TM 5-5420-278-24&P
0018 00
0018 00-10
Table 1. Unit Preventive Maintenance Checks and Services for Ramp Bay (Contd).
ITEM TO
ITEM
CHECK/
EQUIPMENT NOT
NO.
INTERVAL
SERVICE
PROCEDURE
READY/AVAILABLE IF:
2
15
Semi-
Lower lock-
annually
drive
assembly (1),
cylinder, and
yoke
a. Inspect jackscrew threads for cracks,
burrs, nicks, and deformation.
b. Inspect trunnions and pin for cracks.
c. Inspect bumpers and support brackets
for cracks, broken welds, and deformation.
d. Inspect cylinders for leaks.
e. Inspect hoses and fittings for cracks,
compression, and leakage.
f. Ensure cylinder functions properly in
conjunction with hand pump.
g. Inspect for cracks, deformation, and
elongation of eye.
a. Jackscrew will
not extend or
retract pin properly.
b. Cracks or broken
welds noted.
c. Cracks, broken
welds, or
deformation noted.
d. Any Class III
fluid leak noted.
e. Any Class III
fluid leak noted.
f. Cylinder does not
function properly.
g. Cracks noted or
deformation
prevents proper
operation. Hole
elongation greater
than 50% of hole
diameter noted.
16
Semi-
Right front
annually
outer ponton
end skin
surface (2)
a. Inspect surface area for punctures,
holes, tears, seam ruptures, cracks, and
broken welds.
b. Inspect seams for cracked or broken
welds.
a. Damage which
cumulatively adds
up to a hole
approximately
.26 in. (.66 cm) in
diameter (the size of
a typical pen or
pencil).
b. Cracked or
broken welds noted.
1
