![background image](http://html2.mh-extra.com/html/takeuchi/tb-250/tb-250_workshop-manual_3331249027.webp)
2-15
2
PERFORMANCE CRITERIA
SERVICE DATA
Hydraulic oil pressure (Slewing relief valve set pressure)
Measuring method
• Engine:
Maximum R. P. M.
• Hydraulic oil temp.: 50~60°C
• Mount the pressure gauge on the pressure detection
port and set a solid obstacle so that the upperstructure
cannot slew in the direction to be measured. Next, op-
erate the circuit to be measured and measure the relief
pressure.
Adjusting method
It is not possible to adjust the set pressure with the relief
valve on the slew motor. If adjustment is required, replace
the relief valve assembly.
Hydraulic oil pressure (Pilot pressure)
Measuring method
• Engine:
Maximum R. P. M.
• Hydraulic oil temp.: 50~60˚C
• Mount pressure gauge on the pressure detection port
and measure the pilot relief pressure.
Adjusting Method
1. Loosen the locknut (2), and turn the setscrew (1) to
adjust the set pressure.
• To increase the set pressure, turn the setscrew
clockwise.
• To decrease the set pressure, turn the setscrew
counterclockwise.
2. Upon completion of the adjustment, tighten the lock
nut (2) by holding the setscrew (1) to prevent it from
turning.
3. Operate the relief valve again to confirm that the newly
set pressure is stabilized.
Circuit
Relief valve
Pressure detection port
Port location
Size
Right slew
R1
P3
G1/4
Left slew
R2
��
��
�������
Relief valve
Pressure detection port
Port location
Size
R4
P4
G1/4
�������
��
��
��
2DAH041Z
1
2
P4
R4
Summary of Contents for TB 250
Page 1: ......
Page 3: ...1 1 SAFETY 1 Safety alert symbol 1 2 Safety precautions 1 3 Cautions when working 1 9...
Page 36: ...2 24 2 TIGHTENING TORQUE SERVICE DATA...
Page 38: ...2 26 2 HYDRAULIC CIRCUIT DIAGRAM SERVICE DATA Equipped with options 2 2...
Page 39: ...2 27 2 HYDRAULIC CIRCUIT DIAGRAM SERVICE DATA Equipped with angle blade and blade oat 1 2...
Page 40: ...2 28 2 HYDRAULIC CIRCUIT DIAGRAM SERVICE DATA Equipped with angle blade and blade oat 2 2...
Page 41: ...2 29 2 HYDRAULIC CIRCUIT DIAGRAM SERVICE DATA Equipped with high ow option 1 2...
Page 42: ...2 30 2 HYDRAULIC CIRCUIT DIAGRAM SERVICE DATA Equipped with high ow option 2 2...
Page 49: ......
Page 59: ...2 46 2 WIRE HARNESS WIRING DIAGRAM SERVICE DATA...
Page 60: ...2 47 2 WIRE HARNESS WIRING DIAGRAM SERVICE DATA...
Page 61: ...2 48 2 WIRE HARNESS WIRING DIAGRAM SERVICE DATA...
Page 62: ...2 49 2 WIRE HARNESS WIRING DIAGRAM SERVICE DATA...
Page 63: ...2 50 2 WIRE HARNESS WIRING DIAGRAM SERVICE DATA...
Page 64: ...2 51 2 WIRE HARNESS WIRING DIAGRAM SERVICE DATA...
Page 65: ...2 52 2 WIRE HARNESS WIRING DIAGRAM SERVICE DATA...
Page 66: ...2 53 2 WIRE HARNESS WIRING DIAGRAM SERVICE DATA...
Page 67: ...2 54 2 WIRE HARNESS WIRING DIAGRAM SERVICE DATA...
Page 68: ...2 55 2 WIRE HARNESS WIRING DIAGRAM SERVICE DATA...
Page 69: ...2 56 2 WIRE HARNESS WIRING DIAGRAM SERVICE DATA...
Page 70: ...2 57 2 WIRE HARNESS WIRING DIAGRAM SERVICE DATA...
Page 71: ...2 58 2 WIRE HARNESS WIRING DIAGRAM SERVICE DATA...
Page 72: ...2 59 2 WIRE HARNESS WIRING DIAGRAM SERVICE DATA...
Page 73: ...2 60 2 WIRE HARNESS WIRING DIAGRAM SERVICE DATA NAME STANDARD NO...
Page 74: ...2 61 2 WIRE HARNESS WIRING DIAGRAM SERVICE DATA...
Page 75: ...2 62 2 WIRE HARNESS WIRING DIAGRAM SERVICE DATA...
Page 76: ...2 63 2 WIRE HARNESS WIRING DIAGRAM SERVICE DATA...
Page 77: ...2 64 2 WIRE HARNESS WIRING DIAGRAM SERVICE DATA...
Page 78: ...2 65 2 WIRE HARNESS WIRING DIAGRAM SERVICE DATA...
Page 79: ...2 66 2 WIRE HARNESS WIRING DIAGRAM SERVICE DATA...
Page 80: ...2 67 2 WIRE HARNESS WIRING DIAGRAM SERVICE DATA...
Page 81: ...2 68 2 WIRE HARNESS WIRING DIAGRAM SERVICE DATA...
Page 92: ...3 11 3 CONTROL VALVE FUNCTION...
Page 108: ...4 3 4 SERVICE STANDARDS DISASSEMBLY AND ASSEMBLY Clearance for pin and bushing...
Page 352: ...ENGINE 6 Machine model Mounted engine TB250 4TNV88...