4-1
DISASSEMBLY AND ASSEMBLY
4
Service standards ........................................................ 4-2
Drive system ................................................................ 4-5
T
ravel system ............................................................. 4-14
Slew system .............................................................. 4-19
Upper frame .............................................................. 4-22
Contr
ol system .......................................................... 4-28
Attachments .............................................................. 4-39
Hydraulic tank ........................................................... 4-45
Hydraulic pump ......................................................... 4-50
Contr
ol valve .............................................................. 4-74
Pilot valve .................................................................. 4-86
Pr
oportional control solenoid valve ............................. 4-93
Pilot valve (auxiliary) ................................................... 4-95
Pilot valve (travel) ..................................................... 4-106
Solenoid valve (1-section) ........................................ 4-121
Solenoid valve (2-section) ........................................ 4-124
Cylinders ................................................................. 4-127
T
ravel motor ............................................................ 4-144
Slew motor .............................................................. 4-159
Swivel joint .............................................................. 4-178
Air conditioner ......................................................... 4-183
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