Figure 4-49. Acceleration Control Thermostat and Plenum Drain Value (TS 6115-590-12/4-49)

Figure 4-48. Lubrication System Component Replacement (TS 6115-59012/4-48)

Figure 4-50. Fuel Combustion Chamber Component Replacement. (TS 6115-590-12 4-50)

TM-5-6115-590-12 Generator Set Engine Driven Tactical Skid Mtd 10 Kw 1 Phase - 2 Wire 1 Phase - 3 Wire 3 Phase - 4 Wire Manual
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TM 5-6115-590-12 Figure 4-49. Acceleration Control Thermostat and Plenum Drain Value (TS 6115-590-12/4-49) 4-90. Fuel Combustion Chamber a. Removal. (1) Remove tube assembly (fig. 4-50) from fuel atomizer and electrical lead from igniter plug. WARNING Do not remove igniter plug until it has been grounded. The high tension lead must be grounded as soon as it is removed from the igniter plug. Ground by touching the contact spring in the lead to the igniter. (2) Loosen screw in coupling and remove combustion chamber liner, coupling, combustor cap assembly and fuel atomizer assembly from turbine plenum. (3) Slide coupling over end of combustion liner and remove from engine. (4) Remove igniter plug by removing attaching bolts and washers. (5) Remove three attaching bolts and washers from fuel atomizer. Remove fuel atomizer and packing from combustor cap. (6) Remove liner and packing from combustor cap. b. Cleaning and Inspection. (1) Wash all parts except igniter plug in approved cleaning solvent and dry thoroughly with filtered compressed air. If necessary, remove carbon deposits from atomizer nozzle using a soft bristled fiber brush while directing filtered compressed air at approximately 20 psig pressure into atomizer fuel inlet port. Do not use a wire brush. Clean excessive carbon deposits from liner with a wooden scraper or equivalent. (2) Inspect all metallic parts for cracks, corrosion, damaged threads or other obvious damage. Inspect fuel atomizer screen for clogging and breaks. Inspect liner assembly for cracks and deformation in accordance with figure 4-51. c. Installation. (1) Install satisfactory or replacement liner assembly into combustor cap being careful that the igniter plug hole in the liner matches up with hole in the combustor cap. (2) Install satisfactory or replacement fuel atomizer assembly with new packing on combustor cap and secure with three attaching washers and bolts. Tighten bolts to 20 to 25 inch-pound torque. (3) Install igniter plug and secure with attaching washers and bolts. (4) Slide coupling over end of liner and on to combustor cap. Install cap with liner turbine plenum using new packing. Tighten clamp securely. (5) Reconnect tube assembly to fuel atomizer using new packing and connect electrical lead to igniter plug. 4-91. Upper and Lower Plenums and Heat Shields Inspect upper and lower plenums and heat shields for dents, cracks, corrosion, loose or missing mount- ing hardware or other obvious damage. 4-106

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