4. LUBRICATION SYSTEM DINK 50/125 Outer Rotor Inner Rotor Measure the inner rotor-to-outer rotor clearance. Service Limit: 0.2 mm (0.008 in) Measure the rotor end-to-pump body clearance. Service Limit: 0.12 mm (0.0048 in) Pump Body Rotor End ASSEMBLY Dowel Pin Pump Body Install the outer rotor, inner rotor and pump shaft into the pump body. Insert the pump shaft by aligning the flat on the shaft with the flat in the inner rotor. Install the dowel pin. There is one punch mark on the surface of the inner rotor and outer rotor. Outer Rotor Inner Rotor Pump Shaft The mark is upside. 4-7