Acura TSX / Honda Accord CL. Manual - part 872

Fig. 54: Supporting 5th Gear On Steel Blocks & Pressing The Mainshaft Out Of The 5th/6th 
Synchro Hub 

3. Support the 3rd gear (A) on steel blocks, and press the mainshaft out of the 3rd/4th synchro hub (B). Use 

of a jaw-type puller can damage the gear teeth. 

 

2004 Acura TSX 

2004 MANUAL TRANSMISSIONS Overhaul - ASU5 6-Speed

  

 

Fig. 55: Supporting The 3rd Gear On Steel Blocks & Pressing The Mainshaft Out Of The 3rd/4th 
Synchro Hub 

 

2004 Acura TSX 

2004 MANUAL TRANSMISSIONS Overhaul - ASU5 6-Speed

  

 

MAINSHAFT INSPECTION 

1. Inspect the gear and bearing surfaces for wear and damage, then measure the mainshaft at points A, B, C, 

D, and E. If any part of the mainshaft is less than the service limit, replace it. 

Standard: 

A Ball Bearing Surface (Transmission Housing Side): 27.987-28.000 mm (1.1019-1.1024 
in.)  

B Distance Collar Surface: 31.984-32.000 mm (1.2594-1.2598 in.)  

C Needle Bearing Surface: 38.984-39.000 mm (1.5348-1.5354 in.)  

D Ball Bearing Surface (Clutch Housing Side): 27.977-27.990 mm (1.1015-1.1020 in.)  

E Bushing Surface: 20.80-20.85 mm (0.819-0.821 in.)  

Service Limit: 

A: 27.93 mm (1.100 in.)  

B: 31.93 mm (1.257 in.)  

C: 38.93 mm (1.533 in.)  

D: 27.92 mm (1.099 in.)  

E: 20.75 mm (0.817 in.)  

Fig. 56: Inspecting Mainshaft Surfaces

 

2004 Acura TSX 

2004 MANUAL TRANSMISSIONS Overhaul - ASU5 6-Speed

  

 

2. Inspect the runout by supporting both ends of the mainshaft. Then rotate the mainshaft two complete 

turns while measuring with a dial gauge. If the runout is more than the service limit, replace the 
mainshaft. 

Standard: 0.02 mm (0.001 in.) Max.  

Service Limit: 0.05 mm (0.002 in.) 

Fig. 57: Inspecting Mainshaft Runout 

MAINSHAFT REASSEMBLY 

Exploded View 

 

2004 Acura TSX 

2004 MANUAL TRANSMISSIONS Overhaul - ASU5 6-Speed