TEMPORARY REVISION - MD Helicopters

More documents

Recommendations

Info

CSP−H−2MD Helicopters, Inc.500 Series − Basic HMItransmission cover panel. Otherwise,reinstall, in order, the main transmissioncover, the drain assembly, the maingearbox access cover and the soundinstallation.NOTE: If equipped with a metal filter, the maintransmission filter should be cleanedwhenever the oil is drained. If equipped with a paper filter, the maintransmission filter should be replacedwhenever the oil is drained.I. Main Rotor Transmission Oil SystemFlushingThe following procedure is for flushing oil thatas been contaminated or when changing thetype of oil.(1). Drain oil from transmission and oilcooler (Ref. Main Rotor TransmissionDraining).(2). If equipped with a metal filter, cleanthe transmission oil filter (Ref. TransmissionLubrication Pump Oil FilterCleaning). If equipped with a paperfilter, replace the filter.(3). Refill transmission oil system (Ref.Main Rotor Transmission and TailRotor Transmission Filling).(4). Operate aircraft for five minutes, shutdown and repeat steps (1). thru (3).J. Tail Rotor Transmission Draining(1). Position suitable container under thetail rotor transmission drain.(2). Remove wire lead, lockwire, chipdetector and self−closing valve(3). If damaged, replace packings used withchip detector and self−closing valve.(4). After oil has drained install self−closingvalve and chip detector. Lockwire valveto gearbox and detector to valve.Reconnect wire lead.(5). Wipe dry any oil spillage with a cleancloth moistened with solvent (1,Table 2−4).K. Tail Rotor Transmission Oil SystemFlushingThe following procedure is for flushing oil thatas been contaminated or when changing thetype of oil.(1). Drain oil from tail rotor transmission(Ref. Tail Rotor Transmission Draining).(2). Refill tail rotor transmission (Ref. MainRotor Transmission and Tail RotorTransmission Filling).(3). Operate aircraft for five minutes, shutdown and repeat steps (1). and (2).L. One−Way Lock Control system Servicing(1). To check oil level, remove control accesscover.NOTE: Reservoir should be 1/2 to 3/4 full.(2). If oil level in reservoir is low, lift fillercap and add oil as needed.(3). Reinstall pilot’s seat cover.NOTE: If oil level is consistently low, one−waylock should be repaired to stop oil leakage(Ref. Component Overhaul Manual). Hydraulic fluid leakage from any part ofone−way lock is not permissible. Whenleakage is observed, assembly should beoverhauled (Ref. Component OverhaulManual) as required and a serviceableunit installed. If leaking one−way lock isnot replaced when leakage occurs, continuationin service may result in mechanicalmalfunction that could be hazardousto flight safety.Page 2−16TR09−001
MD Helicopters, Inc.500 Series − Basic HMICSP−H−2ItemNo.Table 2−3. Component Servicing and MaterialsComponent Capacity Material1 Tail Rotor Transmission (1)(2)(5) 0.5 U.S. Pt. (0.23 Liter) MIL−L(PRF)−23699 (3)Mobil Oil SHC 626 (3)(6)2 Main Transmission 4 U.S. Qt (3.78 L) Refer to Item 13 Engine Oil Tank (4) 3 U.S. Qt (1.32 L) Refer to Allison EngineOperation and MaintenanceManual4 Fuel Cells5 Standard nonself−sealing cells Capacity 64.0 U.S. Gal. (242 Liters)(416.0 pounds)6 Usable 62.1 U.S. Gal. (235 Liters)(403.5 pounds)7 Optional self−sealing cells Capacity 62.0 U. S. Gal. (234 Liters)(402.0 pounds)8 Usable 59.9 U.S. Gal. (226.8 Liters)(389.5 pounds)Refer to AppropriatePilot’s Flight ManualRefer to AppropriatePilot’s Flight ManualRefer to AppropriatePilot’s Flight ManualRefer to AppropriatePilot’s Flight Manual9 Overrunning Clutch −11, −21, −31 1.52 U.S. Oz. (45cc) MIL−L (PRF)−23699 (3)10 −41, −51 1.01 U.S. Oz. (30cc)11 One−Way Lock 0.67 U.S. Oz. (20 cc) MIL−H−560612 Battery (Nicad) As required MS36300 or 0−B−41Distilled WaterNOTES:(1) Oils approved for use in MDHI 369 Series Helicopter main and tail rotor transmissions are syntheticcompounds having Ryder Gear Value in excess of 2500 pounds.(2) Not a preferred lubricant for MDHI transmissions. Use MIL−L−7808 lubricating oil in transmissions onlywhen other oils listed are not available.(3) Approved for use above −40°F (−40°C).(4) For Model 250 Series engine oil change requirements and restrictions on mixing oils, refer to AllisonCommercial Service Letters.CAUTION: Mixing of oils within an oil series not in the same group is permitted only in an emergency. Useof mixed oils (oils not in the same group) in an engine is limited to five hours total running time. Adequatemaintenance records must be maintained to ensure that the five hour limit is not exceeded. Mixing of oilsfrom different series is not permitted.(5) Listed is the basic Military Specification only. Check the specification sheet for the latest alpha changeletter to determine whether the materials being used conform.(6) Mobil oil SHC 626 can be formulated such that it may have two different colors. The oil can still be mixedwith no adverse effects.Page 2−17TR09−001
Page 6: CSP−H−2MD Helicopters, Inc.500
Page 9 and 10: MD Helicopters, Inc.500 Series −
Page 14 and 15: CSP−H−2MD Helicopters, Inc.500
Page 28 and 29: CSP−H−2ItemNo.Material11 Paint
Page 30 and 31: CSP−H−2ItemMaterialNo.31 Insula
Page 72 and 73:
CSP−H−2MD Helicopters, Inc.500
Page 74 and 75:
Page 76 and 77:
Page 78 and 79:
Page 80 and 81:
Page 82 and 83:
Page 84 and 85:
Page 86 and 87:
Page 88 and 89:
Page 90:
show all

TEMPORARY REVISION - MD Helicopters

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?