No 2-3 Shift or 2-3 Shift slipping, Rough or Hunting
Checks 
 | Causes 
 | 
Oil Pump (4) 
 | Stator shaft bushings scored or off location 
 | 
Valve Body Assembly (60) 
 | 
|     •  | 2-3 Shift valve train stuck |  
  
|     •  | Gaskets or spacer plate incorrect, mispositioned or damaged |  
  
|     •  | 2-3 Accumulator valve stuck |  
  
|     •  | Chips in servo feed oil, orifice #7 in spacer plate |  
  
|     •  | Mislocated valve body to spacer plate checkball or checkballs |  
  
 | 
Input Housing Assembly (620-621, 646-655) 
 | 
|     •  | 3-4 clutch or forward clutch plates worn |  
  
|     •  | Excessive clutch plate travel |  
  
|     •  | Cut or damaged 3-4 clutch or forward clutch piston seals |  
  
|     •  | Porosity in input clutch housing or piston |  
  
|     •  | 3-4 clutch piston checkball stuck, damaged or not sealing |  
  
|     •  | Restricted apply passages |  
  
|     •  | Forward clutch piston retainer and ball assembly not seating |  
  
|     •  | Sealing balls loose or missing |  
  
|     •  | Input housing (621) cracked or broken |  
  
 | 
Case (103) 
 | 3rd accumulator retainer and ball assembly not seating 
 | 
2-4 Servo Assembly (13-28) 
 | 2nd apply piston seals missing, cut or damaged 
 |