COMPRESSOR LUBRICATION

TM-5-3895-374-24-1 Paving Machine Bituminous Material: Crawler Mounted Diesel Engine Driven Manual
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TM 5-3895-374-24-1 COMPRESSOR LUBRICATION OIL LEVEL Always operate the unit in a level position Prior to start-up, check the sight glass to ensure that the oil In the compressor pump Is at the required level. The oil level should reach 1/8" above the red line on the sight glass (see Fig 7). If the oil level is below the red line, remove the oil fill plug and pour oil through the oil filler opening until the sight glass shows the correct level. Do not overfill or underfill, too much or too little oil will harm the compressor. CAUTION: The oil level In the pump crankcase must be checked daily. BREAK-IN PERIOD The compressor pump Is shipped with break-in oil which should be changed after the first 8 hours of operation. Drain the oil from the crankcase by removing the cap (see Fig 7). Additional oil changes should be done at the Intervals specified below. OIL TYPE The correct lubricant is essential to the proper operation of your 2-stage cast Iron compressor. One of two types of oil should be used, depending on whether the compressor is operated under a normal load, or under a light load. Compressor oil meeting the following specifications should be available from a local industrial lubricant supplier. CAUTION: Motor oils are not suitable for compressor use. Figure 7. Checking Oil Level NORMALLY LOADED COMPRESSORS (Compressors in typical installations) Oil Type: When the compressor is operated under a normal load, the durability of the oil at high temperatures is extremely important. Use only SLC1 (Part No. 018- 0051SP) or PGS iii (Part No 018-0053SP) compressor oil or a premium reciprocating compressor oil made from highly refined base stocks and meeting the following specifications: Minimum Flash Point.........................249-C (480-F) Maximum Pour Point ............................. -6 7C (20F) Minimum Viscosity at 40C .................................................... 100cSt at 1 00C .................................................11 3 cSt at 100°F ................................................525 SUS at 2100F..................................................65 SUS Minimum Viscosity index .......................................95 Rust Protection, ASTM D665 A&B ....................Pass Maximum CCR . ...............................................020% Oil Changes: After the initial break-in period, all additional oil changes should be done at 250 working hour intervals. LIGHTLY LOADED COMPRESSORS (Compressors that run infrequently AND experience condensation) Oil Type: When experiencing condensation, the ability of the oil to separate (demulsify) water is extremely important This allows the water to settle to the bottom of the crankcase Use ISO 100 (30W) or 150 (40W) R & O oil that passes the ASTM D1401 demulsibility test. Two compressor oils meeting these requirements are Sanborn 30W (Part No 018-0018) and Sanborn 40W (Part No 018-0029). Condensation: Water condensing in the crankcase is normal under certain humid conditions and light duty cycling. This water must be removed from the pump to prevent damage Use a demulsifying oil that meets the specifications above, and drain the condensation at least twice a week. After draining the condensation, check the oil level and add oil as necessary. CAUTION: A rise in the oil level and a milky oil color indicate condensation is forming in the crankcase This condensation must be drained immediately, or damage to the pump may occur. Oil Changes: When experiencing condensation/water in the crankcase, a complete oil change should be done at 100 working hour intervals after the initial break-in period. 200-2009 (page 3-636)

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