TM 5-3805-248-10
PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS) - CONTINUED
0014 00
Table 1. Preventive Maintenance Checks and Services (PMCS) for 621B Scraper - Continued.
LOCATION
ITEM TO
CHECK/
ITEM
MAN-
NOT FULLY MISSION
SERVICE
NO.
INTERVAL
HOURS
PROCEDURE
CAPABLE IF:
b. On both sides of hitch, check
Class III hydraulic fluid
5
hydraulic steering cylinders,
leaks are evident. Any
(Con't)
hydraulic hoses, lines and fittings,
breaks are noted in air lines
air lines and hoses and electrical
and hoses or bare electrical
wires for damage or signs of leaking
wires. Loose or missing
and secure mounting.
mounting hardware is noted.
LEFT SIDE
RIGHT SIDE
394-177
Damage that would impair
c. Visually check for any obstructions
operation is evident.
between moving components of
hitch. Remove obstructions and
check for damage.
Visually check differential assembly
Class III leaks are evident.
6
Before
Drive Line
for signs of leakage.
Class III hydraulic leaks or
Draft Frame, a. Check hydraulic lines and hoses and
7
Before
any air leak is evident.
air lines along draft frame for dam-
Scraper
Loose or missing mounting
age or signs of leaking and secure
Bowl, Apron
hardware is noted.
mounting.
and Ejector
b. Check electrical wiring and connec- Wires or connectors are
tors for damage and secure mount- damaged.
ing.
Class III leaks are evident.
c. Check left and right bowl lift cylin-
Loose or missing mounting
ders, hoses, lines and fittings for
hardware is noted.
damage or signs of leaking and
secure mounting.
0014 00-4
