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 tank, lines and valves
Damage that would impair
48
After
Rear Air
operation is evident.
under rear of scraper for damaged
System Tank
or missing parts.
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 the air tank to
drain all moisture and sediment.
Check for oil in draining air. If oil is
noted, notify Unit Maintenance.
Close drain valve when all air and
moisture has vented.
REAR AIR TANK
REAR DRAIN
VALVE (HIDDEN)
394-173
a. Visually check tire for cuts or
Tire has cuts or bulges in
49
After
Right Rear
Wheel and
bulges in tread or sidewall area.
tread or sidewall area or
Tire
Check for uneven wear or underin-
other damage that would
flation. Look for other foreign mate-
impair operation.
rial embedded in tread or sidewall
area. Remove foreign material if
found.
b. Check for loose or missing wheel
Missing wheel hub cap bolts
hub cap bolts and valve stem with
or damaged valve stem are
cap.
noted.
0014 00-26
