PERFORMANCE
STANDARDS
Performance Judgment Procedures
17VX3
If the user points out that "this machine lost power", "the speed of this machine dropped" or "the
cylinder's lowering amount
is
too grear', then a performance judgment
is
required.
By
so testing, a
quantitative performance level
is
obtained for each section of the machine, and the performance of the
machine
is
restored to its specified level
by
means of such treatment as the appropriate adjustment,
replacement or repair. The machine's "standard value"
in
terms of which to judge the level of the
measured data, and the "allowance value" where the machine performance
is
lowered but allowable,
have been set. When the performance level
is
measured, if the conditions have changed, a correct
judgment
is
not available. Therefore, measure it under the specified conditions. (Refer to "Performance
Measurement Instructions"
on
the next page.
1.
Measurement Location
(1) Flat and solid ground
(2) Clearing space for the attachment to swing with maximum reach.
(3) Clearing flat and solid ground where the machine can
run
10m
straight.
(4) Safety measures such as "Keep Off" should
be
in
place for the measurement (using ropes to mark
"Keep Off").
The meeting regarding work procedures and signs should
be
held
in
advance with other involved
parties.
2.
Measuring Instruments
(1
) Stop watch
(2) Scale
(3) Thermometer
(4) Inclination gauge
(5)
Pen,
notebook, chalk and felt
pen
3.
Perform the measurement under the conditions specified.
If measurement conditions change, then measured values will
in
turn change, greatly. If the specified
conditions are not followed, record the actual conditions.
(1) If the manufacturer
is
to
be
consulted because of trouble, report the measurement conditions;
in
particular, oil temperature and engine speed (max. speed without load, single pump relief, double
pump relief)
(2) The standard values are set under the condition of bucket without load (empty). However if it
is
noticed that performance
is
degraded when load
is
applied (soil
is
in
the bucket), then measure the
value
in
each case. That
is
often caused
by
lower oil temperature. Therefore, measure the relief
pressure and if it drops, adjust
it.
(3) Perform the measurement three times and base the estimate
on
the average value. If any of the
values
is
greatly different, there may have been mistaken measurement.
Re
- measure.
6 - 1 - 1
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