1. STRUCTURE
XAtr XBtr (XAo) (XBo) XAk XBk XAb1 XBb1 XAa2 XBa2 XAtL XBtL XAs XBs XAa1 XBa1 PH Dr1
Px Py Pz PG Dr2 Dr3 Dr6 Dr7 Pns PaL PbL XAb2 Psp XBp1 (XBp2) Pc1 Pc2 PCk Pis N1 N2 PnA2 Pss Pp
Atr Btr (Ao) (Bo) Ak Bk Ab Bb AtL BtL As Bs Aa Ba P1 P2
R1
Port name
Make up port for swing
Travel right (reverse) pilot port Travel right (forward) pilot port Optional pilot port Optional pilot port Bucket in pilot port Bucket out pilot port Boom up pilot port Boom down pilot port Arm out confluence pilot port Arm in confluence pilot port Travel left (reverse) pilot port Travel left (forward) pilot port Swing left pilot port Swing right pilot port Arm out pilot port Arm in pilot port Pilot pressure port Drain port
Pressure port for attachment Pressure port for travel Main relief pilot pressure port Pilot pressure port Drain port Drain port Drain port Drain port Swing logic valve pilot port Lock valve pilot port (arm rod side) Lock valve pilot port (boom head side) Boom up confluence pilot port Swing priority pilot port Bypass cut spool pilot port (P1 side) Bypass cut spool pilot port (P2 side) Posi-nega pressure port (P1 side) Posi-nega pressure port (P2 side) Bucket in stroke limiter pilot port Arm regeneration cut pilot port Arm1 Nega-con pressure port Boom1 Nega-con pressure port Arm2 logic valve pilot port Arm in or swing pilot signal Swing pilot signal
Travel motor right side (reverse) port Travel motor right side (forward) port Optional port Optional port Bucket cylinder head side port Bucket cylinder rod side port Boom cylinder head side port Boom cylinder rod side port Travel motor left side (reverse) port Travel motor left side (forward) port Swing motor left port Swing motor right port Arm cylinder rod side port Arm cylinder head side port Pump port (P1 side) Pump port (P2 side)
Return port
Port size
PF 1
PF 3/8
PF 1/4
M10
M12
Tightening torque
20~25kgfÃm (115~180lbfÃft)
7~8kgfÃm (50.6~57.8lbfÃft)
3.5~3.9kgfÃm (25.3~28.2lbfÃft)
5~6.6kgfÃm (36.1~47.7lbfÃft)
8.5~11.2kgfÃm
101 102 151 152 153 154 155 156 158 159 161 162 163 164 165 166 167 168 201 202 203 204 205 206 207 209 210 211 250 251 252 254 256 257 258 259 261 262 264 273 274 301 302 303 304 305 306
P2 housing P1 housing Plug Plug Plug Plug Plug Orifice Plug Plug O-ring O-ring O-ring O-ring O-ring O-ring O-ring O-ring Cover Cover Cover Cover Cover Cover Cover sub assy Flange Plate Piston Logic control valve assy Logic control valve assy Lock valve selector sub assy Swing Logic poppet assy Arm 2 Logic poppet assy Arm regeneration cut sub assy Plug Plug O-ring O-ring Square ring Socket screw Socket screw Travel spool Arm 1 spool sub assy Boom 1 spool sub assy Bucket spool Swing spool Arm 2 spool
307 308 309 310 311 313 320 321 322 323 326 327 329 331 332 333 335 336 337 338 339 370 371 511 512 513 514 521 522 523 541 542 543 550 551 552 553 561 562 601 602 603 611 971 975 977 978
Boom 2 spool Straight travel spool sub assy Spool (option) Bypass cut spool Swing priority spool Bypass cut spool Spring Spring Spring Spring Spring Spring Spring Spring seat Spring seat Bolt Stopper Bolt Stopper Stopper Stopper Spring Spring Poppet Poppet Poppet Poppet Spring Spring Spring Steel ball Spring seat Spring Plug Plug Plug Plug O-ring O-ring Main relief valve assy Port relief valve assy Port relief valve assy Posi-nega conversion valve assy Screw Socket bolt Name plate Pin