Takeuchi TB 250 - Lever Play; Backlash; Slew Bearing Play; Crawler Tension

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.