Doosan DX60R Shop Manual page 80

The lowest part of the bucket linkage should be 0.4 - 0.5 m (1' -
4') off the ground. Raise dozer blade all the way up.
Mark off a 20 m (65' 7-1/2") test distance, with a 3 - 5 m (10' -
15') run-up area, and a 3 - 5 m (10' - 15', or longer) speed
run-off distance.
Travel the excavator back and forth to be sure steering is
centered and side frames are parallel with the test course.
Operate both travel levers at the fully engaged position and
measure the time it takes to cross 20 m (65' 7-1/2"). Compare
measured results against the standard for new machines:
Rate of Travel
1-speed
2-speed
Rotate the turntable 180°. Both tests should be repeated three
times. Average all results to obtain a final value.
3 m - 5 m
Figure 1
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 1)
A greater amount of deviation is allowed with the travel control
set for 2-speed.
Rate of Travel
1-speed
2-speed
Specification for DX60R
Page 22
Basic Valve
34.9 ± 2.0 sec
18.6 ± 1.5 sec
20 m
Max. Distance
300 mm (5.9 in)
300 mm (5.9 in)
3 m - 5 m
FG013215
SP001615