TM 5-3805-280-24-2
UNIT 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:
(11) Hold down filter cover (A) against light spring
load when removing the last two cap screws.
(12) Remove spring (C), valve (E), and element (D).
(13) Remove filter case and discard element and O-
ring (F).
WARNING: Prevent possible injury from
flying chips if compressed air is more than
210 kPa (2.1 bar) (30 psi). Reduce compressed
air to less than 210 kPa (2.1 bar) (30 psi)
when using for cleaning purposes. Clean area
of bystanders, guard against flying chips, and
wear personal protection equipment including
eye protection.
NOTE: Remove element and inspect for metal
particles and debris in bottom of filter case.
Excessive amounts of brass and steel particles
can indicate a hydraulic pump, motor, or
valve malfunction, or a malfunction in
progress. A rubber type of material can
indicate cylinder-packing problem.
(14) Clean filter case with diesel fuel and dry with
compressed air.
(15) Install filter case, valve (E), and spring (C) in
reservoir.
(16) Install filter cover (A) and tighten cap screws
(B).
FILTER COVER SPECIFICATIONS
49 Nm (36 lb-ft)
Cap Screws, Cover
A-19