OPERATOR 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
(2) Open drain valve (A) and press pump (B) to
extract water. Collect waste in a container and
dispose of properly.
(3) Close drain valve (A).
NOTE: Ensure that access door is closed
securely after inspection is complete.
Clean Air Cleaner Unloader Valve
NOTE: A missing, damaged, or hardened
dust unloader valve will make the dust cup
precleaner ineffective, causing very short air
filter life. Valve should suck closed above 1/3
(1) Squeeze dust valve (A) to remove dust from the
(2) When operating in high dust/sand conditions,
squeeze dust valve every couple of hours of
operation to release dust/sand.