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ENGINE 18 OVERHAUL Oil pressure relief valve - remove 1. Remove circlip. ’O’ ring. 3. Remove relief valve spring and piston. Oil pump - inspection 1. Thoroughly clean oil pump drive gear, cover plate, rotors and housing. Remove all traces of 2. Check mating surfaces of cover plate, rotors and housing for scoring. 3. Assemble rotors and oil pump drive gear in housing ensuring that reference marks are 4. Using feeler gauges, check clearance between teeth of inner and outer rotors: 5. Remove oil pump drive gear, check depth of any wear steps on gear teeth: |