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:
a. Check air tanks, lines and valves
Damage that would impair
38
After
Front Air
under left side of tractor for dam-
operation is evident.
System
aged or missing parts.
Tanks
WARNING
Wear suitable eye protection and keep face and eyes away
from exhausting air tank drain valves. Failure to do so may
cause injury.
b. Open drain valve on each air tank to
drain all moisture and sediment.
Check for oil in draining air. If oil is
noted, notify Unit Maintenance.
Close drain valves when all air and
moisture have vented.
FRONT AIR TANKS
394-172
FRONT DRAIN VALVES
0014 00-20