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 TM 9-2330-326-14&P
Table 4-1. Unit PMCS (Cont.)
ITEM
INTERVAL
ITEM TO
EQUIPMENT NOT
NO.
M
S
A
T
MI
CHECK/SERVICE
PROCEDURE
READY/
AVAILABLE IF:
CAUTION
Any bumps, valleys, or
warping of the bolster plate
will cause uneven loading of
the fifth wheel, which could
result in damage to the top
plate and poor lock life.
CAUTION
The bolster plate should not
bow upward (concave) more
than 1/16 in. (1.58 mm)
within a 19-in. (48.26-cm)
radius from kingpin.
The bolster plate should not
bow downward (convex)
more than 1/4 in. (6.35 mm)
within a 19-in. (48.26-cm)
radius from kingpin or more
than 1/8 in. (3.18 mm) at a 10-
in. (254-mm) radius from
kingpin.
2
M
S
A
T
MI
Bolster Plate
a.
Clean bolster plate and kingpin. (See
Every
?
6,000
checks are completed.
b.
Check flatness of bolster plate using
Bolster plate
a 48 in. (1.22 m) straight edge.
exceeds bowing
Check flat edge in all directions.
criteria.
4-4
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