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4-23
4
UPPER FRAME
DISASSEMBLY AND ASSEMBLY
1. Remove the hoe attachment.
“Removing the hoe attachment”
2. Remove the canopy or the cab.
3. Remove the covers.
“Removing the covers”
4. Disconnect the hydraulic hoses from the swivel joint.
5. Remove the fixing bolts and then the stopper.
“Removing the swivel joint”
Bolt: 102 N·m
6. Disconnect the grease pipe (3) from the slew bearing.
7. Remove the fixing bolts from the outer race of the slew
bearing, leaving only two bolts each on the front and
the rear of the machine.
• When installing the slew bearing, be careful to align
it with the positions of the grease hole and reamer
bolts.
“Removing the slew bearing”
Bolt: ThreeBond #1324
Bolt: 102 N·m
8. Suspend the upper frame temporarily and remove the
remaining fixing bolts while keeping the frame well bal-
anced.
9. Suspend the upper frame and remove it.
Installing the upper frame
For installation of the upper frame, follow the same proce-
dure as for removal in the reverse order.
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...