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TM 5-2420-222-34
CHAPTER 14
HYDRAULIC SYSTEM MAINTENANCE
Paragraph
Page
Number
Paragraph Title
Number
14-1
Hydraulic System Test .....................................................................................................
14-2
14-2
Accumulator Assembly Maintenance ...............................................................................
14-7
14-3
Hydraulic Pump Assembly Maintenance..........................................................................
14-13
14-4
Hydraulic Pump Drive Shaft and Coupler Maintenance
(Serial Numbers 235786-235999) ....................................................................................
14-26
14-5
Hydraulic Pump Drive Shaft and Coupler Maintenance
(Serial Numbers 319995-342573) ....................................................................................
14-29
14-6
Hydraulic Pump Stroke Control Valve Repair ..................................................................
14-32
14-7
Hydraulic Pump Stroke Control Valve Solenoid Replacement.........................................
14-38
14-8
Jaw Control Valve Assembly Repair ................................................................................
14-40
14-9
Backhoe Control Valve Assembly Repair.........................................................................
14-45
14-10
Backhoe Stabilizer and Bucket Valves Repair .................................................................
14-50
14-11
Backhoe Crowd Valve Repair ..........................................................................................
14-56
14-12
Backhoe Boom and Swing Valves Repair........................................................................
14-60
14-13
Backhoe Relief Valves Maintenance................................................................................
14-66
14-14
Loader Control Valve Assembly Repair ...........................................................................
14-72
14-15
Loader Boom and Bucket Valves Repair .........................................................................
14-74
14-16
Loader Bucket Relief Valves Maintenance.......................................................................
14-80
14-17
Hydraulic Hoses, Lines, and Fittings Repair ....................................................................
14-84
14-18
Jaw Cylinder Assembly Repair.........................................................................................
14-84
14-19
Backhoe Crowd Cylinder Assembly Repair......................................................................
14-88
14-20
Backhoe Boom Cylinder Assembly Repair.......................................................................
14-94
14-21
Backhoe Bucket Cylinder Assembly Repair .....................................................................
14-99
14-22
Backhoe Swing Cylinder Assemblies Repair ...................................................................
14-106
14-23
Backhoe Stabilizer Cylinder Assemblies Repair ..............................................................
14-111
14-24
Loader Bucket Cylinder Assemblies Repair .....................................................................
14-116
14-25
Loader Boom Cylinder Assemblies Repair.......................................................................
14-120
14-1
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