UNIT PREVENTIVE MAINTENANCE CHECKS AND SERVICES
FOR HYDRAULIC EXCAVATOR 230LCR/230LCRD
ITEM TO BE INSPECTED
EQUIPMENT IS NOT
PROCEDURE: DO THE PMCS AND HAVE ITEM
REPAIRED, FILLED, OR ADJUSTED AS NEEDED
(20) Add oil until it is between marks on sight glass
CAUTION: If the hydraulic pump is not filled
with oil, it will be damaged when the engine is
(21) Remove air bleed plugs (C) from hydraulic
pump until oil flows from bleed lines.
(22) Install air bleed plugs in hydraulic pump.
(23) Install cap.
Tube is clogged
Clean the engine ventilation tube (A) when you
measure and adjust engine valve clearance (lash).