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TM 9-2320-364-20-5
18-6
18-3. BOOM WEAR PADS INSPECTION/REPLACEMENT (CONT).
NOTE
If measurement in Step (2) is
less than 1/32 in. (.8 mm),
replace wear pads.
Wear pads must be replaced in
pairs.
(2)
Measure and record distance between two
inner-mid section wear pad retainers (3) and
bottom of fly section (4). (Measurement A).
NOTE
If measurement in Step (3) is
more than 1/8 in. (3.2 mm),
replace wear pads.
Wear pads must be replaced in
pairs.
(3)
Measure and record distance lower edge of
fly section (4) has worn into sides of two
wear pads (5). (Measurement B).
(4)
Repeat Steps (2) and (3) for outer-mid
section and boom base section.
NOTE
If measurement in Step (5) is
more than 1/8 in. (3.2 mm) or
less than 1/16 in. (1.6 mm),
shims must be added or
subtracted or wear pads
replaced. Wear pad clearance
should be reinspected.
Proper shim size for each wear
pad is determined by dividing
measurement “C” by two.
Boom must be positioned tight
up against opposite wear pad
being measured.
(5)
Measure and record distance between lower
edge of fly section (4) and wear pad (5).
(Measurement C).
(6)
Repeat Step (5) for outer-mid section and
boom base section.
5
3
4
1/8 IN. MAX
(3.2 MM)
1/8 IN. MAX
(3.2 MM)
1/32 IN. MAX
(.8 MM)
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