TM 5-3805-280-10
OPERATOR PREVENTIVE MAINTENANCE CHECKS AND SERVICES
FOR HYDRAULIC EXCAVATOR 230LCR/230LCRD
ITEM
INTERVAL
ITEM TO BE INSPECTED
EQUIPMENT IS NOT
NO.
PROCEDURE: DO THE PMCS AND HAVE ITEM
READY/AVAILABLE
REPAIRED, FILLED, OR ADJUSTED AS NEEDED
IF:
(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.
52
*As Required
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
engine speed.
(1) Squeeze dust valve (A) to remove dust from the
air cleaner.
(2) When operating in high dust/sand conditions,
squeeze dust valve every couple of hours of
operation to release dust/sand.
A-22
