4-8. PMCS TABLE (CONT).
Table 4-1. Unit Maintenance Preventive Maintenance Checks and Services
Item to Be
Inspect crossmembers (1) and frame (2) for
Crossmembers or frame
cracks in welds. If cracks are found, notify
have cracks in welds.
Direct Support Maintenance.
Check drawbar mounting bolts (1), tow ring
Tow ring diameter is less
mounting plate bolts (2), tow ring (3) and tow ring
than 1-1/4 in. (32 mm) or
bracket (4) for looseness, cracked welds or damage.
circumference is less
bar and draw-
Check tow ring (3) for wear by measuring in worn
than 4-5/8 in. (117 mm).
area. If diameter is less than 1-1/4 in. (32 mm) or
Tow ring bracket bolt/
circumference is less than 4-5/8 in. (117 mm),
nuts are loose or missing.
replace tow ring prior to next mission. If any tow
ring bracket bolts/nuts are loose or missing, replace
Tow ring is loose or bent.
tow ring and
Tow ring has cracked
looseness is found in tow ring, tighten (Para 4-59
or Para 4-78). If bending or cracked weld is found
Tow ring bracket lower
bending or gouging of lower lip of tow ring bracket
lip is bent or gouged.
age or looseness is found in drawbar mounting
bolts, notify Direct Support Maintenance.