Excavator Performance Standards; Test Conditions; Travel Speed And Travel Motor Balance (Steering Deviation) Tests - Doosan DX140R Shop Manual

EXCAVATOR PERFORMANCE
STANDARDS
Evaluation of equipment performance and operating condition
can be made by running the excavator through a series of
different tests, and recording results with a stop watch and tape
measure.
Compare results of performance tests against the specifications
and standards that follow, which are for equipment in new or
renewed condition.

Test Conditions

1. All tests should be performed on a flat, level, firm
supporting ground surface.
2. All recommended, applicable maintenance and adjustment
service should be completed before testing.
3. Hydraulic fluid and engine oil should be of appropriate
viscosity for ambient weather conditions. Warm up
hydraulic oil to standard operating temperature, between
45°C - 55°C (112°F - 135°F).
4. Run all tests with the engine speed control set to maximum
rpm.
5. Repeat tests with Power Mode engine control settings at
both Standard Mode (standard work mode) and Power
Mode (high speed mode). Travel speed tests should also
be repeated at both high and low speed.
Travel Speed and Travel Motor Balance
(Steering Deviation) Tests
Speed Test
Prepare the excavator for travel speed tests by extending all
hydraulic cylinders - boom, arm and bucket - to the fully
extended position, shown in Figure 5.
Specification for DX140LCR
SP002379
Page 19