oil control solenoid free of dirt and debris.
Remove the bolt and the LH (Left Hand) intake VCT (Variable Camshaft Timing) oil control solenoid.





15. NOTE: Removal of the VCT (Variable Camshaft Timing) oil control solenoid will aid in the removal of the primary timing chain.

NOTE: A slight twisting motion will aid in the removal of the VCT (Variable Camshaft Timing) oil control solenoid.

NOTE: Keep the VCT (Variable Camshaft Timing) oil control solenoid free of dirt and debris.
Remove the bolt and the RH (Right Hand) intake VCT (Variable Camshaft Timing) oil control solenoid.





16. Remove the primary timing chain.





17. NOTICE: Do not use power tools to remove the bolt or the LH (Left Hand) primary timing chain guide may be damaged.

Remove the bolt and the upper LH (Left Hand) primary timing chain guide.





18. NOTE: The VCT (Variable Camshaft Timing) oil control solenoids are removed for clarity.

NOTE: 303-1530 is inserted through a hole in the top of the mega cap.
Compress the RH (Right Hand) secondary timing chain tensioner guide and let install 303-1530 in the hole on the rear of the secondary timing chain tensioner guide and let it hold against the mega cap to retain the tensioner in the collapsed position.





19. Remove and discard the 2 RH (Right Hand) VCT (Variable Camshaft Timing) assembly bolts.





20. Remove the 2 RH (Right Hand) VCT (Variable Camshaft Timing) assemblies and the secondary timing chain.





21. NOTICE: Do not use power tools to remove the bolt or the RH (Right Hand) primary timing chain guide may be damaged.

Remove the bolt and the RH (Right Hand) primary timing chain guide.





22. Place clean, lint-free shop towels in the oil pan opening to prevent coolant from entering the oil pan during coolant pump removal.

23. Remove the 8 bolts, the coolant pump and the gaskets.

- Discard the gaskets.

Installation

1. Install 2 new gaskets, the coolant pump and the 8 bolts.

- Install the bolts finger tight.

2. Tighten the coolant pump bolts in the sequence shown in 2 stages.
- Stage 1: Tighten to 10 Nm (89 lb-in).
- Stage 2: Tighten an additional 45 degrees.





3. Remove all of the shop towels from the oil pan opening.

4. NOTICE: Drain any coolant that has accumulated in the oil pan and clean any residual coolant from the front of the engine and the oil pan. Failure to remove all traces of the coolant can result in oil contamination and severe engine damage.

Remove the oil pan drain plug and allow any accumulated coolant to drain.

- Remove any residual coolant from the front of the engine and the oil pan using regulated compressed air and clean lint-free shop towels.
- Install the oil pan drain plug and tighten to 27 Nm (20 lb-ft).

5. Install the RH primary timing chain guide and the bolt.
- Tighten to 10 Nm (89 lb-in).





6. Assemble the RH (Right Hand) VCT (Variable Camshaft Timing) assembly, the RH (Right Hand) exhaust camshaft sprocket and the RH (Right Hand) secondary timing chain.

- Align the colored links with the timing marks.






7. NOTE: It may be necessary to rotate the camshafts slightly to install the RH (Right Hand) secondary timing assembly.
Position the 2 RH (Right Hand) VCT (Variable Camshaft Timing) assemblies and secondary timing chain on the camshafts by aligning the holes in the VCT (Variable Camshaft Timing) assemblies with the dowel pins in the camshafts.





8. Install the 2 new RH (Right Hand) VCT (Variable Camshaft Timing) assembly bolts and tighten in 4 stages.
- Stage 1: Tighten to 40 Nm (30 lb-ft).
- Stage 2: Loosen one full turn.
- Stage 3: Tighten to 25 Nm (18 lb-ft).
- Stage 4: Tighten an additional 180 degrees.





9. NOTE: The VCT (Variable Camshaft Timing) oil control solenoids are removed for clarity.
Compress the RH (Right Hand) secondary timing chain tensioner and remove 303-1530.

- Make sure the secondary timing chain is centered on the timing chain tensioner guides.






10. Install the upper LH (Left Hand) timing chain guide and the bolt.
- Tighten to 10 Nm (89 lb-in).





11. NOTE: It may be necessary to rotate the camshafts slightly to align the timing marks.
Install the primary timing chain with the colored links aligned with the timing marks on the VCT (Variable Camshaft Timing) assemblies and the crankshaft sprocket.





12. Install the lower LH (Left Hand) primary timing chain guide and the 2 bolts.
- Tighten to 10 Nm (89 lb-in).





13. Install the primary timing chain tensioner arm.





14. Reset the primary timing chain tensioner.

1. Release the ratchet detent.

2. Using a soft-jawed vice, compress the ratchet plunger.

3. Align the hole in the ratchet plunger with the hole in the tensioner housing.

4. Install a lockpin.






15. NOTE: It may be necessary to rotate the camshafts slightly to remove slack from the timing chain to install the tensioner.
Install the primary tensioner and the 2 bolts.
- Tighten to 10 Nm (89 lb-in).

- Remove the lockpin.






16. As a post-check, verify the correct alignment of all timing marks.

- There are 48 links between the RH (Right Hand) intake VCT (Variable Camshaft Timing) assembly colored link (1) and the LH (Left Hand) intake VCT (Variable Camshaft Timing) assembly colored link (2).
- There are 35 Links between the LH (Left Hand) intake VCT (Variable Camshaft Timing) assembly colored link (2) and the 2 crankshaft sprocket colored links (3).






17. NOTICE: Do not use excessive force when installing the VCT (Variable Camshaft Timing) oil control solenoid. Damage to the mega cap could cause the cylinder head to be inoperable. If it is difficult to install the VCT (Variable Camshaft Timing) oil control solenoid, inspect the bore and the VCT (Variable Camshaft Timing) oil control solenoid to make sure there are no burrs, sharp edges or contaminants present on the mating surface. Only clean the external surfaces as necessary.

NOTE: A slight twisting motion will aid in the installation of the VCT (Variable Camshaft Timing) oil control solenoid.

NOTE: Keep the VCT (Variable Camshaft Timing) oil control solenoid clean of dirt and debris.
Install the LH (Left Hand) intake VCT (Variable Camshaft Timing) oil control solenoid and the bolt.

1. Tighten the bolt in 2 stages.
- Stage 1: Tighten to 8 Nm (71 lb-in).
- Stage 2: Tighten an additional 20 degrees.






18. NOTICE: Do not use excessive force when installing the VCT (Variable Camshaft Timing) oil control solenoid. Damage to the mega cap could cause the cylinder head to be inoperable. If it is difficult to install the VCT (Variable Camshaft Timing) oil control solenoid, inspect the bore and the VCT (Variable Camshaft Timing) oil control solenoid to make sure there are no burrs, sharp edges or contaminants present on the mating surface. Only clean the external surfaces as necessary.

NOTE: A slight twisting motion will aid in the installation of the VCT (Variable Camshaft Timing) oil control solenoid.

NOTE: Keep the VCT (Variable Camshaft Timing) oil control solenoid clean of dirt and debris.
Install the RH (Right Hand) intake VCT (Variable Camshaft Timing) oil control solenoid and the bolt.

1. Tighten the bolt in 2 stages.
- Stage 1: Tighten to 8 Nm (71 lb-in).
- Stage 2: Tighten an additional 20 degrees.






19. Remove the RH (Right Hand)303-1248.





20. Install the RH (Right Hand) valve train oil tube and the 3 bolts.

1. Tighten the 3 bolts in 2 stages.
- Stage 1: Tighten to 8 Nm (71 lb-in).
- Stage 2: Tighten an additional 45 degrees.






21. Remove the LH (Left Hand)303-1248.





22. Install the LH (Left Hand) valve train oil tube and the 3 bolts.

1. Tighten the 3 bolts in 2 stages.
- Stage 1: Tighten to 8 Nm (71 lb-in).
- Stage 2: Tighten an additional 45 degrees.






23. Install the engine front cover. REFER to Engine Front Cover .

24. Remove and discard the engine oil filter.

25. NOTE: Lubricate the engine oil filter gasket with clean engine oil prior to installation.
Install a new engine oil filter.

1. Tighten the engine oil filter in 2 stages.
- Stage 1: Tighten to 5 Nm (44 lb-in).
- Stage 2: Tighten an additional 180 degrees.

26. Fill the engine with clean engine oil.

27. Fill and bleed the cooling system. REFER to Cooling System Draining, Filling and Bleeding - 3.5L Ti-VCT .