Acura TSX / Honda Accord CL. Manual — part 432

Fig. 118: Removing The Camshaft Position (CMP) Pulse Plate B

4. Install the CMP pulse plate B in the reverse order of removal.

VTC ACTUATOR, EXHAUST CAMSHAFT SPROCKET REPLACEMENT

Removal

1. Remove the cam chain (see CAM CHAIN REMOVAL ).

2. Hold the camshaft with an open-end wrench, then loosen the variable valve timing control (VTC) actuator

mounting bolt and exhaust camshaft sprocket mounting bolt.

2004 Acura TSX

2004 ENGINES 2.4L DOHC VTEC - TSX

Fig. 119: Loosening The Variable Valve Timing Control (VTC) Actuator Mounting Bolt & Exhaust
Camshaft Sprocket Mounting Bolt

3. If the VTC actuator is reused, do the following steps:

a. Remove the intake camshaft, and seal the advance holes and retard holes in the No. 1 camshaft

journal with tape (see step 6 of VTC Actuator Inspection ).

b. Punch a hole in the tape over one of the advance holes (see step 7 of VTC Actuator Inspection ).

c. Apply air to the advance hole to release the lock (see step 8 of VTC Actuator Inspection ).

4. Remove the VTC actuator and exhaust camshaft sprocket.

2004 Acura TSX

2004 ENGINES 2.4L DOHC VTEC - TSX

Installation

1. Install the VTC actuator and exhaust camshaft sprocket.

2. Apply engine oil to the threads of the VTC actuator mounting bolt and exhaust camshaft mounting bolt,

then install them.

3. Hold the camshaft with an open-end wrench, then tighten the bolts.

Specified Torque:

VTC Actuator Mounting Bolt: 113 N.m (11.5 kgf.m, 83 lbf.ft)

Exhaust Camshaft Sprocket Mounting Bolt: 72 N.m (7.3 kgf.m, 53 lbf.ft)

NOTE:

Installing the VTC actuator to unlock position.

2004 Acura TSX

2004 ENGINES 2.4L DOHC VTEC - TSX

Fig. 120: Tightening The Bolts

4. Hold the camshaft, and turn the VTC actuator clockwise until you hear it click.

5. Install the cam chain (see CAM CHAIN INSTALLATION ).

CYLINDER HEAD INSPECTION FOR WARPAGE

1. Remove the cylinder head (see CYLINDER HEAD REMOVAL ).

2. Inspect the camshaft (see CAMSHAFT INSPECTION ).

3. Check the cylinder head for warpage. Measure along the edges, and three ways across the center.

z

If warpage is less than 0.05 mm (0.002 in.), cylinder head resurfacing is not required.

z

If warpage is between 0.05 mm (0.002 in.) and 0.2 mm (0.008 in.), resurface the cylinder head.

z

Maximum resurface limit is 0.2 mm (0.008 in.) based on a height of 104 mm (4.09 in.).

Cylinder Head Height:

Standard (New): 103.95-104.05 mm (4.093-4.096 in.)

Fig. 121: Checking The Cylinder Head For Warpage

2004 Acura TSX

2004 ENGINES 2.4L DOHC VTEC - TSX