TM 55-1520-240-T
PARAGRAPH 15-4
TABLE OF CONTENTS
APU HYDRAULIC SYSTEM TROUBLESHOOTING
PARAGRAPH
DESCRIPTION
FUNCTION
PAGE
PARAGRAPH
DESCRIPTION
FUNCTION
PAGE
15-4
APU HYDRAULIC SYSTEM
15-4.1
APU HYDRAULIC SYSTEM COMPONENTS
15-4.2
OVERALL APU HYDRAULIC SYSTEM BLOCK
DIAGRAM
15-4.3
MAJOR INTERCONNECTING APU HYDRAULIC
SYSTEM SCHEMATIC
15-4.4
CHARGING ACCUMULATOR FLOW DIAGRAM
15-4.5
APU HYDRAULIC START MOTOR FLOW
DIAGRAM
15-65
15-4.9
DRAWING
15-68
15-4.10
DRAWING
15-69
15-4.11
DRAWING
15-70
15-4.12
DRAWING
15-72
15-4.13
DRAWING
15-73
15-4.6
APU HYDRAULIC PUMP FLOW DIAGRAM
DRAWING
15-74
15-4.7
APU HYDRAULIC STARTING SYSTEM VISUAL
TASK
15-75
CHECK
15-4.8
APU HYDRAULIC STARTING SYSTEM
TASK
15-76
OPERATIONAL CHECK
APU START ACCUMULATOR GAGE DOES NOT
TASK
15-78
INDICATE AT LEAST 2850 PSI
APU DOES NOT MOTOR
TASK
15-80
APU MOTORS BUT DOES NOT START, ESU
TASK
15-82
APU PUMP FAULT LIGHT IS ON
TASK
15-84
HYDRAULIC HANDPUMP SCHEMATIC
DRAWING
15-86
Change 8
15-67
