Oil Pump Stator Shaft Bushing Replacement: Notes

Tools Required

• J 7004-A  Universal Remover. See Special Tools .
• J 8092  Universal Driver Handle - 3/4 in - 10
• J 21465-01  Bushing Service Set. See Special Tools .
• J 25019-14  Bushing Installer. See Special Tools .
• J 34196-B  Transmission Bushing Service Set. See Special Tools .

Removal Procedure

Fig 1: Locating Pump Cover, Check Valve Retainer, Ball Assemblies & Cup Plugs
Courtesy of GENERAL MOTORS CORP.
1. Inspect the pump cover, all check valve retainer and ball assemblies (237), cup plugs (235, 236) and orificed cup plugs (238, 240).
Fig 2: View Of Pump Cover
Courtesy of GENERAL MOTORS CORP.
2. Inspect the pump cover for the following conditions:
   • Worn or damaged bushings
   • Foreign material or debris
   • Porosity
   • Scored or irregular mating faces
   • Cross channel leaks
Fig 3: Stator Shaft Front Bushing
Courtesy of GENERAL MOTORS CORP.
3. Using the J 21465-15  (1) with the J 7004-A  (2), remove the stator shaft front bushing (234). See Special Tools .
Fig 4: Identifying Special Tools J 25019-14, J 7004-A & Starter Shaft Rear Bushing
Courtesy of GENERAL MOTORS CORP.
4. Using the J 25019-14  (2) with the J 7004-A  (1), remove the stator shaft rear bushing (241). See Special Tools .