Timing Cover: Service and Repair

Engine Front Cover













Engine Front Cover - Accessories









Engine Front Cover









Removal

1. NOTICE: Do not loosen or remove the crankshaft pulley bolt without first installing the special tools as instructed in the crankshaft pulley procedure. The crankshaft pulley and the crankshaft timing sprocket are not keyed to the crankshaft. The crankshaft, the crankshaft sprocket and the pulley are fitted together by friction, using diamond washers between the flange faces on each part. For that reason, the crankshaft sprocket is also unfastened if the pulley bolt is loosened. Before any repair requiring loosening or removal of the crankshaft pulley bolt, the crankshaft and camshafts must be locked in place by the special tools, otherwise severe engine damage can occur.

Remove the crankshaft pulley. For additional information, refer to Crankshaft Pulley Service and Repair.

2. Disconnect the Crankshaft Position (CKP) sensor electrical connector and the wiring harness pin-type retainers.

3. NOTE: A new CKP sensor must be installed whenever the old sensor is removed.

Remove and discard the CKP sensor.

4. Remove the bolt and the accessory drive belt tensioner.

5. Remove the 3 bolts and the coolant pump pulley.

6. Disconnect the Power Steering Pressure (PSP) switch electrical connector.

7. Remove the 3 bolts and position the power steering pump aside.

8. NOTE: This step is needed only if a new front cover is being installed.

Using a 3 jaw puller, remove the fan drive pulley.





9. NOTE: There is one bolt behind the cooling fan drive pulley. This bolt can be accessed by lining up one of the holes in the pulley with the bolt.

Remove the 21 bolts and the engine front cover.

10. NOTICE: Do not use metal scrapers, wire brushes, power abrasive discs or other abrasive means to clean the sealing surfaces. These tools cause scratches and gouges, which make leak paths. Use a plastic scraping tool to remove all traces of old sealant.

Clean the sealing surface with silicone gasket remover and metal surface prep. Observe all warnings and cautions and follow all application directions contained on the packaging of the silicone gasket remover and metal surface prep.

Installation

1. NOTE: This step is needed only if a new front cover is being installed.

Install the fan drive pulley, using a nut and bolt with flat washers.





2. NOTICE: Do not use metal scrapers, wire brushes, power abrasive discs or other abrasive means to clean the sealing surfaces. These tools cause scratches and gouges, which make leak paths. Use a plastic scraping tool to remove all traces of old sealant.

NOTE: If not secured within 4 minutes, the sealant must be removed and the sealing area cleaned. To clean the sealing area, use silicone gasket remover and metal surface prep. Observe all warnings and cautions and follow all application directions contained on the packaging of the silicone gasket remover and metal surface prep. Allow to dry until there is no sign of wetness, or 4 minutes, whichever is longer. Failure to follow this procedure can cause future oil leakage.

Apply a 2.5 mm (0.1 in) bead of silicone gasket and sealant to the cylinder head and oil pan joint areas. Apply a 2.5 mm (0.1 in) bead of silicone gasket and sealant to the front cover.





3. Install the front cover. Tighten the 21 bolts in the sequence shown in 3 stages.
- Stage 1: Tighten the seventeen 8-mm bolts and the stud bolt to 10 Nm (89 lb-in).

- Stage 2: Tighten the 10-mm bolt to 25 Nm (18 lb-ft).

- Stage 3: Tighten the two 13-mm bolts to 48 Nm (35 lb-ft).





4. Position the power steering pump and install the bolts.
- Tighten to 25 Nm (18 lb-ft).

5. Connect the PSP switch electrical connector.

6. Position the coolant pump pulley and install the 3 bolts.
- Tighten to 20 Nm (177 lb-in).

7. Install the accessory drive belt tensioner and the bolt.
- Tighten to 50 Nm (37 lb-ft).

8. Install the crankshaft pulley. For additional information, refer to Crankshaft Pulley Service and Repair.

9. Install a 6 mm x 18 mm bolt through the crankshaft pulley and thread it into the front cover.





10. Position a new CKP sensor and loosely install the 2 bolts.





11. Adjust the CKP with the Crankshaft Sensor Aligner, and tighten the 2 bolts.
- Tighten to 7 Nm (62 lb-in).





12. Remove the 6 mm x 18 mm bolt.





13. Connect the CKP sensor electrical connector and the wiring harness pin-type retainers.