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TM 10-3930-659-20
CHAPTER 17
HYDRAULIC SYSTEM MAINTENANCE
Paragraph
Page
Number
Paragraph Title
Number
17-1
Main Hydraulic Pump Flow Test ..........................................................................
17-2
17-2
Fork/Brake Hydraulic Pump Flow Test.................................................................
17-6
17-3
Fork/Brake Hydraulic Pump Standby Pressure Test.............................................
17-10
17-4
Hydraulic Cylinder Drift/Leakage Tests ................................................................
17-13
17-5
Fork/Brake Hydraulic Pump Replacement ...........................................................
17-16
17-6
Main Hydraulic Pump Replacement.....................................................................
17-19
17-7
Forklift Control Valve Levers Replacement..........................................................
17-21
17-8
Forklift Control Valve Replacement .....................................................................
17-26
17-9
Carriage Tilt Cylinder Replacement .....................................................................
17-30
17-10
Locking Control Valve Replacement ....................................................................
17-33
17-11
Carriage Assembly Replacement.........................................................................
17-34
17-12
Forks Replacement..............................................................................................
17-39
17-13
Conveyorized Fork Attachments Maintenance .....................................................
1745
17-14
Fork/Brake Hydraulic Pump Outlet-to-Forklift Control Valve Hose Replacement.. 17-52
17-15
Fork/Brake Hydraulic Pump Drain-to-Hydraulic Reservoir Hose Replacement .....
17-54
17-16
Main Hydraulic Pump-to-Fork/Brake Hydraulic Pump Hose Replacement............
17-56
17-17
Fork/Brake Hydraulic Pump-to-Hydraulic Reservoir Hose Replacement...............
17-58
17-18
Hydraulic Reservoir-to-Main Hydraulic Pump Line Replacement .........................
17-60
17-19
Forklift Control Valve-to-Plate Hoses Replacement .............................................
17-62
17-20
Forklift Control Valve-to-Transmission Clutch Cutoff Valve Hose Replacement ...
17-64
17-21
Transmission Clutch Cutoff Valve-to-Transmission Control Valve
Hose Replacement ..............................................................................................
17-66
17-22
Transmission Clutch Cutoff Valve-to-Hydraulic Reservoir Hose Replacement .....
17-68
17-23
Carriage Tilt Cylinder Hoses and Lines Replacement...........................................
17-70
17-24
Carriage Tilt Cylinder Lubrication Hose Replacement ..........................................
17-76
17-25 Fork/Boom Cylinder Hoses and Lines Replacement.............................................
17-78
17-26
Fork Spacing Cylinder Hoses and Lines Replacement .........................................
17-82
17-27
Plate-to-Loader Frame Bracket Hoses Replacement............................................
17-86
17-28
Hydraulic Oil Sampling Valve Replacement.........................................................
17-88
17-29
Hydraulic Reservoir Suction Filter Replacement ..................................................
17-90
17-30
Hydraulic Reservoir Breather Filter Replacement ................................................
17-92
17-31
Hydraulic Oil Return Filter Assembly Replacement..............................................
17-93
17-32
Fork/Boom Cylinder Replacement .......................................................................
17-96
17-33
Fork Spacing Cylinder Replacement....................................................................
17-100
17-34
Fork Spacing Chains Replacement......................................................................
17-102
17-35
Hydraulic Reservoir Filler Cap and Cover Replacement ......................................
17-106
17-36
Hydraulic Reservoir Replacement........................................................................
17-108
17-37
Hydraulic Reservoir-to-Oil Return Filter Line Replacement ..................................
17-114
17-38
Hydraulic Oil Return Filter-to-Priority Valve Line Replacement ............................
17-116
17-39
Hydraulic Reservoir Drain Valve and Line Replacement ......................................
17-118
17-40
Hydraulic Schematic............................................................................................
17-120
17-1
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