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4-140
4
CYLINDERS
DISASSEMBLY AND ASSEMBLY
4. Install the piston on the piston rod.
<Arm cylinder>
a. Install the cushion seal (8).
b. First, push the cushion bearing (6) in all the way.
Then, install the stopper (7) and pull the cushion
bearing back again.
c. Install the snap ring (5).
<Swing cylinder>
a. Install the cushion bearing (6).
b. Install the washer.
c. Install the screw (5).
Screw: 41.2 N·m
<Bucket cylinder, blade cylinder>
a. Install the piston packing holder (4).
b. Fit the O-ring (3) to the piston (2) and install it.
Piston: See the table below.
c. Tighten the setscrew (1).
Piston, setscrew
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Cylinders
Piston
(N·m)
Set screw
(N·m)
Boom
2020
31.5
Arm
1530
16.2
Bucket
824
––
Blade
1638
––
Swing
1265
16.7
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...
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Page 73: ...2 60 2 WIRE HARNESS WIRING DIAGRAM SERVICE DATA NAME STANDARD NO...
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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...