Doosan DL200, Operation And Maintenance Manual

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OP000508
3-19
Operation
BOOM LOWER KICK-OUT
(OPTION)
Placing bucket lever in "L" position will lock control lever in
lower boom position. Boom will move downward until trip
plate (1, Figure 46) makes contact with bucket lower limit
switch (2). When limit switch is tripped, boom will stop
lowering and bucket lever will automatically be returned to
"NEUTRAL" position. Trip plate can be adjusted to control
maximum height that boom can be lowered.
ADJUSTMENT OF BUCKET
POSITION SWITCH
When bucket lever is held in crowd detent position, after
bucket has been dumped, bucket will pivot toward crowd
position. Once full crowd position has been reached, bucket
lever will automatically return to "NEUTRAL" position. If
bucket is lowered after lever returns to "NEUTRAL," bucket
will automatically position itself to be in a preselected
digging position (usually flat). To adjust bucket to desired
preselected digging position, perform the following steps.
1. Operate controls to place bucket on ground and in
desired digging position (usually flat). Return bucket
lever to its "NEUTRAL" position.
2. Shut down engine.
3. Loosen bolts (1, Figure 47) on bracket (2).
4. Position bracket (2, Figure 47) so that end of arm (3)
is aligned with center of magnetic switch (4).
5. Tighten bolts (1, Figure 47).
6. Start engine. Raise boom, dump bucket, then move
bucket lever into crowd detent position. Now lower
boom and check to see that bucket has stopped at
required position. A small readjustment of bracket (2,
Figure 47) may be necessary.
FG006224
1
2
Figure 46
IMPORTANT
Trip plate must always be set to contact limit switch
before boom cylinders reach maximum extension.
Maximum extension causes pump to force fluid over
relief valve.
1
2
4
3
FG006225
Figure 47