Swing Speed And Deceleration Force Test - Doosan DX140R Shop Manual

Travel Deviation
To check steering deviation (travel motor balance), use a long
tape or rope, or the edge of an undeviating straight road curb or
other marker to verify side to side travel motor uniformity.
Deviation distance should always be measured at the 20 m (65'
7-1/2") "finish line." Repeat the test in reverse to measure in
both directions, with starting point becoming the finish line, and
vice versa. (Figure 6)
A greater amount of deviation is allowed with the travel control
set for high speed.
Rate of Travel
High Speed
Low Speed

Swing Speed and Deceleration Force Test

Swing Speed Test
Figure 7
Extend the bucket cylinder completely and retract the arm
cylinder, as shown in Figure 7, to test swing speed. The lowest
point of the bucket will be approximately 1.5 m (3') off the
ground.
Use paint marks at the same point on the turntable and
undercarriage, or select alternate measuring locations and use a
stopwatch to time 3 full 360° rotations. The time required for 3
revolutions should be between 16 and 19 seconds in Standard
Mode, 15 and 18 seconds in Power Mode.
Specification for DX140LCR
Max. Distance
150 mm (6 in)
150 mm (6 in)
1.5M
FG000468
SP002379
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