Acura TSX / Honda Accord CL. Manual - part 480

Fig. 19: Removing The Pump Housing 

2. Check the inner-to-outer rotor radial clearance between the inner rotor (A) and outer rotor (B). If the 

inner-to-outer rotor radial clearance exceeds the service limit, replace the oil pump. 

Inner Rotor-To-Outer Rotor Radial Clearance: 

Standard (New): 0.06-0.16 mm (0.002-0.006 in.)  

Service Limit: 0.20 mm (0.008 in.). 

 

2004 Acura TSX 

2004 ENGINES Lubrication System - TSX

  

 

Fig. 20: Checking The Inner-To-Outer Rotor Radial Clearance Between The Inner Rotor 
And Outer Rotor 

3. Check the housing-to-rotor axial clearance between the rotor (A) and pump housing (B). If the housing-

to-rotor axial clearance exceeds the service limit, replace the oil pump. 

Housing-To-Rotor Axial Clearance: 

Standard (New): 0.035-0.070 mm (0.0013-0.0028 in.)  

Service Limit: 0.12 mm (0.005 in.) 

 

2004 Acura TSX 

2004 ENGINES Lubrication System - TSX

  

 

Fig. 21: Checking The Housing-To-Rotor Axial Clearance Between The Rotor & Pump 
Housing 

4. Check the housing-to-outer rotor radial clearance between the outer rotor (A) and pump housing (B). If 

the housing-to-outer rotor radial clearance exceeds the service limit, replace the oil pump. 

Housing-To-Outer Rotor Radial Clearance: 

Standard (New): 0.15-0.21 mm (0.006-0.008 in.)  

Service Limit: 0.23 mm (0.009 in.) 

 

2004 Acura TSX 

2004 ENGINES Lubrication System - TSX

  

 

Fig. 22: Checking The Housing-To-Outer Rotor Radial Clearance Between The Outer Rotor 
& Pump Housing 

5. Inspect both rotors and the pump housing for scoring or other damages. Replace the parts if necessary.  

BALANCER SHAFT INSPECTION 

1. Seat the balancer shaft by pushing it away from the oil pump sprocket end of the oil pump.  

2. Zero the dial indicator against the end of the balancer shaft, then push the balancer shaft back and forth 

and read the end play. 

Balancer Shaft End Play: 

Front Balancer Shaft: 

Standard (New): 0.063-0.108 mm (0.0025-0.0043 in.)  

Service Limit: 0.14 mm (0.0055 in.)  

Rear Balancer Shaft: 

Standard (New): 0.063-0.108 mm (0.0025-0.0043 in.)  

Service Limit: 0.14 mm (0.0055 in.) 

 

2004 Acura TSX 

2004 ENGINES Lubrication System - TSX