Check The Operation Of All Exterior Lights, Horn And Control Console Indicator And Monitor Lights; Check Operation Of All Controls - Doosan DX700LC Operation And Maintenance Manual

Check the Operation of All Exterior Lights,
Horn and Control Console Indicator
and Monitor Lights
1. Turn engine starter switch to the "I" (ON) position and
observe all of the indicator lights.
2. Restore operation of any light bulbs that do not turn "ON"
at this time.
3. Sound the horn. Repair or replace if required.
4. Turn "ON" and inspect all exterior work lights. Replace any
monitors, burned out bulbs or cracked or broken housings
or lenses.
Start Engine, Check Starting Ability, and
Observe Exhaust Color at Start-up and
at Normal Operating Temperature.
Listen for Any Abnormal Sounds

Check Operation of All Controls

IMPORTANT
Cold weather operation requires that the operator fully
warm up the hydraulic oil before beginning machine
operation. Follow all warm up instructions listed in the
Operating Instruction section of this manual. Make sure to
cycle oil through all of the components, including all
cylinders, both travel motors and the swing motor. Cold
hydraulic oil in the lines and components needs to be
warmed before beginning full operation. If this is not done,
damage to the cylinders or hydraulic motors can occur.
1. With the engine at rated speed, operate all of the controls.
2. Follow cold weather
procedures.
3. Note any slow operations or unusual movements.
Determine the cause and repair the fault before operating.
Inspection, Maintenance and Adjustment
4-24
hydraulic system warm-up
OP001123