TM 5-4310-393-14 h. Safety Relief Valves.  Each compression stage is protected by a safety relief valve. i. Instruments  and  Gauges.    Instruments  and  gauges  consist  of  hourmeters  to  record  time  of  operation  and gauges  for  pressure  indication.    An  hourmeter  is  mounted  on  the  gauge  panel  of  each  frame.    A  pressure  gauge  is  also installed at the discharge end of the delivery hose. CAUTION THE  DIESEL  ENGINE  AND  COMPRESSOR  ARE  BUILT  TO  METRIC  STANDARD MEASUREMENT. THE FRAME AND MOUNTING EQUIPMENT ARE MANUFACTURED  USING  ENGLISH  STANDARD  SIZES.    DO  NOT  USE  IMPROPER TOOL SIZES FOR MAINTENANCE OR REPAIRS.  USE THE RIGHT TOOL FOR THE JOB. 1-9.  EQUIPMENT DATA. The equipment data for the model CAPITANO-PD and its components are listed in Table 1-1. Table 1-1.  Equipment Data/Characteristics Engine Manufacturer Hatz Diesel Co. Model E673 LHK Type Four-stroke air-cooled diesel Horsepower 6 @ 3600 rpm Number of cylinders 1 Bore 2.8740 in (73.0 mm) Stroke 2.6378 in (67.0 mm) Compression ratio (nominal) 19 to 1 Total displacement 17 4 cu in (280 cc) Direction of rotation (facing throttle control) Clockwise Cooling air required 180 cfm (5 cu m/min) Injection pressure 1920 psi (133 bar) Tappet clearance (cold engine) Compression tappet 0 004 in (0 10 mm) Decompression tappe t0.10 in (1.0 mm) Engine Accessories Air cleaner Oil bath Fuel Tank (capacity) 2.38 gal (9.0 I) Crankcase (capacity) 1.1 qt (1 I) Compressor Manufacturer Bauer Compressors, Inc. Model CAPITANO-PD Number of cylinders 3 Working process 3 stage Cylinder bore 2.76, 1.42, 0.58 in (70 / 36 14 mm) Piston stroke 1.57 in (40 mm) Compressor speed 1300 rpm Intermediate pressure 56 / 500 / 3200 psi (4 / 35 /221 bar) Oil pressure (nominal) 850 psi (60 bar) Free air delivery 5 0 cfm (140 Ipm) Power required 6 hp (4 5 kw) Oil capacity 1 5 qt (1.42 1) 1-4