Hummer H3. Manual — part 834

OIL PUMP ROTOR AND SLIDE MEASUREMENT

Fig. 374: Measuring Oil Pump Rotor & Slide
Courtesy of GENERAL MOTORS CORP.

Refer to Oil Pump Rotor and Slide Measurement .

Measure the oil pump rotor (212) thickness.

Measure the oil pump slide (203) thickness.

OIL PUMP BODY BUSHING REPLACEMENT

Tools Required

IMPORTANT: Measure the rotor and slide thickness for surface wear. The

rotor and slide measurements must both fall into the same
thickness range. If the rotor and slide measurements do not
fall into the same thickness range or are outside of all the
ranges, the oil pump must be replaced as an assembly.

2007 Hummer H3

2007 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E/4L70-E - H3

J 41778-1 Pump Body Bushing Installer/Remover. See Special Tools.

J 41778-2 Pump Body Bushing Position Stop. See Special Tools.

Procedure

Fig. 375: Inspecting Oil Pump Body
Courtesy of GENERAL MOTORS CORP.

1. Inspect the oil pump body for the following:

Worn or damaged bushings

Foreign material or debris

Porosity

Scored or irregular mating faces

Cross channel leaks

2007 Hummer H3

2007 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E/4L70-E - H3

Fig. 376: View Of Front Fluid Seal Retainer & Oil Seal Assembly
Courtesy of GENERAL MOTORS CORP.

2. Remove the front fluid seal retainer (244).

3. Remove the oil seal assembly (243).

2007 Hummer H3

2007 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E/4L70-E - H3

Fig. 377: Identifying Pump Body Bushing
Courtesy of GENERAL MOTORS CORP.

4. Using the J 41778-1 (1) with an arbor press, remove the pump body bushing (242). See

Special Tools.

2007 Hummer H3

2007 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E/4L70-E - H3