6.3.2. Oil pump Disassembly (1) Disassembly of oil pump drive gear a. Unscrew the screw and disas- semble the oil relief valve. b. Unfold the washer for the oil pump drive gear fixing nut and remove the nut. c. Disassemble the drive gear. EQM4006I (2) Remove the oil pump cover fixing nuts and disassemble the oil pump cover. The oil pump cover is fixed with the two dowel pins. (3) Disassemble the drive gear and driven gear. Inspection and correction EQM4007I (1) With steel rule and feeler gauge, measure the axial end play of the oil pump gear. Replace if the mea- sured value is beyond the limit.
Steel plate Feeler gauge EQM4008I (2) With a feeler gauge, measure the amount of backlash between the oil pump drive gear and driven gear. Replace if the measured value is beyond the limit. EQM4009I - 158 - MAINTENANCE OF MAJOR COMPONENTS End play 0.025 ~ 0.089 mm Backlash 0.50 ~ 0.64 mm