Water Pump: Service and Repair
Coolant PumpRemoval
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 may cause engine failure.
1. With the vehicle in NEUTRAL, position it on a hoist.
2. Drain the cooling system.
3. Remove the RH and LH catalytic converters.
4. Remove the LH cylinder block drain plug.
^ Allow coolant to drain from the cylinder block.
5. If equipped, remove the heat shield and disconnect the block heater electrical connector.
6. Remove the RH cylinder block drain plug or, if equipped, the block heater.
^ Allow coolant to drain from the cylinder block.
7. Remove the engine front cover.
8. Rotate the crankshaft clockwise and align the timing marks on the variable camshaft timing (VCT) assemblies as shown.
9. 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.
10. NOTE: The special tool will hold the camshafts in the TDC position.
Install the special tool onto the flats of the RH camshafts.
11. Remove the 3 bolts and the RH VCT housing.
12. Remove the 3 bolts and the LH VCT housing.
13. Remove and discard the VCT housing seals.
14. Remove the 2 bolts and the primary timing chain tensioner.
15. Remove the primary timing chain tensioner arm.
16. Remove the 2 bolts and the lower LH primary timing chain guide.
17. Remove the primary timing chain.
18. Remove the 2 bolts and the upper LH primary timing chain guide.
19. Remove the RH primary timing chain guide lower bolt.
20. 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.
21. Remove the 8 bolts and the coolant pump.
Installation
1. NOTE: Clean and inspect all sealing surfaces.
Install the coolant pump and the 8 bolts.
^ Tighten in the sequence shown to 10 Nm (89 lb-in).
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 lb-in).
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 lb-in).
5. Install the lower LH primary timing chain guide and the 2 bolts.
^ Tighten to 10 Nm (89 lb-in).
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 lockpin.
8. Install the primary tensioner and the 2 bolts.
^ Tighten to 10 Nm (89 lb-in).
^ Remove the lockpin.
9. As a post check, verify correct alignment of all timing marks.
10. Install new VCT housing seals.
11. NOTE: 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 lb-in).
12. NOTE: 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 lb-in).
13. Install the engine front cover.
14. Install the RH cylinder block drain plug or, if equipped, the block heater.
^ Tighten the cylinder block drain plug to 20 Nm (15 lb-ft).
^ Tighten the block heater to 40 Nm (30 lb-ft).
15. CAUTION: Make sure that the block heater wiring is routed and secured away from rotating or hot components, or damage to the wiring may occur.
If equipped, connect the block heater electrical connector and install the heat shield.
16. Install the LH cylinder block drain plug.
^ Tighten to 20 Nm (15 lb-ft) plus an additional 180 degrees.
17. Install the RH and LH catalytic converters.
18. Fill and bleed the cooling system.