TM-55-1905-220-14-3 Landing Craft Unit LCU 1671-1679 (<a href="http://combatboats.tpub.com/01-009-1056.htm">1905-01-009-1056</a>) Manual

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TM-55-1905-220-14-3

TECHNICAL MANUAL OPERATOR'S ORGANIZATIONAL, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL
LANDING CRAFT UTILITY
LANDING CRAFT UTILITY
WARNING
WARNING cont'd
WARNING cont'd
WARNING cont'd
TABLE OF CONTENTS
LIST OF TABLES
LIST OF TABLES cont'd
LIST OF TABLES cont'd
LIST OF TABLES cont'd
CHAPTER 3 OPERATOR MAINTENANCE INSTRUCTIONS
Inspection
Servicing and Equipment
Engine
SECTION IV. TROUBLESHOOTING SYMPTOM INDEX
SYMPTOM INDEX
ANCHOR WINCH ENGINE
ANCHOR WINCH ENGINE cont'd
BOW RAMP WINCH
HYDROSTARTER
HEADING SELECTOR
MARINE GEAR
HYDROSTARTER
24 VDC RECTIFIER
STEERING CONTROL PANEL
Table 3-1. Propulsion Engine Exhaust Smoke Analysis Troubleshooting
Black or grey smoke observed (Cont).
Black or grey smoke observed (Cont).
Black or grey smoke observed (Cont).
Black or gray smoke caused by excessive fuel or irregular fuel distribution
Black or gray smoke caused by improper grade of fuel
White Smoke
Low cranking speed
No fuel (Cont)
Low compression (Cont)
Low compression (Cont)
Low compression (Cont)
Uneven running or frequent stalling (Cont)
Table 3-3. Propulsion Engine - Abnormal Engine Operation Troubleshooting cont'd
Uneven running or frequent stalling (Cont)
Lack of power
Lack of power (Cont)
Lack of power (Cont)
Lack of power (Cont)
Lack of power (Cont)
Detonation
Detonation (Cont)
Table 3-4. Propulsion Engine - No Fuel or Insufficient Fuel Troubleshooting
Figure 3-1. Fuel System Piping
Air leaks (Cont)
Faulty fuel pump
Faulty installation
Faulty installation (Cont)
Table 3-5. Propulsion Engine - High Lubricating Oil Consumption Troubleshooting
External leaks (Cont
Internal leaks (Cont).
Table 3-6. Propulsion Engine - Excessive Crankcase Pressure Troubleshooting
Breather restriction
Excessive exhaust back pressure
Table 3-7. Propulsion Engine - Low Oil Pressure Troubleshooting
Poor circulation (Cont)
Oil pump (Cont)
Table 3-8. Propulsion Engine - Abnormal Engine Coolant Operating Temperature Troubleshooting
Temperature below normal
Low exhaust valve opening pressure (Cont
Low oil pressure
Low oil pressure
Overheating (Cont)
Harsh engagement
Engine driven pump fails to raise pressure
MAIN PROPULSION ENGINE CONNECTIONS
Table 3-11. Hydrostarter - Low or No Accumulator Pressure Troubleshooting (Cont).
Engine driven pump fails to raise pressure (Cont)
Engine driven pump fails to raise pressure (Cont) Step 3. Check for plugged screen or filter
Table 3-12. Hydrostarter - Cranking Speed Too Low Troubleshooting.
Loss of fluid from reservoir
Loss of fluid pressure when engine is not running (Cont)
Table 3-15. Hydrostarter - Hand Pump Fails to Discharge Fluid Troubleshooting.
Hand pump fails to discharge fluid (Cont)
Table 3-16. Hydrostarter - Starter Turns but Engine Does Not.
Loss of accumulator precharge (nitrogen) (Cont)
Table 3-17. Hydrostarter - Loss of Accumulator Precharge (Nitrogen) Troubleshooting (Cont).
Table 3-19. Hydrostarter - Fluid Emerges from the Reservoir Filler Cap When is Used - Troubleshooting
Table 3-21. Hydrostarter - Cranking Cycle Too Short Troubleshooting.
Table 3-22. Generator Engine - Exhaust Smoke Analysis Troubleshooting.
Black or grey smoke observed (Cont)
Black or grey smoke observed (Cont)
Black or gray smoke caused by -excessive fuel or irregular fuel distribution cont'd
Black or gray smoke caused by excessive fuel or irregular fuel distribution (Cont)
White smoke
Table 3-23. Generator Engine - Hard Starting - Troubleshooting.(Cont).
No fuel (Cont)
Low compression (Cont)
Table 3-24. Generator Engine - Abnormal Engine Operation Troubleshooting.
Uneven running or frequent stalling (Cont)
Uneven running or frequent stalling (Cont)
Lack of power
Lack of power (Cont)
Lack of power (Cont)
Lack of power (Cont)
Lack of power (Cont)
Detonation
Detonation (Cont)
Detonation (Cont)
Table 3-15. Generator Engine - No Fuel or Insufficient Fuel Trouble shooting
Air leaks (Cont)
Faulty fuel pump
Table 3-15. Generator Engine - No Fuel or Insufficient Fuel Trouble shooting
Faulty installation (Cont)
Table 3-26. Generator Engine - High Lubricating Oil Consumption Troubleshooting
Oil control at cylinder
Table 3-27. Generator Engine - Excessive Crankcase Pressure Troubleshooting
Air from blower or air box
Table 3-28. Generator Engine - Low Oil Pressure - Troubleshooting.
Poor circulation (Cont)
Pressure gage and alarm switch (Cont)
Oil pump (Cont)
Table 3-29. Generator Engine - Abnormal Engine Coolant Operating Temperature Troubleshooting cont'd
Table 3-30. Generator Engine - Low or High Exhaust Valve Opening Pressure Troubleshooting
Main Propulsion Engine Connections
Table 3-31. Hydrostarter - Low or No Accumulator Pressure Troubleshooting
Engine driven pump fails to raise pressure (Cont)
Engine driven pump fails to raise pressure (Cont)
Table 3-32. Hydrostarter - Cranking Speed Too Low Troubleshooting
Table 3-33. Hydrostarter - Loss of Fluid from Reservoir Troubleshooting
Table 3-34. Hydrostarter - Loss of Fluid Pressure When Engine is Not Running - Troubleshooting
Table 3-35. Hydrostarter - Hand Pump Fails to Discharge Fluid Troubleshooting
Hand pump fails to discharge fluid (Cont)
Table 3-36. Hydrostarter - Starter Turns but Engine Does Not Troubleshooting
Table 3-37. Hydrostarter - Loss of Accumulator Precharge (Nitrogen) Troubleshooting cont'd
Table 3-38. Hydrostarter - High Pressure in System
Table 3-40. Hydrostarter - Fluid Emerges Around Rubber Boot of Hand Pump - Troubleshooting
Table 3-41. Hydrostarter - Cranking Cycle Too Short Troubleshooting
Table 3-42. Generator - Troubleshooting
Generator Noisy.
Table 3-43. Switchboard Troubleshooting.
Generator fails to supply power to switchboard, as shown on volt meter: It should read 450 VAC
Table 3-43. Switchboard Troubleshooting (Cont).
Voltmeter reading too high or too low
Generator frequency meter fails to read (Cont)
Shore power not available (Cont)
Ground detector lights
Table 3-44. 24VDC Rectifier Troubleshooting (Cont)
Table 3-45. Bow Ramp Winch Troubleshooting.
Motor does not start (Cont)
Motor runs - shaft does not turn (Cont)
Table 3-46. Bow Ramp Winch Brake Troubleshooting
Table 3-46. Bow Ramp Winch Brake Troubleshooting (Cont)
Table 3-46. Bow Ramp Winch Brake Troubleshooting (Cont)
Table 3-47. Bow Ramp Winch Motor Troubleshooting (Cont).
Noisy (mechanically) (Cont)
Table 3-48. Anchor Winch - Winch Troubleshooting
Drive brake - slipping
Drive gear
Table 3-49. Anchor Winch Slack Puller Troubleshooting
Table 3-49. Anchor Winch Slack Puller Troubleshooting cont'd
Table 3-50. Anchor Winch Disconnect Clutch Troubleshooting.
Table 3-51. Anchor Winch Torque Converter Troubleshooting
Table 3-51. Anchor Winch Torque Converter Troubleshooting cont'd
Loss of fluid from converter
Loss of fluid from converter (Cont)
Loss of fluid from converter (Cont)
Poor performance and overheating of converter
Poor performance and overheating of converter (Cont)
Poor performance and overheating of converter (Cont)
Low output horsepower
Excessive pressure
Table 3-52. Anchor Winch - Hydraulic Tank Balanced
Table 3-53. Anchor Winch - Hydraulic Tank Check Valves Troubleshooting
Table 3-54. Anchor Winch - Hydraulic Tank Pressure Control Valves Troubleshooting
Excessive noise or chatter (Cont)
Erratic Pressure (Cont)
Table 3-56. Anchor Winch Hydraulic Tank Directional Control Valve Troubleshooting
Table 3-57. Anchor Winch Hydraulic Tank Troubleshooting
Poor performance (Cont)
Table 3-58. Anchor Winch Hydraulic Pump Troubleshooting
Table 3-59. Anchor Winch Engine Exhaust Smoke
Black or gray smoke (Cont)
Table 3-59. Anchor Winch Engine Exhaust Smoke Analysis Troubleshooting
Black or grey smoke (Cont).
Table 3-59. Anchor Winch Engine Exhaust Smoke Analysis Troubleshooting cont'd
Black or gray smoke caused by excessive fuel or irregular fuel distribution (Cont)
Table 3-60. Anchor Winch Engine - Hard Starting Troubleshooting
Table 3-60. Anchor Winch Engine - Hard Starting Troubleshooting cont'd
Low compression
Low compression (Cont)
Table 3-61. Anchor Winch Engine Abnormal Engine Operation Troubleshooting
Uneven running or frequent stalling (Cont)
Uneven running or frequent stalling (Cont)
Lack of power
Lack of power (Cont)
Lack of power (Cont)
Lack of power (Cont)
Lack of power (Cont)
Detonation
Detonation (Cont)
Table 3-62. Anchor Winch Engine No Fuel or Insufficient Fuel Troubleshooting
Air leaks (Cont)
Faulty fuel pump
Faulty installation (Cont)
Faulty installation (Cont)
Table 3-63. Anchor Winch Engine High Lubricating Oil Consumption Troubleshooting
Internal leaks (Cont)
Table 3-64. Anchor Winch Engine Excessive Crankcase Pressure Troubleshooting
Breather restriction
Air from blower or air box
Table 3-65. Anchor Winch Engine - Low Oil Pressure - Troubleshooting
Poor circulation
Poor circulation (Cont)
Oil pump
Table 3-66. Anchor Winch Engine Abnormal Engine Coolant Operating Temperature Troubleshooting
Temperature below normal
Table 3-67. Anchor Winch Engine Low or High Exhaust Valve Opening Pressure Troubleshooting
Table 3-68. Anchor Winch Engine Low or No Accumulator Pressure Troubleshooting
Table 3-68. Anchor Winch Engine Low or No Accumulator Pressure Troubleshooting
Engine driven pump fails to raise pressure (Cont)
Engine driven pump fails to raise pressure (Cont)
Cranking speed to low
Table 3-70. Anchor Winch Engine - Hydrostarter Loss of Fluid from Reservoir Troubleshooting
Table 3-71. Anchor Winch Engine - Hydrostarter Loss of Fluid Pressure When Engine is Not Running Troubleshooting (Cont)
Hand pump fails to discharge fluid
Hand pump fails to discharge fluid (Cont)
Starter turns but engine does not
Table 3-74. Anchor Winch Engine - Hydrostarter Loss of Accumulator Precharge (Nitrogen) Troubleshooting (Cont).
Table 3-75. Anchor Winch Engine - Hydrostarter High Pressure in System (3500 psi or above) Troubleshooting
Table 3-77. Anchor Winch Engine - Hydrostarter Fluid Emerges Around Rubber Boot of Hand Pump - Troubleshooting
Table 3-78. Hydrostarter - Cranking Cycle Too Short - Troubleshooting cont'd
Table 3-79. Centralized Hydraulic System - Hydraulic Powre Unit Troubleshooting cont'd
Table 3-79. Centralized Hydraulic System - Hydraulic Powre Unit Troubleshooting cont'd
Table 3-79. Centralized Hydraulic System - Hydraulic Powre Unit Troubleshooting cont'd
Table 3-80. Centralized Hydraulic System Controller Troubleshooting cont'd
Inoperative
Table 3-81. Stern Gate Hydraulic System - Troubleshooting.
Table 3-82. Mast Hydraulic System - Troubleshooting (Cont)
Sluggish operation
Table 3-83. "A" Frame Hydraulic Winch Troubleshooting
Inoperative (Cont)
Sluggish operation (Cont)
Table 3-84. Steering Controller - Troubleshooting
Hydraulic pump inoperative (Cont)
Table 3-85. Steering Cub Hydraulic Pump - Troubleshooting
Steering System inoperative (Cont)
Pump making noise (Cont)
Table 3-86. Steering System - Hydraulic Directional Control Valve Troubleshooting
Table 3-87. Hydraulic Steering Cylinder and Adjustable Links Troubleshooting
Table 3-88. Rudder Angle Indicator and Repeatback Transmitter Troubleshooting.
Table 3-89. Heading Selector Troubleshooting
Table 3-90. Steering Control Panel Troubleshooting
Inoperative - POWER AVAIL lamps not lit (Cont).
Table 3-90. Steering Control Panel Troubleshooting (Cont)
Table 3-91. Remote Magnetic Heading System Troubleshooting (Cont)
Table 3-92. Ship's Course Indicator Troubleshooting
Table 3-92. Ship's Course Indicator Troubleshooting (Cont)
Dial of two-speed indicator moves alternately fast and slow, may lock occasionally
INDEX
INDEX cont'd
INDEX cont'd
INDEX cont'd
The Metric System and Equivalents
Blank page
Distribution
TM-55-1905-220-14-3
Recommended Changes to Equipment Technical Publications