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2-20
2
PERFORMANCE CRITERIA
SERVICE DATA
Lever Play
• Measure any discernible play at the tip of the lever (ped-
al).
Backlash
• Measurement Posture : Completely retract the arm cyl-
inder and fully extend the bucket cylinder.
• Move the tips of the bucket teeth from side to side (left
and right) and measure the play.
Slew Bearing Play
1. Unload the bucket, completely retract the arm cylinder,
fully extend the bucket cylinder, set the dozer blade
to the rear, and then adjust the boom foot pin and the
bucket pin so that they are the same height.
2. Place the dial gauge on the undersurface of the slew
bearing outer teeth located forward of the machine,
and then set the indicator to “0”.
3. Lowe the boom, raise the one side of the crawler by
around “H”, and then read the dial gauge.
Crawler Tension
• Raise the excavator completely off the ground using the
hoe attachment and dozer blade.
Then measure the distance (of droop) between the cen-
ter point on the crawler frame and top of the crawler
shoe.
Note:
For the rubber crawler, the measuring should be
performed after placing the joint portion with “M” mark
to the top center.
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...
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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...