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:
CAUTION
76
Monthly
All Systems
Machine
Do NOT perform this PMCS exercise when temperature is
Exercise
below 0F (-18C).
NOTE
Do NOT exercise machine if it has been operated within the
past month.
a. Perform Before operation PMCS.
b. Start engine and run at idle for five
minutes.
c. While machine is warming up, per-
Class III oil or hydraulic
form a walkaround inspection,
leaks are evident. Any fuel
checking for evidence of leaks.
or coolant leaks are evident.
NOTE
If temperature is below 32F (0C), operate controls prior to
moving machine.
d. After machine has idled for five
minutes, begin to operate ALL con-
trols slowly:
(1) Transmission in all ranges
including reverse
(2) Differential lock engaged and
disengaged
(3) Transmission hold engaged and
disengaged
(4) Parking and service brakes
applied and released
(5) Steering from full left to full
right
(6) All scraper hydraulic controls
(bowl, ejector and apron cir-
cuits)
0014 00-46
