Figure 3-2. Oil Level Gage and Filler

Figure 3-1. Lubrication Order (Sheet 2 of 2)

TM-5-6115-545-12 Power Unit Utility Pack Gas Turbine Engine Driven (Air Research Model PPU85-5) Non-Winterized and (Air Research Model PPU85-4) Winterized Manual
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TM 5-6115-545-12 TO 35C2-3-444-1 NAVFAC P-8-626-12 TM 00038G-12 Figure 3-2. remove breather tubes (2, 6 & 8, fig. 3-12.1) from the valve cover, crankcase, oil separator and air intake system. Clean inside of tubes with cleaning solvent, blow out with compressed air, and replace on engine and oil separator. b. Cleaning. Keep all external parts not requiring lubrication clean of lubricants. Before lubricating equipment, wipe all lubrication points free of dirt and grease. Clean all lubrication points after lubrication to prevent accumulation of foreign matter. c. Oil Level. CAUTION To prevent overfill of the oil sump, remove oil filler cap when checking oil with set running. (1) Crankcase oil level must be checked frequently. (2) Oil may require changing more frequently than usual because of contamination by dilution and because sludge formation will increase under cold weather operation conditions. (3) Before draining the oil system, operate the engine until a minimum coolant temperature of 160° F is obtained. Shut engine off, open the engine oil drain valve and remove the oil drain plug from the skid and allow the oil to drain into appropriate container. Refer to para 3-4 d. for oil filter service. Oil Level Gage and Filler (4) Install the drain plug, close the oil drain valve and fill the crankcase with 26 quarts of the specified grade of lubricant to the FULL mark on the oil level gage. Use the side of the oil level gage stamped STOPPED. (5) Place dead crank switch (49, fig. 3-27) in the off (down) position and crank engine for 15 seconds, then place dead crank switch in on (up) position. (6) Start and operate the engine for approximately 5 minutes. (7) Stop the engine and allow several minutes for the oil to drain back to the crankcase before checking the oil level. (8) Using the oil level gage, (fig. 3-2) check the oil level and add oil as necessary to raise the level even with the FULL mark on the oil level gage. (9) Observe the engine for oil leakage. Repair oil leaks before continuing operation. d. Oil Filter Service See figure 3-3 and service the oil filters as follows: CAUTION Disconnect negative lead from battery prior to servicing oil falter. (1) Drain oil filter by removing plug (l). Drain oil into appropriate container. 3-4 Change 18

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