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
ITEM
MAN-
NOT FULLY MISSION
CHECK/
SERVICE
NO.
INTERVAL
HOURS
PROCEDURE
CAPABLE IF:
NOTE
73
Monthly
Cutting Edge
and Router
If scraper bowl cutting edge or side router bits are worn or
Bits
damaged, or if cutting edge configuration needs to be changed
in order to accomplish the next scheduled mission, notify Unit
Maintenance.
Obtain appropriate measuring device from Unit Maintenance,
to measure cutting edge wear in step a and router bit wear in
step b.
a. Inspect cutting edge for excessive
Wear exceeding 3/4 in. (19
wear, cracks, breaks, and loose or
mm), damage or looseness
missing mounting hardware. If
is evident.
worn more than 3/4 in. (19 mm), or
if damage or loose mounting hard-
ware is noted, notify Unit Mainte-
nance to rotate or replace cutting
edge or tighten mounting hardware.
b. Inspect router bit on each side of
Measurement is less than
scraper bowl for cracks, breaks,
1.5 in. (38 mm). Damage or
loose or missing mounting hard-
looseness is evident.
ware, and excessive wear. Measure-
ment between bottom of bowl and
tip of router bit must be at least 1.5
in. (38 mm). If damage or loose
mounting hardware is noted, or if
worn beyond limit, notify Unit
Maintenance to rotate or replace
component or tighten mounting
hardware.
Unlatch and open windshield to
74
Monthly
Cab Wind-
ensure it operates freely. Close and
shield
latch.
Latches
0014 00-44
