Komatsu D51EX-24, Operation & Maintenance Manual

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• FORWARD/REVERSE (E) is displayed in the speed range
display section.
FORWARD/REVERSE (E)
“F”: FORWARD
“R”: REVERSE
“N”: NEUTRAL
“P”: Parking brake is being applied
• Upper bar graph (G) lights up in accordance with set travel
speed in forward.
• Lower bar graph (H) lights up in accordance with set travel speed in reverse.
• When the starting switch is turned from OFF to ON position, the speed range is set to 1st speed.
• When switching from variable shift mode to quick shift mode, the speed range becomes nearest one among
1st, 2nd, and 3rd.
• For the lighting up of bar graph (G) and (H) and set travel speed, see the following table.
Bar
graph
Speed
range
Set travel speed
( km/h)
Bar
graph
Speed
range
Set travel speed
( km/h)
Bar
graph
Speed
range
Set travel speed
( km/h)
1
2
- 0.8
15
16
- 3.8
27
28
- 6.1
3
4
- 1.0
17
18
- 4.1
29
30
- 6.6
5
6
- 1.5
19
20
- 4.5
31
32
- 7.1
7
8
- 2.0
21
22
- 4.9
33
34
- 7.5
9
10
- 2.4
23
24
- 5.2
35
36
- 8.0
11
12
- 2.9
25
26
2nd 5.6
37
38
- 8.5
13
14
1st 3.4 - - -
39
40
3rd 9.0
REVERSE TRAVEL SPEED SETTINGS
Reverse travel speed can be set by selecting the ratio of reverse travel speed against forward travel speed out
of the following 5 levels.
“-1”: Approximately 20 % slower than forward travel speed.
“0”: Same as forward travel speed.
“+1”: Approximately 20 % faster than forward travel speed.
“+2”: Approximately 40 % faster than forward travel speed.
“+3”: Approximately 60 % faster than forward travel speed.
By setting the travel speed according to the operation in advance, gear shifting is not necessary when operating
the joystick (steering, directional and gear shift lever).
To improve efficiency in dozing operation, increase the reverse travel speed.
When traveling in reverse on the rough ground or dozing uphill, decrease the reverse travel speed.
MACHINE OPERATIONS AND CONTROLS OPERATION
3-166