TM-55-4920-201-14

• BALANCING AND ADAPTER KITS (MARVEL)
• SAFETY PRECAUTIONS
• Operator's, Organizational, DS, and GS Maintenance Manual Including Repair Parts and Special Tools List
• BALANCING AND ADAPTER KITS (MARVEL)
• TABLE of CONTENTS
• TABLE OF CONTENTS - Continued
• LIST OF ILLUSTRATIONS
• LIST OF ILLUSTRATIONS - Continued
• Section I. Introduction and Description
• GENERAL INFORMATION.
• Figure 1-1. Part No. 7A050 Balancing Kit Shown with Work Stand and Hoist Structure Erected in Preparation for Use.
• Figure 1-2. Typical Suspension - Fixed Pitch Flange-mounted Propeller Assembly.
• Figure 1-3. Typical Suspension -- Propeller Assembly Having the Shaft Nut Retained in the Hub (a Pitch Positioning Plate is also shown).
• Figure 1-4. Typical Underslung Suspension - Flange-mounted Propeller Assembly Having no Center Hole for Installation of Balancing Arbor Through Propeller Bore
• Figure 1-5. Typical Balance Checking Arrangement - Helicopter Engine Fan Assembly.
• Figure 1-6. Typical Track and Concentricity Checking Arrangement - Helicopter Engine Fan Assembly.
• Figure 1-7. Typical Balance Checking Set-Up - Helicopter Main Rotor Assembly.
• Figure 1-8. Typical Balance Checking Set-up - Two-bladed Helicopter Tail Rotor Assembly.
• Figure 1-9. Typical Balance Checking Set-up - Helicopter Tail Rotor Counterweight Assembly.
• Figure 1-10. Typical Balance Checking Set-up - Four-bladed Helicopter Tail Rotor Assembly
• Figure 1-11. Typical Balance Checking Set-up - Helicopter Rotor Head Assembly.
• Figure 1-12. Typical Balance Checking Set-up - Propeller Spinner Assembly.
• PROPELLER BALANCING KIT
• Adapter Cones and Bushings
• Figure 1-13. 7A050 Kit Components and Assembly.
• Figure 1-14. Propeller Adapter Kit 7A052.
• PROPELLER SPINNER ADAPTER KIT 7A055
• Figure 1-15. Propeller Spinner Balancing Adapter Kit 7A055.
• Tail Rotor Balancing Kit 7HEL051
• Figure 1-16. Tail Rotor Balancing Kit 7HEL051.
• TAIL ROTOR AND FAN BALANCING KIT 7HEL052
• Figure 1-17. Tail Rotor and Fan Balancing Kit 7HEL052.
• SMALL PARTS BALANCING KIT 7HEL053
• Figure 1-18. Small Parts Balancing Kit 7HEL053.
• MAIN ROTOR BALANCING KIT 7HEL054
• FAN TRACK AND CONCENTRICITY CHECKING KIT 7HEL055
• OPTICAL TRAMMELING KIT 7HEL056
• Figure 1-21. Optical Trammeling Kit 7HEL056.
• MAIN ROTOR (MODEL 204) BALANCING ADAPTER KIT 7HEL061.
• Figure 1-23. Tail Rotor Balancing Positioning Kit 7HEL065.
• TAIL ROTOR BALANCE POSITIONING KIT AA 4920-8503
• FIGURE
• MAIN ROTOR HUB (MODEL 540) BALANCING ADAPTER KIT 7HEL066.
• Figure 1-25. Main and Tail Rotor Hub and Blade Assemblies Balancing Adapter Kit 7HEL069.
• MAIN ROTOR BALANCING ADAPTER KIT 7HEL354.
• Figure 1-26. Main Rotor Balancing Kit 7HEL354.
• BALANCING ARBOR PRINCIPLES OF OPERATION.
• Balance Indications
• Figure l-28. Interpretation of Balancer Indications.
• AIR CURRENT PROTECTION.
• Section II. Special Service Tools
• Section III. Preparation for Use, Storage, or Shipment
• Figure 3-1. 7A050 Kit Storage Case Positioned Correctly for Opening.
• Figure 3-2. Opening 7A050 Kit Storage Case.
• Assembly of Work (Stand and Hoist)
• Figure 3-3. Assembly of 7A050 Kit Work Stand and Hoist Structure.
• Figure 3-4. Assembling Stand Table to Bottom Half of Storage Case.
• BALANCING ARBOR PART NO. 2259.
• Figure 3-5. Setting Balancing Arbor Indicator Bushing.
• PROPELLER ADAPTER KIT 7A052.
• Figure 3-6. 7HEL050 Kit Storage and Shipping Case with Front Panel Removed to Expose Sub-kits.
• TAIL ROTOR BALANCING KIT 7HEL051
• OPTICAL  TRAMMELING KIT 7HEL056
• STORAGE OR SHIPMENT.
• Section IV. OPERATION INSTRUCTIONS
• Figure 4-1. Installing and Removing Quick-disconnect Couplings.
• Figure 4-2. Hydraulic Pump Assembly.
• Propeller balancing Applications
• Figure 4-3. Typical Method of Aligning Proper Sensitivity Setting.
• HAMILTON STANDARD PROPELLERS
• Figure 4-5. Typical Balancer Installation - Propeller Assemblies witb Cylinders and Counterweights.
• Model 23D40, with Dome Assembly.
• Figure 4-6. Typical Balancer Installation - Double-cone Propeller Assemblies -- Shaft Nut and Front Cone Removed but Dome Assemblies Installed.
• Model 53C51 with Dome Assembly
• HARTZELL PROPELLERS.
• Figure 4-7. Typical Use of Wedges to Load Propeller Blade Bearings Radially Outward.
• Figure 4-8. Typical Balancer Installation -- Flange-mounted Propeller Assemblies Having no Center Hole for Installation of Balancing Arbor through Hub.
• Key to figure 4-8
• HARTZELL PROPELLERS. (cont)
• Balancing Hartzell Flange-mounted Turbo.
• Balancing Hartzell Flange-mounted Turbo. (cont)
• Figure 4-11. Balancing Hartzell Flange-mounted Turbo Propellers - Reversing Type (HC-B3TN-3).
• MC CAULEY PROPELLERS.
• SESENICH PROPELLERS.
• Figure 4-14. Balancer Installation - OH-13 and TH-I3 Helicopter Engine Fan Assembly.
• Figure 4-15. Setup for OH-13 and TH-13 Helicopter Engine Fan Assembly Track and Concentricity Check.
• OH-13 and TH-13 Tail Rotor Hub and Blade Assembly Balance Check
• Figure 4-16, Blancer Installation - OH-13 (Series E, G; Serial H through Series No. 57-6244) Helicopter Tail Rotor Hub and Blade Assembly.
• OH-13 (Series H, Serial NO. 58-1497 and Subsequent and Series S) Tail Rotor Hub and Blade Assembly Balance Check
• Figure 4-17. Balancer Installation - OH-13 (Series H, Serial No. 58-1497 and Subsequent) Helicopter Tail Rotor Hub and Blade Assembly.
• OH-13 and TH-13 Main Rotor Hub and Blade Assembly Balance Check
• Figure 4-17A. Balancer Installation - OH-13 Series S and TH-13T Helicopter Tail Rotor Hub and Blade Assembly
• UH-1 Helicopter.
• Figure 4-19. Balancer Installation - UH-1 (Series A, B, D, F, H, & N Typical) Helicopter Main Rotor Hub Assemblies (Except 540 Series Hub).
• UH-1C, UH-1E, UH-1L, UH-1M, AH-1J, TH-1L, TH-1G, and AH-1G Main Rotor Hub Assembly (540 Series Hub) Balance Check
• UH-1C, UH-1E, UH-1L, UH-1M, AH-1J, TH-1L, TH-1G, and AH-1G Main Rotor Hub Assembly (540 Series Hub) Balance Check (cont)
• Figure 4-20. Balancer Installation - UH-1C, UH-1E, UH-1L, UH-1M, AH-1J, TH-1G, TH-1L and AH-1G Helicopter Main Rotor Hub Assembly (540 Series Hub)
• UH-1, (Series UH-1C, UH-1H, UH-1M, UH- 1L, AH-1J, TH-1G, TH-1L and AH-1G Typical), Tail Rotor Hub and Blade Assemblies
• Figure 4-21. Balancer Installation - UH-1 (Series A, B, C, D, E end F and AH-1G Typical) UH-1H, M, L and AH-1J, TH-1J, and TH-1L Tail Rotor Hub and Blade Assemblies
• OH-58 Series Main Rotor Hub and Blade Assemblies Balance Check
• OH-58 Series Main Rotor Hub and Blade Assemblies Balance Check (Cont)
• Figure 4-23. Balancer Installation - OH-58 Series Main Rotor Hub and Blade Assemblies (Typical).
• OH-58 Series Tail Rotor Hub and Blade Assemblies Balance Check
• Figure 4-24. Balancer Installation - OH-58 Series Tail Rotor Hub and Blade Assemblies (Typical)
• FAIRCHILD HILLER HELICOPTERS.
• Figure 4-25. Balancer Installation - OH-23 Helicopter Engine Fan Assembly.
• OH-23 Engine Fan Assemblies Track and Concentricity Check
• Figure 4-26. Setup for OH-23 Helicopter Engine Fan Assembly Track and Concentricity Check.
• OH.23 (Prior to Series D) Tail Rotor Complete Assembly Balance Check
• OH-23 (Series D, F, and, G) Tail Rotor Hub and Yoke Assembly Balance Check.
• Figure 4-28. Balancer Installation - OH-23 (Series D, F and G) Helicopter Tail Rotor Hub and Yoke Assembly.
• OH-23 (Series D, F, And G) Tail Rotor Complete Assembly Balance Check
• Figure 4-29. Balancer Installation - OH-23 (Series D, F, and G) Helicopter Tail Rotor Complete Assembly.
• OH-23 Main Rotor Head and Control Rotor Assembly Balance Check
• SIKORSKY HELICOPTERS
• UH-19 (Series C) Engine Fan Assembly Balance Check
• Figure 4-32. Setup for UH-19 Helicopter Engine Fan Assembly Track and Concentricity Check
• Figure 4-33. Balancer Installation - UH-19 Helicopter Tail Rotor Hub and Blade Assembly - 105-inch-diameter Configuration with Movable Counterweights.
• CH-34 Helicopter.
• CH-34 Engine Fan Assembly Track and Concentricity Check.
• CH-34 Tail Rotor Counterweight Assembly Balance Check
• Figure 4-36. Balancer Installation - CH-34 Helicopter Tail Rotor Counterweight Assembly
• Figure 4-37. Balancer Installation - CH-34 Helicopter Tail Rotor Hub and Blade Assembly
• CH-3 7 Helicopter.
• Optical Trammeling
• Figure 4-38. Setup for Optical Trammeling of CH-37 Helicopter Tail Rotor Assembly (Sheet 1 of 2).
• Figure 4-38. Setup for Optical Trammeling of CH-37 Helicopter Tail Rotor Assembly (Sheet 2 of 2).
• CH-37 Tail Rotor Assembly Balance Check.
• Figure 4-39. Balancer Installation - CH-37 Helicopter Tail Rotor Assembly.
• Figure 4-40. Balancer Installation - CH-47 Helicopter Rotor Head Assembly.
• Section V. Periodic Inspection, Maintenance, and Lubrication
• Adapter, Yoke and Fixture Assemblies
• Dial Indicator (7HEl055 Kit)
• LUBRICATION.
• Figure 5-1. Adding Damping Oil to Balancing Arbor.
• Refilling Hydraulic Pump Reservoir.
• Figure 5-2. Checking Fluid Level in Reservoir of Hydraulic Pump Assembly.
• Section VI. TROUBLESHOOTING
• Section VII. SENSITIVITY ADJUSTMENT
• Figure 7-1. Balance Versus Unbalance Condition.
• EFFECT OF VERTICAL HEIGHT SETTING  ON  SENSITIVITY  OF  UNBALANCE INDICATION
• Figure 7-2. Effect of Sensitivity Setting on Balance Indications.
• DETERMINATION OF CORRECT SENSITIVITY
• Appendix A. REFERENCES
• Table A-1. Reference Technical Manuals - Propeller Manuals
• Table A-2. Reference Technical Manuals - Helicopter Manuals
• Appendix B. Maintenance Allocation Chart
• DEVIATIONS.
• MAINTENANCE ALLOCATION CHART FOR KITS, STATIC BALANCING
• Appendix C. REPAIR PARTS AND SPECIAL TOOLS LIST
• Maintenance code
• SPECIAL INFORMATION.
• HOW TO LOCATE REPAIR PARTS.
• Repair Parts List
• Repair Parts List (cont)
• Repair Parts List (cont)
• Section IX. FEDERAL STOCK NUMBER AND REFERENCE NUMBER INDEX
• Section IX. FEDERAL STOCK NUMBER AND REFERENCE NUMBER INDEX (cont)
• Section IX. FEDERAL STOCK NUMBER AND REFERENCE NUMBER INDEX (cont)
• Section IX. FEDERAL STOCK NUMBER AND REFERENCE NUMBER INDEX (cont)
• Blank Page
• Blank Page
• Blank Page
• TM-55-4920-201-14
• Blank Page
• Blank Page
• Blank Page
• Blank Page
• Blank Page
• Blank Page
• Blank Page
• Blank Page
• Blank Page
• Blank Page
• Blank Page
• Blank Page
• DISTRIBUTION

Privacy Statement - Press Release - Copyright Information. - Contact Us