REAR DRUM BRAKE (LT18B) Removal and Installation of Adjuster When installing, measure inner diameter of the drum and adjust so that slice outer diameter at its center is smaller than drum inner diameter by 0.45 to 0.65 mm (0.0177 to 0.0256 in) by rotating the adjuster. Then operate parking brake lever to adjust shoe clearance. Drum Inspection Standard inner diameter: 1800 mm (7.09 in) Maximum inner diameter: 181.0 mm (7.13 in) Out-of-roundness (ellipticityl: Less than 0.03 mm (0.0012 in) Radial run-out (Total indicator reading): Less than 0.05 mm (0.0020 in) Contact surface with which linings come into contact should be finefinished with No 120 to 150 emery paper, ' Using a drum racer, finish brake drum by machining if it shows any sign of score marks, partial wear or stepped wear on its contact surface After brake drum has been completely re- conditioned or replaced, check drum and shoes for proper contact pattern. , 1 HMMINN (an