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upper and lower side of the crescent (1) to the pres- DISASSEMBLY (1) Remove pump gears (1 and 2) (Fig. 186) from pump housing. (2) Remove the inner oil pump seal (1) (Fig. 187). 187). INSPECTION Before measuring any oil pump components, per- form a thorough visual inspection of all the compo- nents. If any sign of scoring, scratches, or other SIDE CLEARANCE Side clearance is the difference between the thick- ness of the pump gears and the depth of the pocket Acceptable side clearance: • Inner gear: 0.064 mm (0.0025 in) max • Outer gear: 0.069 mm (0.0027 in) max TIP CLEARANCE Tip clearance is the difference between the tip diameters of the gear teeth and the corresponding Tip clearance for the inner gear can be checked by moving the inner gear into tight mesh (2) (Fig. 188) Acceptable tip clearance for inner gear: • 0.85 mm (0.033 in) max Fig. 186 Oil Pump Gears 1 - OUTER PUMP ROTOR Fig. 187 Remove Oil Pump Seals 1 - INNER OIL SEAL Fig. 188 Oil Pump Measurement 1 - MEASURE 37MM FROM THE CORNER OF CRESCENT VA AUTOMATIC TRANSMISSION NAG1 - SERVICE INFORMATION 21 - 155 |