AIR COMPRESSOR - MIDLAND BRAKE MODELS EL-1300, EL-1600 SPECIFICATIONS Type 2-Cylinder Capacity (at 1250 RPM) EL-1300 .36 m³/min. 12.9 cu.  ft./minute EL-1600 .46 m³/min. 16.1 cu.  ft./minute Air Pressure Setting Cut Out 861.75 kPa (125 psi) Approx. Cut In 710.0-744.5 kPa (103-108 psi) Cylinder Bore 68.840-69.850mm (2.7495-2.7500 in.) Piston and Connecting Rod Components: Piston Diameter Below Compression Rings 69.70-69.72mm (2.744-2.745 in.) Piston Pin Hole 14.26-14.27mm (.5615-.5618 in.) Rod Pin Diameter 14.27-14.28mm (.5618-.5620 in.) Connecting Rod Pin Hole 14.28-14.29mm (.5622-.5624 in.) Piston Rings: Compression Ring Gap .051-.178mm (.002-.007 in.) Oil Ring Gap .381-1.40mm (.015-.055 in.) Groove Clearance: Compression Ring .0381-.114mm (.0015-.0045 in.) Oil Rings .012-.114mm (.0005-.0045 in.) Cylinder Head Components Exhaust Valve Seat Valve Guide Diameter 29.08-29.24mm (1.145-1.151 in.) Top of Valve Seat to Seating Surface on Exhaust Valve 3.18-3.25mm (.125-.128 in.) Inlet Valve Spring Load @ 7.29mm (.287") 1.60-2.76 N•m (.36-.62 lb.) Unloader Spring Load @ 10.03mm (.395") 15.03-18.59 N•m (3.38-4.18 lb.) Exhaust Valve Spring Load @ 18.54mm (.73") 14.68-16.46 N•m (3.30-3.70 lb.) Exhaust Valve Stop Surface to Spring Seat Surface 18.29-18.80mm (.72-.74 in.) Inlet Valve Cage: Valve Guide Diameter 23.266-23.368mm (.916-.920 in.) Top of Cage to Valve Stop 3.33-3.51mm (.131-.137 in.) Inlet Valve Seat: Valve Seating Surface-to-Valve Cage Control Surface 0.596-0.673mm (.0235-.0265 in.) Unloader Pin Length 47.0-47.04mm (1.850-1.854 in.) Crankcase, Crankshaft and Bearing Cap Crankcase Bearing Bore 71.9938-72.0090mm (2.8344-2.8350 in.) 89.9973-90.0176mm (3.5432-3.5440 in.) Main Bearing (Sleeve Type) 55.0697-55.1078mm (2.1681-2.1696 in.) Ball Bearing: Outside Diameter 71.9861-71.9988mm (2.8341-2.8346 in.) Inside Diameter 35.0012-34.9885mm (1.3780-1.3775 in.) Outside Diameter 89.9998-89.9846mm (3.5433-3.5427 in.) Inside Diameter 53.9859-55.0012mm (2.1648-2.1654 in.) Crankshaft: Connecting Rod Journal Diameter 47.11-47.0mm (1.855-1.850 in.) Connecting Rod Journal Width 32.15-34.72mm (1.265-1.367 in.) Connecting Rod Bearing Clearance 0.012-0.053mm (.0005-.0021 in.) Connecting Rod Side Clearance 0.25mm (.010 in.) Main Bearing Journal Diameter 35.0114-34.9987mm (1.3784-1.3779 in.) 55.0139-54.9986mm (2.1659-2.1653 in.) Bearing Cap Seal Diameter 16.13-16.15mm (.635-.636 in.) Seal Outside Diameter 16.08-16.05mm (.633-.632 in.) CTS-4077Y Page 13