TM 5-3805-281-24-2
UNIT PREVENTIVE MAINTENANCE CHECKS AND SERVICES
FOR HYDRAULIC EXCAVATOR 330LCR
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:
3
*As Required
Check Track Sag
(1) Swing upperstructure 90 and lower bucket to
raise track off ground.
(2) Keep the angle (A) between 90--110 and
position bucket's round side on the ground.
CAUTION: Prevent possible injury from
unexpected machine movement. Place blocks
under frame to support machine while
measuring track sag.
(3) Place blocks under machine to support
machine.
(4) Rotate track forward two full rotations and then
in reverse two full rotations.
(5) Measure the distance (A) at middle track roller
from bottom of track frame to top surface of
track shoe.
TRACK SAG SPECIFICATIONS
Normal Ground Conditions
300--335 mm
(11-13/16--13-3/16 in.)
A-4
