Water Pump: Service and Repair
Coolant Pump - 3.5LRemoval
CAUTION: 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.
All vehicles
1. Remove the engine front cover.
2. Disconnect the LH catalyst monitor sensor electrical connector.
3. Remove the 2 LH catalytic converter bracket bolts.
4. Remove the 4 nuts (3 shown) and the LH catalytic converter.
^ Discard the nuts and the gasket.
5. Remove the LH cylinder block drain plug.
^ Allow coolant to drain from the cylinder block.
All wheel drive (AWD) vehicles
6. Remove the 2 RH catalytic converter bracket bolts.
All vehicles
7. Remove the 4 nuts and the RH catalytic converter.
^ Discard the nuts and the gasket.
8. If equipped, remove the heat shield and disconnect the block heater electrical connector.
9. Remove the RH cylinder block drain plug or, if equipped, the block heater.
^ Allow coolant to drain from the cylinder block.
10. Rotate the crankshaft clockwise and align the timing marks on the variable camshaft timing (VCT) assemblies as shown.
11. NOTE: The special tool will hold the camshafts in the top dead center (TDC) position.
Install the special tool onto the flats of the LH camshafts.
12. NOTE: The special tool will hold the camshafts in the TDC position.
Install the special tool onto the flats of the RH camshafts.
13. Remove the 3 bolts and the RH VCT housing.
14. Remove the 3 bolts and the LH VCT housing.
15. Remove and discard the VCT housing seals.
16. Remove the 2 bolts and the primary timing chain tensioner.
17. Remove the primary timing chain tensioner arm.
18. Remove the 2 bolts and the lower LH primary timing chain guide.
19. Remove the primary timing chain.
20. Remove the 2 bolts and the upper LH primary timing chain guide.
21. Remove the RH primary timing chain guide lower bolt.
22. NOTE: The RH primary timing chain guide must be repositioned to allow the coolant pump to be removed.
Loosen the RH primary timing chain guide upper bolt.
^ Rotate the guide and tighten the bolt.
23. Remove the 8 bolts and the coolant pump.
Installation
All vehicles
NOTE: Clean and inspect all sealing surfaces.
1. Install the coolant pump and the 8 bolts.
^ Tighten in the sequence shown to 10 Nm (89 inch lbs.).
2. Loosen the RH primary timing chain guide upper bolt.
^ Position the RH primary timing chain guide and install the lower bolt.
^ Tighten the 2 bolts to 10 Nm (89 inch lbs.).
3. Install the primary timing chain with the colored links aligned with the timing marks on the VCT assemblies and the crankshaft sprocket.
4. Install the upper LH primary timing chain guide and the 2 bolts.
^ Tighten to 10 Nm (89 inch lbs.).
5. Install the lower LH primary timing chain guide and the 2 bolts.
^ Tighten to 10 Nm (89 inch lbs.).
6. Install the primary timing chain tensioner arm.
7. Reset the primary timing chain tensioner.
^ Rotate the lever counterclockwise.
^ Using a soft-jawed vise, compress the plunger.
^ Align the hole in the lever with the hole in the tensioner housing.
^ Install a suitable lock pin.
8. NOTE: It may be necessary to rotate the crankshaft slightly to remove slack from the timing chain and install the tensioner.
Install the primary tensioner and the 2 bolts.
^ Tighten to 10 Nm (89 inch lbs.).
^ Remove the lock pin.
9. As a post check, verify correct alignment of all timing marks.
10. Install new VCT housing seals.
11. CAUTION: Make sure the dowels on the VCT housing are fully engaged in the cylinder head prior to tightening the bolts.
Install the LH VCT housing and the 3 bolts.
^ Tighten in the sequence shown to 10 Nm (89 inch lbs.).
12. CAUTION: Make sure the dowels on the VCT housing are fully engaged in the cylinder head prior to tightening the bolts.
Install the RH VCT housing and the 3 bolts.
^ Tighten in the sequence shown to 10 Nm (89 inch lbs.).
13. Install the RH cylinder block drain plug or, if equipped, the block heater.
^ Tighten the cylinder block drain plug to 20 Nm (15 ft. lbs.).
^ Tighten the block heater to 40 Nm (30 ft. lbs.).
14. If equipped, connect the block heater electrical connector and install the heat shield.
AWD vehicles
15. NOTE: Do not tighten the 4 catalytic converter nuts at this time.
Using a new gasket, install the RH catalytic converter and the 4 new nuts.
16. Install the 2 RH catalytic converter support bracket bolts.
^ Tighten the 4 catalytic converter nuts to 40 Nm (30 ft. lbs.).
^ Tighten the 2 catalytic converter bracket bolts to 20 Nm (15 ft. lbs.).
Front wheel drive (FWD) vehicles
17. Using a new gasket, install the RH catalytic converter and the 4 new nuts.
^ Tighten to 40 Nm (30 ft. lbs.).
All vehicles
18. Install the LH cylinder block drain plug.
^ Tighten to 20 Nm (15 ft. lbs.) plus an additional 180 degrees.
19. Using a new gasket, install the LH catalytic converter and the 4 new nuts (3 shown).
^ Tighten to 40 Nm (30 ft. lbs.).
20. Install the 2 LH catalytic converter bracket bolts.
^ Tighten to 20 Nm (15 ft. lbs.).
21. Connect the LH catalyst monitor sensor electrical connector.
22. Install the engine front cover.