1993 Mazda MX-3 Oil Pump Disassembly & Inspection Specs - Rotor Clearance

This document is page D2-12 from a factory-style service manual section covering the engine oil pump. It provides disassembly notes and inspection procedures with accompanying line-art illustrations. The disassembly notes explain removing the oil seal using a screwdriver protected with a rag, and removing the pump cover by taking out the mounting bolts with an impact screwdriver, then lifting off the cover. The inspection section covers the pressure (relief) spring: inspect for weakness and damage, and measure the free length, with a specified free length of 46.79 mm (1.842 in); replace the spring if out of spec. It then covers rotor clearance checks: inner rotor-to-tooth tip clearance should be 0.02–0.18 mm (0.0008–0.0070 in) with a maximum of 0.20 mm (0.0079 in), and outer rotor-to-pump body clearance should be 0.113–0.186 mm (0.0045–0.0073 in) with a maximum of 0.22 mm (0.0087 in); replace the rotor if clearances exceed limits. Five illustrations show the oil seal removal, pump cover removal, caliper measurement of the spring, and feeler-gauge measurement of both rotor clearances. The page was uploaded as part of a set for a 1993 Mazda MX-3; no year, model, or engine is stated on the page itself.