Madill 123 SWING YARDER, Руководство пользователя

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123 YARDER AND 087 (B7) TRACKED CARRIER
HYDRAULIC SYSTEM DESCRIPTION AND OPERATION
PDF VERSION COMPILED JUNE 2003
NOTE: TRACK DRIVE (FINAL DRIVE) AND MOTORS
MOST UNITS WERE FITTED WITH O&K F110 GEARBOXES AND REXROTH A6VE107HZ
MOTORS. THESE MOTORS REMAIN AT MAXIMUM DISPLACEMENT UNTIL SHIFTED BY A
PILOT PRESSURE SIGNAL AT PORT “X”. LATER UNITS WERE FITTED WITH L&S GFT100
GEARBOXES AND REXROTH A6VE160HA1 MOTORS (AS DESCRIBED IN THE TEXT).
THESE MOTORS REMAIN AT MINIMUM DISPLACEMENT UNTIL LOAD-INDUCED
PRESSURE BECOMES HIGH ENOUGH TO SHIFT THE MOTOR TO MAXIMUM
DISPLACEMENT AUTOMATICALLY, OR UNTIL THE SHIFT TO MAXIMUM DISPLACEMENT IS
TRIGGERED BY PILOT PRESSURE AT PORT “X”.