SECTION 8
HYDRAULICS
8A Repair, Service Tools, and Materials .............................................................................................................. 1
Materials Required ................................................................................................................................... 1
8B Failure Analysis .............................................................................................................................................. 3
General .................................................................................................................................................... 3
8C General Instructions........................................................................................................................................ 5
General .................................................................................................................................................... 5
Hydraulic Tube and Hose Fittings ............................................................................................................ 5
37° Flare Fittings ...................................................................................................................................... 6
Hose Installation Instructions ................................................................................................................... 6
ORS (Face Seal) Fittings ......................................................................................................................... 7
8D Hydrostatic Traction Pump.............................................................................................................................. 9
General ................................................................................................................................................... 9
Removal ..................................................................................................................................................11
Disassembly............................................................................................................................................11
Inspection............................................................................................................................................... 14
Assembly................................................................................................................................................ 15
Installation .............................................................................................................................................. 18
8E Front Traction Motor ..................................................................................................................................... 19
General ................................................................................................................................................. 19
Removal ................................................................................................................................................. 19
Repair..................................................................................................................................................... 19
Installation .............................................................................................................................................. 22
8F Rear (4 Wheel Drive) Traction Motor ............................................................................................................ 23
General .................................................................................................................................................. 23
Removal ................................................................................................................................................. 23
Repair..................................................................................................................................................... 23
Installation .............................................................................................................................................. 26
8G 4 Wheel Drive Control Valve......................................................................................................................... 27
General .................................................................................................................................................. 27
Removal ................................................................................................................................................. 27
Repair..................................................................................................................................................... 27
Installation .............................................................................................................................................. 27
8H Reel (Auxiliary) Hydraulic Pump ................................................................................................................... 29
General .................................................................................................................................................. 29
Removal ................................................................................................................................................. 29
Disassembly........................................................................................................................................... 30
Inspection............................................................................................................................................... 31
Reassembly ........................................................................................................................................... 31
Installation .............................................................................................................................................. 31
8I Lift/Lower Valve ............................................................................................................................................ 33
General ................................................................................................................................................. 33
Removal ................................................................................................................................................. 33
Installation .............................................................................................................................................. 33
8J Lift Cylinders ................................................................................................................................................. 35
General .................................................................................................................................................. 35
Removal ................................................................................................................................................. 35
Inspection............................................................................................................................................... 35
Disassembly........................................................................................................................................... 35
Assembly................................................................................................................................................ 36
8