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IV-87
HYDRAULIC UNITS
SELF-LEVEL VALVE
At Lowering of the Arm
<Arm Spool In, Bucket Spool Neutral>
Oil ejected from port B opens up plunger (8) and
flows out from port A to go into the rod side of arm
cylinder (1). The oil flowing out from the head side
returns to the tank.
At Bucket Tilt (Forward)
<Bucket Spool Out, Arm Spool Neutral>
The oil in the head side of bucket cylinder (4) first
tries to flow out from port D, but it is blocked by
plunger (9), and instead all oil from the pump flows
into the head side of bucket cylinder (4). The oil
flowing out from the rod side returns to the tank.
At Bucket Tilt (Rear)
<Bucket Spool In, Arm Spool Neutral>
The oil in the rod side of bucket cylinder (4) first
tries to flow out from port C, but it is blocked by
unloading spool (5), and instead all oil from the
pump flows into the rod side of bucket cylinder (4).
The oil flowing out from the head side returns to the
tank.
The following is an explanation of the procedure to
be followed when disassembling the self-leveling
valve. Assembly should be performed following the
same procedure in reverse.
Summary of Contents for TL150
Page 1: ...TL150 Track Loader BOOK No CT7E901 WORKSHOP MANUAL Serial No 21500004...
Page 4: ...0 4...
Page 5: ...I 1 I GENERAL...
Page 18: ...I 14 GENERAL...
Page 19: ...II 1 II SPECIFICATIONS...
Page 44: ...III 1 III MACHINE CONFIGURATION...
Page 94: ...III 51 MACHINE CONFIGURATION ELECTRICAL SYSTEM ELECTRICAL SYSTEM ELECTRICAL WIRING DIAGRAM...
Page 122: ...III 79...
Page 146: ...MACHINE CONFIGURATION III 103...
Page 147: ...IV 1 IV HYDRAULIC UNITS...
Page 152: ...IV 6 HYDRAULIC UNITS HST PUMP 1 Plug 2 Plug 3 Plug 4 Screw 5 Seal Nut 6 Plug Pump Assembly 4 4...
Page 189: ...IV 43 HYDRAULIC UNITS GEAR PUMP INSPECTION AND ADJUSTMENT IV 36 38 TROUBLESHOOTING IV 39...
Page 230: ...IV 84 HYDRAULIC UNITS PILOT VALVE INSPECTION AND ADJUSTMENT IV 79 TROUBLESHOOTING IV 80...
Page 261: ...IV 115 HYDRAULIC UNITS TRAVEL MOTOR DISASSEMBLY AND ASSEMBLY Special tools...
Page 263: ...IV 117 HYDRAULIC UNITS TRAVEL MOTOR...
Page 282: ...IV 136 HYDRAULIC UNITS TRAVEL MOTOR...
Page 283: ...V 1 V TROUBLESHOOTING...