Body And Gears: Notes

The pump assembly must be replaced if one or more of the conditions below is discovered during inspection.

Badly worn or damaged driven gear (10).

• Badly worn drive gear (11) driving face.
• Badly scratched or scored body sliding face (14) or driven gear (10).
• Badly worn or damaged gear teeth.

Measure the clearance between the body and the driven gear with a feeler gauge.

Standard:  0.10 mm - 0.18 mm (0.0039 in - 0.0070 in)

Limit:  0.20 mm (0.0079 in)

• Measure the clearance between the drive gear and driven gear with a feeler gauge.

  Standard:  0.11 mm - 0.24 mm (0.0043 in - 0.0094 in)

  Limit:  0.35 mm (0.0138 in)

  Fig 2: Measuring Clearance Between Drive Gear And Driven Gear

  Courtesy of ISUZU MOTOR CO.
• Measure the side clearance with a precision straight edge and a feeler gauge.

Clearance 

Standard:  0.03 mm - 0.09 mm (0.0011 in - 0.0035 in)

Limit:  0.15 mm (0.0059 in)