Acura TSX / Honda Accord CL. Manual - part 434

Fig. 126: Identifying Rocker Arm & Shaft Components 

ROCKER ARM & SHAFT INSPECTION 

1. Remove the rocker arm assembly (see ROCKER ARM ASSEMBLY REMOVAL ).  

2. Measure the diameter of the shaft at the first rocker location. 

camshaft holder bolts. The bolts will keep the holders and rocker arms on 
the shaft.  

z

Prior to reassembling, clean all the parts in solvent, dry them, and apply 
lubricant to any contact points.  

z

Bundle the rocker arms with rubber bands to keep them together as a set.  

 

2004 Acura TSX 

2004 ENGINES 2.4L DOHC VTEC - TSX

  

 

Fig. 127: Measuring The Diameter Of The Shaft 

3. Zero the gauge (A) to the shaft diameter. 

 

2004 Acura TSX 

2004 ENGINES 2.4L DOHC VTEC - TSX

  

 

Fig. 128: Zeroing The Gauge To The Shaft Diameter 

4. Measure the inside diameter of the rocker arm, and check it for an out-of-round condition. 

Rocker Arm-To-Shaft Clearance: 

Standard (New): 0.025-0.052 mm (0.0010-0.0020 in.)  

Service Limit: 0.08 mm (0.003 in.) 

 

2004 Acura TSX 

2004 ENGINES 2.4L DOHC VTEC - TSX

  

 

Fig. 129: Measuring The Inside Diameter Of The Rocker Arm 

5. Repeat for all rocker arms and both shafts. If the clearance is over the limit, replace the rocker shaft and 

all overtolerance rocker arms. If any VTEC rocker arm needs replacement, replace the rocker arms 
(primary, mid and secondary), as a set. 

 

2004 Acura TSX 

2004 ENGINES 2.4L DOHC VTEC - TSX